"The Eliacube is the acme of Eliatrope magic. Grougaloragran doesn't know all its secrets, but he knows that its main power is to increase the magical strength of the one using it, up to make him the equal of a god."What's crystalline, covered in ancient glowing runes, looks great when set in a necklace or staff, and is worthless to a Muggle (save as a paperweight)? Give up? It's this trope! The Amplifier Artifact is one of the more useful, practical and powerful accouterments in Fantasy and Speculative Fiction. It doesn't grant new super powers like a Ring of Power, Super Serum, Amulet of Concentrated Awesome or other form of Applied Phlebotinum, what it does is give the owner or wearer (this distinction is not a light one) a small or titanic boost to whatever powers they already possess, at times even activating latent ones. Likely candidates for Amplifier Artifact are ancient swords, pendants, jewels, sets of armor, staves, petrified body parts and rings among others. It's not unheard of for disembodied organs and appendages to become Amplifier Artifacts if part of the owner's power is sealed inside it. You can also expect these to be weak spots in One Winged Angels and thus exceedingly evil Artifacts of Doom. It doesn't help that for some reason prophecies love to wax apocalyptic about how once Dark Lord Zerogeddon gets The Eye of Sorrow, his full powers will be restored and he will be unstoppable. Not entirely unrelated is the tendency of heroes to eschew these, somehow equating ancient relics of forgotten power with Hard Work Hardly Works. Still, a respectable amount of heroes will rely on the Sword of Plot Advancement to complete their quest. Regardless of being a hero or villain, you can count on them losing the artifact when it comes time for the final showdown. Compare Upgrade Artifact for weak characters becoming stronger through an item. Also see Super Empowering for people who have this effect. See Magic Feather for when someone thinks an object has this effect, but it doesn't. That can go the other way as well, though- sometimes characters will find they can use their powers without the artifact that supposedly grants them, eschew it as a Magic Feather, and then realize that they can do even better with their new-found self confidence AND the artifact. See also the Place of Power, where the environment can serve as an amplifier. See also Magical Accessory for other types of power granting jewelry. A Sub-Trope of Magic Enhancement. Not to be confused with "artifacts" (distortions) introduced by an audio amplifier, one of which led directly to metal.
— Grougaloragran, Wakfu, "The Eliacube"
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Anime & Manga
- The "Shikon no Tama" or "Jewel of Four Souls" in InuYasha is a jewel that increases a demon's strength. It can also be used by evil humans, although the stronger you are naturally the more useful it is to you. Trying to use it for good deeds, whether you are human or yokai, inevitably turns out badly.
- Mahou Sensei Negima!:
- The Library Island arc has the Baka Rangers searching for a magic book that supposedly makes the holder smarter, all for the purpose of passing their finals.
- One of the effects of the Pactios is the partner getting a magical power boost.
- There's also Negi's collection of magical artifacts like his fathers staff or Eva's ring.
- Ako's artifact (an enormous syringe with a very large and sharp needle) can significantly boost all of her target's physical and magical abilities.
- Subverted in Pokémon: The First Movie. Giovanni offers Mewtwo some Powered Armour that would "focus" his psychic powers. What it actually does is suppress them as they are too powerful for Giovanni to handle.
- The first story arc revolves around Lina accidentally getting ahold of the Philosopher's Stone, which she describes as "a super magic amplifier." Naturally, the resident Big Bad needs it to complete his scheme.
- The four talismans she bought from Xellos. The results of her amplified Dragon Slaves are rather impressive. In the novels, the "Demon Bloods" use the power of Ruby Eye and the Dark Lords of three other universes — one per gem. They allowed the previous owner (even though he was another container for a piece of Ruby Eye) to cast spells that normally require more power than any human mage can provide.
- The Sword of Light is used to amplify and focus a spell. As is, it dices lesser monsters and weaker true Mazoku effortlessly, but more powerful Mazoku can just grab the glow and hurl the wielder like a toy. The same foe, but the sword absorbed Dragon Slave? Single Clean Cut, and no smoking crater. Kills anything up to Dark Lords and works even with the spells Man Was Not Meant To Know. In novels, it's also known as Gorunnova, and it's one of the five weapons of Dark Star, no less. As the source of Black Magic, the Dark Lord has no such problems, but Gaav mocked Lina claiming that mere human like her is harmless, only her sister could power up Gorunnova enough to hurt him.
- In Fullmetal Alchemist, urban legend held that the State Alchemists' pocket watches, engraved with the Fuhrer's Seal, enhanced the power of the bearer's alchemy. They don't actually do anything, though — they're just watches. In the 2003 anime version, though, some of them contain unfinished Philosopher's Stones.
- Magical Girl Lyrical Nanoha Striker S:
- The Relics, super-high energy crystals from . The one implanted in Vivio in particular was mentioned in Japanese DVD inserts to not only boost her magic on its own, but to also allow her to connect to the Saint's Cradle and fuel herself with nigh-infinite power. And yes, as ViVid revealed, her Adult Form is inherent to her and not something given to her by the Relic.
- The Unison Devices: cute little foot-high flying Artificial Human girls who can synchronize with magic-users to boost their powers and add elemental effects. So far, we've only seen two, Reinforce Zwei and Agito.
- It turns out that one of the reasons Brew was wanted so badly by both sides in Soul Eater was its ability to amplify soul wavelengths. Mosquito is not impressed when it turns out the real artifact was in the back pocket of Death the Kid.
- The "Meteor Shard", a Plot Device recovered from Hell's Gate that changes hands a few times in Darker Than Black. Towards the end of the first series, Amber breaks it in pieces among her followers and uses the bulk of it to power the network of Dolls that guide Hei through the Gate, but later she spontaneously pulls the complete Shard out of her pocket due to the strange properties of the Gate. Then, Hei uses it to enhance his power to Reality Warper levels, enabling him to alter matter on a quantum level. In backstory one such thing was used to make a good chunk of South America completely inaccessible.
- In Pokémon Special, Yellow is a human example, as when she gets angry, her team of usually wimpy Pokemon has their levels jump up to the mid-80s in response.
- Witch Hunter Robin's fragment of wisdom has this effect unintentionally, and tends to give the bearer Power Incontinence with it.
- The Seven Deadly Sins has the Sacred Treasures of the Seven Deadly Sins. They don't increase the amount of power you have, but rather, how much of your own power you can draw out at a time. King describes their use best:
Let's say this lake is the power of one of the Sins... If you use your palm, how much water would you be able to scoop? Right, no mater how much water you have, with just your bare hands, this is what you get. But if you use a weapon, you'd get something like a glass or mug's amount of power. And then... If you use a sacred treasure, you can get a house's worth of power. In other words, you could draw power incomparable with what you could before!!
- Sailor Moon: This is explicitly the power of the Golden Crystal in the 1990s' anime. It can boost a sufficiently-powerful individual's abilities to godlike levels. It also doesn't require a single user; it can respond to the wishes of an entire planet, making humanity collectively strong enough to break the previous holder's Mass Hypnosis and destroy her Mook army.
- In Bleach, the Hougyoku grants incredible powers, but only up to what is possible (no matter how improbable) for the subject to achieve on his own. In other words, the subject's maximum potential.
- Most Sacred Gears in High School D×D have elements of this, but Issei's Boosted Gear is a textbook example. Boosted Gear doubles the user's power every ten seconds without limit, it's explicitly stated he could overpower God if he gets enough boosts. However, Issei's body is initially too frail to handle more than three or four boosts, and the base power it's doubling is minuscule to begin with. A big deal is made of the fact he has to work hard and make himself stronger before his Sacred Gear can really make him any more powerful.
- A Certain Scientific Railgun has a mysterious sound file called Level Upper. When people listen to it, ordinary people gain esper powers and espers get their powers amplified... for a short time, after which they fall into a coma.
- A Certain Magical Index: Aleister Crowley's Blasting Rod acts like this, amplifying any object's or being's native power to ten times what their opponent thinks it is. On its own, it's a fairly simple item, but since it's spoken of as a super-powerful magical weapon being used by one of the most powerful sorcerers in the world, people immediately think of it as extremely powerful to begin with, which it then amplifies even further. Even worse, during rematches, the Blasting Rod will increase the power to ten times what the opponent remembered from the first fight.
- In The Mage Will Master Magic Efficiently in His Second Life, catalyst are needed to use some spells or to make others easier. An example are Teleport rings, which make it possible use movement spells easier.
- In YuYu Hakusho, Kuwabara is given the Trial Sword (actually a hilt), which for him, forms a more powerful version of his Spirit Sword while boosting his strength to new levels.
- Marvel Comic's Doctor Strange has some artifacts which function this way and others which do nothing he couldn't do without them (though it frees up his concentration or power to use the artifact rather than his own strength).
- Captain Britain (Brian Braddock) was originally dependent on his Amulet of Right for his strength, and his Star Scepter for flight. When Merlyn gave Brian a new costume, he integrated those items into the suit, and then when he had to bring Brian Back from the Dead, he remade Brian's body so that the powers were a part of him, but the suit still served as an amplifier, increasing his abilities while he wore it. Brian's powers were also tied to the British Isles and its link to Otherworld, so the suit also allowed him to keep his powers while away from Britain; when the suit was destroyed in Inferno and he was stranded in New York, his powers waned until he could return home. Eventually his powers evolved again so that they were dependent on his own confidence, but whatever suit he's wearing still tends to serve as an amplifier/backup power source.
- In B.P.R.D., Liz uses an ancient Hyperborean thing that kinda looks like a light bulb with a spiky thing on top to amplify her pyrokinesis to the point where she can singlehandedly incinerate the mountain-sized Katha-Hem.
- Although it's technological rather than magical, Cerebro fits this role in X-Men. It boosts the range and, sometimes, the power level of Professor Xavier's telepathic abilities.
- Wonder Woman has been shown from time to time using the Gauntlets of Atlas which multiply the wearer's strength and stamina tenfold. Given that Wonder Woman has Superman-class strength to begin with, she's devastating when she wears them. These were eventually passed on. She also used to have Sandals of Hermes that amplified her speed and gave her flight but her powers have been upgraded to include greater speed and flight.
- The Mighty Thor has the Belt of Strength, which doubles his strength and endurance, and Mjölnir, which focuses Thor's innate Elemental Powers. The Belt is straight from the source material. If need be, Thor could increase the boosting effect by tightening the belt.
- Green Lantern:
- It's been shown multiple times that wearing multiple rings can multiply the effective power of the wearer (as Hal Jordan did during Emerald Twilight). The Alpha Lanterns use this to police the other lanterns by wearing two rings and internalizing their power batteries.
- Blue Lanterns have a symbiotic relationship with Green Lanterns. The willpower of the Greens is necessary to allow Blue Lanterns to do more than just fly and project personal force fields, but a Blue Lantern can also charge a Green Lantern's Ring to 200 percent capacity.
- The Reality Gem of the Infinity Gems, most famous for when Thanos gathered them to make The Infinity Gauntlet. It has other uses, but its prime use is to heavily boost the power of other Infinity Gems, plus make it easier for less-than-godlike beings to use the gems.
- The Sword of Acorns in Archie Comics' Sonic the Hedgehog had this ability when used by powered individuals, such as Mammoth Mogul and Ixis Naugus.
- The Silver Surfer can actually fly without his board, but it's shown to be less effective and uncomfortable for him.
- In With Strings Attached, the Vasyn turns out to be capable of vastly amplifying spells cast through it. So does Paul, for that matter.
- Turns out the Moon Dial in Futari Wa Pretty Cure Blue Moon does more than just erase people from existence and reset time. Kainatrol, after erasing Eiender, commandeers it late in the story and undergoes a huge usefulness boost. The only thing it won't work on is somebody with one of its pieces, though its effectiveness in general is in question considering the existence of echoes.
- In Sweetie's Mansion, Sweetie was given a box that contains a power of an alicorn by the ghost of Madame Fleur so she could use it to bring back Twilight, Applejack, and Fluttershy from being trapped in paintings.
- In The Dashverse, it's revealed in Hot Heads, Cold Hearts, and Nerves of Steel that when Sombra converted Tambelon into the Crystal Empire, he designed it so that the whole thing could drain the Crystal Ponies of their power and transfer it to him, making the whole Empire his Amplifier Artifact.
- In Dusk's Dawn the ring on Star Whistle's hoof amplifies her magic, which causes the windstorm and makes her summon magic tornadoes.
- Mega Man: Defender of the Human Race:
- Wily used his protocol disruptor's signal inducer for Splash Woman, greatly enhancing her brainwashing powers.
- The Jadous Sphere and its shards can greatly power up robots.
- In the Pokemon fanfic Natural Liberated, N's ability to use the attacks of Pokemon is amplified by a device called the Natural Machine, which is the cube on his belt in his artwork. It is made of miniaturized Technical Machines combined into one unit.
- The Ojamajo Doremi Fan Fic Ojamajo Doremi: Rise of the Shadows has the Seven Seals. They not only empower the villains who were using them for their Evil Plan, but they were also used by the Queen to go into a Super Mode and save the day.
- The potion Twilight is working on in Double Rainboom seems to be this. It enhances a pony's special talent to ludicrous extremes, allowing them to pull off feats they normally couldn't. Needless to say, Rainbow Dash can't resist giving it a try, and it ends up increasing her speed and durability to the point where she smashes through the ceiling of Twi's tree home on accident after she tries it out, flies around the town at incredible speeds even for her, allows her to fly into low orbit, and gives her the strength to pull off the titular double rainboom that proceeds to tear open a worm hole to another universe. Granted, it does have the nasty side effect of temporarily taking away a ponies natural abilities after it starts to wear off, but it still manages to be this trope Up to Eleven. Considering what happens later in the animation, it's been theorized that said potion is actually an unstable form of Chemical-X.
- The Self Insert Fan Fic The New Math has amplifier artifacts in the form of Devices, which boost the ability of a mage to create and power spells.
- The soulstone horns from The Blooming Moon Chronicles allow ponies to use magic which they would not have been able to use before, and in some cases, act as prosthetics.
- A Shadow of the Titans has the Talisman of Hwan the Bright, which provides a massive boost to the magic of whomever uses it. When in Jinx's possession, her usual powers go from small-scale bad luck to bending Murphy's Law in her favor.
- Anything made out of platinum in the Triptych Continuum. While all other metals conduct various forms of magic with greater or lesser efficiency, platinum will conduct any form of magic (unicorn, Pegasus, or earth pony), with greater than 100% efficiency. This allows for the making of phenomenally powerful magitek, and devices that will run forever without recharging. On the other hand, platinum is also notoriously dangerous to work with. If you get your crafting slightly off with any other metal, the device will be slightly less efficient, or at worst it just plain won't work. But with plantinum, it will continue to amplify the magic cast on it, but will be unable to discharge that energy, causing it to simply build up until it exceeds the metal's storage capacity.
Films — Animation
- The Gorg super chip from Home, which supercharges any device it's plugged into.
- My Little Pony: Equestria Girls – Rainbow Rocks:
- The ruby pendants worn by the Dazzlings amplify their magic in the human world, allowing them to inflict a Hate Plague on the people with their Mind-Control Music, and gain power through absorbing said negative emotions. Once the pendants are destroyed in the final battle, they lose their magic abilities and can no longer sing in tune. The Gems are a prominent motif of the movie, notably in the opening credits.
- In the climax, Vinyl Scratch's DJ booth and bass speakers act as this for the Rainbooms, basically weaponizing their Magic Music to blast at the Dazzlings' Siren avatars.
- DuckTales the Movie: Treasure of the Lost Lamp: The villain Merlock possesses an emerald amulet that, when used in conjunction with the Genie's lamp, lifts the Three Wishes restriction, essentially giving him limitless Reality Warper powers by proxy.
Films — Live-Action
- X-Men Film Series: The Cerebro supercomputer boosts telepathy.
- Lone Wolf: The Psychic Ring and the Grey Crystal Ring. They are implied to be useful only because Lone Wolf has strong Psychic Powers already. Their uses are very situational, however.
- The One Ring in The Lord of the Rings was said to act like this: it granted its wearer power based on the wearer's stature. The more powerful you were, the more powerful the Ring would make you. It was originally created by Sauron as a means to make his already formidable Mind Control powers strong enough to take over the other Rings of Power (and through them, their wearers). That it also served as a Soul Jar for Sauron was a nice little side-effect. This is why it was justified that the little hobbit Frodo would be the one to carry it to Mordor instead of someone more powerful like Gandalf. Worst case scenario, Gandalf with the Ring would become just as terrible as Sauron, while a hobbit would just become a little ghoul like Gollum.
- Several in the Star Trek Novel Verse.
- In Star Trek: The Lost Era, there are the masks upon which Oralian recitation masks are based. The mask in Well of Souls is the best example. Useless to those who are not psi-sensitive, it enhances and focuses the talents of empaths and latent telepaths. It is designed to allow members of its planet's ruling family to enhance their psi talents to the degree that their mind can serve as a vessel for the spirit lifeform Uramtali. Without the mask, these talents would no longer be adequate, as the ruler's genes were diluted by centuries of inbreeding. In the Star Trek: Deep Space Nine Relaunch, there's the pagh'varam (Bajoran for "soul key") which also serves to boost latent telepathy. It's actually a fragment of a Bajoran Orb of the Prophets.
- The Selakar from Star Trek: Department of Temporal Investigations use crystals that amplify their psionic talents.
- The Kaiburr Crystal in the Star Wars Expanded Universe novel Splinter of the Mind's Eye can greatly increase the Force ability of any Force user who touches it. However, it only worked so long as the crystal remained near the temple of its origin.
- The Wheel of Time: angreal and sa'angreal, magical Lost Technology that boosts the amount of power a channeler can draw upon. They usually have buffers to prevent the user from going too far, but not always. The latter are just a stronger variety of the former. The strongest are a male-female pair whose combined capacity could crack open the planet; when they finally get put into use, every channeler on the planet can sense it. The runners-up include the sword Callandor (usable by men, primarily wielded by Rand), Vora's wand (usable by women, primarily wielded by Egwene) and the scepter Sakarnen (usable by men, wielded by Demandred).
- Aside from its other powers as a soul-eating, universe-annihilating supersword, Stormbringer boosted Elric's magical and physical strength, compensating for the Albino Emperor's own fragile health.
- In World of Ptavvs by Larry Niven, Kzanol the Slaver attempts to retrieve his amplifier helmet, which will increase his natural ability to control the minds of a relatively few slaves to the point where he will be able to mentally control the entire solar system.
- The Lens of Arisia, from E. E. “Doc” Smith's Lensman series, fits this trope. Kim Kinnison has vast psychic powers on his own after being converted into a Second-Stage lensman, but his Lens gives him vastly hugely mind-bogglingly big psychic powers.
- In Marion Zimmer Bradley's Darkover stories, matrix crystals could greatly increase psionic abilities.
- All wands (most notably the Elder Wand) in Harry Potter amplify the strength of a wizard.
- Any jewel in the Inheritance Cycle can be turned into such an artifact. Just load them up with energy, and you can draw on that energy later to boost your power.
- Jon-Tom's dual-necked, guitar-like duar in Alan Dean Foster's Spellsinger series is sometimes this, sometimes not. In the first few novels, it's implied that duars are fairly common instruments in the series' Alternate Universe setting (in the first book, Jon-Tom picks his up from a sack of musical instruments dropped by by a fleeing merchant, and his companions act as if it's a common item), and it merely functions as a focal point for his latent magical powers. In later novels, however, it's indicated that the magic comes from the duar itself, which has been retconned into a rare and valuable item, and Jon-Tom's facility with it is more practice than anything else.
On the other hand, there are quite a few inconsistencies between the first books and the later ones, including a number of increasingly obvious and basic errors such as the names (and number) of Mudge & Weegee's kids changing from one book to the next, so it may just be that Foster didn't remember (or keep very good notes on) what he'd written in the previous volumes. Alternately, considering some of the world-shaking effects Jon-Tom achieves with his duar in the first few books, it's conceivable that the instrument became magically-empowered as a result of these events. At least one of his feats, the summoning of M'nemaxa, can be performed only once in a wizard's lifetime, which would explain why he can't just repeat the process to enchant another duar.
- The Young Wizards series has the Book of Night with Moon, a supernatural book which describes the entirety of existence. Rather than increasing the strength of the spells a wizard casts, it makes it so that even the most complex and difficult of spells are easy to cast. However, some spells did receive a power boost just from being cast near the book, such as the time shift spell working better than expected.
- Mistborn series by Brandon Sanderson:
- Duralumin works like this for an Allomancer's powers, causing them to expend all the metals they are currently burning in one explosive burst.
- Later books in the series introduce nicrosil, which can be used amplify another Allomancer's powers in the same way as duralumin is used for one's own. This can either be used to buff allies or unexpectedly hit enemies with more power than they can handle.
- This is what the shadowlight does in Duty Calls. Exposure to it awakens latent psyker abilities, but without proper containment it warps you to death.
- The children's novel, The Hedge Wizard, is about a young boy who set out to become a wizard. He turns out to have no real talent for magic, but is revealed to function as one of these, greatly amplifying the magical power of any other wizard(s) he is in contact with or any spell he joins in casting (spells he tries to cast on his own are usually either weak or backfire-prone)
- Bluestone is essential to the Singers in The Echorium Sequence, as it amplifies their Songs of Power. Its evil counterpart khiz-crystal shares this property.
- Spikard Rings from The Chronicles of Amber — incredibly powerful rings of ancient and mysterious origins, connected to multiple sources of magic powers located around The Multiverse, that allow their users to create any magical spells they need in an instant - more practical and powerful than most magic in the universe. Merlin theorizes that at full power a person armed with one can even damage manifestations of Pattern and Lorgus. However they seems to be addictive and can be themselves targeted by any magic - Dara and Mandor enhances a spikard, set for Merlin to pick, with mind-controlling spells and it would work, if Bleys hadn't replaced it with another spikard.
- The Dresden Files: A wizard's "focus" is an item enchanted in such a way that makes casting spells easier. They aren't required, but most wizards carry at least one around anyway. Harry's full toolkit involves a staff (for most spells), a blasting rod (the fire spell he uses for most direct "kaboom" attacks. Can be done with staff, but the rod's better as it's specifically designed to channel that one fire spell into a tight beam of Death Ray.), a shield bracelet (force field for protection), force-collecting rings (every time he moves some kinetic energy is collected. He can release it as a powerful shockwave.), and a pentacle necklace (often uses it as flashlight. However, with faith-based magic the symbol's gotta be something you believe in; a symbol of magic works for him as a cross would work for a Christian against some breeds of vampire among other things.) All these simply make it easier to call up and direct power; he's had to use many spells without the appropriate focusing tools, but finds it much more difficult, draining, and harder to control. He gets a bit better at it as time goes on, and these days is almost never lucky enough to have his full arsenal at hand. Also, Elaine carries a chain, and Molly carries a pair of wands.
- The Girl Who Would Be King has a stone carved with three rings and a raven, which increases Bonnie and Lola's power when they're in contact with it. Bonnie eventually discovers that it's not the stone itself that amplifies their powers, but the symbol carved on it.
- The Spellmonger Series has Irionite/Witchstone, an incredibly rare form of amber that can amplify magical energy by a ridiculous degree. It is so powerful that just owning a piece basically makes you more powerful than every non-irionite owning mage on the planet.
- The Dominion Jewel in Song of the Lioness. It's been used through history as a tool by benevolent rulers and tyrants alike.
- The Zombie Knight features Haqq's shield. When used by a servant, it boosts their passive defense to match that of Abbas Saqqaf, a powerful Sandlord servant who helped make the thing. The more powerful you are, the longer you can safely use it at a stretch. For Hector, that currently works out to...six minutes per day. Although even without using its power, it's still an awesome shield.
- The Necromancer Chronicles has the magic rings worn by accomplished magic-users allows them to bind spirits and ghosts into the stones, which amplify their abilities since they serve as an additional power source.
- In Loyal Enemies, the Staff of Fertility is an elven artifact which amplifies their already inherent ability to shape the natural world around them and allows them to grow their city naturally. The downside is that it also acts as a downsized Cosmic Keystone for their part of Ash Grove and thus, its theft is a really big deal. It's shaped like a non-assuming piece of wood.
- Power Rangers
- Various versions of the Battlelizers.
- On top of that are the Sentai SWAT Mode, the Megatector, Super Geki Claw, the InrouMaru, the Miracle Headders, and the GB Custom Visor most recently.
- Kamen Rider has had some fun with this recently. Listed below.
- Kamen Rider Ryuki and Knight's Survives.
- The Faiz Blaster from Kamen Rider Faiz.
- The face cards (Fusion Jack, Absorb Queen, and Evolution King) in Kamen Rider Blade.
- The Armed Saber in Kamen Rider Hibiki.
- The Hyper Zecter(s) and Perfect Zecter from Kamen Rider Kabuto.
- Kamen Rider Den-O's K-Taros.
- Kamen Rider Kiva's Tatsulot.
- The K-Touch from Kamen Rider Decade.
- Kamen Rider Double:
- The purple Core Medals in Kamen Rider OOO.
- The States Switches — Elec, Fire, Magnet, Cosmic, Double Rocket and Fusion — in Kamen Rider Fourze.
- The Dragon Rings, Drago Timer, and the Infinity Ring in Kamen Rider Wizard.
- And for the villains, the Yomotsuheguri Lockseed from Kamen Rider Gaim, at the cost of one's life force for power.
- Warehouse 13 is full of these. Examples include Benjamin Franklin's ring (amplifies the human body's bioelectricity to turn a hand into a flashlight; also works to turn a laser cutter into a lightsaber) and lightning rod (amplifies the energy level of any attached device), a James Braid's chair (amplifies the innermost desires of anyone who sits on it), Spine of the Saracen (amplifies speed, strength, durability, and angel, also grants the ability to deliver lethal electric shocks), Alessandro Volta's lab coat (amplifies "biomagnetic attraction").
- Wizards and Warriors In this series both Wizards and Witches make use of crystal pendants called 'Monocles' to boost their innate magical ability. The evil Archwizard Vector manages to make do without his when it is stolen by the evil Prince he serves (though Vector still very much wants it back).
- To avoid a list of 20 billion entries, let's just say: nearly all of them, and move on. Since any item that grants a bonus to anything (well, anything that's beneficial anyway) qualifies as one. This is in fact one of the peculiarities of Tabletop RPGs, deriving especially from Dungeons & Dragons. In the fantasy fiction the original RPGs were based on, amplifier artifacts are the exception, not the rule, with most magical items and artifacts granting new abilities rather than enhancing existing ones, but in these games by far the most common magic item ability is "pluses". While useful for game balance, it's directly responsible for the style of gameplay that amounts to constantly questing for more items to give you better pluses, and many people feel it makes magic items rather bland. Video games inherited this style of magic items directly from Tabletop RPGs.
- Dungeons & Dragons specifically has two primary amplifiers: pearls of power, which increase a caster's magical stamina allowing more spells to be cast in a day than usual, and metamagic rods, which increase the actual power and effect of spells cast using them a number of times per day. Other classes occasionally get something similar where their class makes the item stronger (the Paladin's holy avenger is still an excellent magical sword in any other hands) but that's typically explained as the item having portions of its power locked away from the unworthy rather than this trope.
- The FATE system goes out of its way to avoid this by making any item a mechanically separate game element unmodified by other items, and any aspect of an overly complicated item similarly count as a mechanically separate item.
- One of the reasons that Old World of Darkness was famously a min/maxer's paradise is that almost all game lines had a skill that turned a relatively common substance, usually the basic fuel for powers, into this. Vampires without celerity needed blood to live, and had to burn it up to use powers. Vampires with celerity burned blood to take extra turns, letting them use all of their powers (including basic ones like "sharp teeth") several times before the enemy even acted.
- Games Workshop games:
- The Mortis Engines from Warhammer, and its sequel Warhammer: Age of Sigmar, are overflowing with the power of death magic and can boost the spell-casting abilities of necromancers who practice their art nearby.
- Warhammer: Age of Sigmar:
- The Portal of Skulls carried by Bloodsecrators of the Bloodbound Warhordes are powerful icons of the Blood God that, once opened, creates a rift in reality that allows the rage of Khorne to saturate the surrounding area, driving any nearby followers of the Lord of Skulls into a frenzy that boosts their attacks and grants them reckless courage.
- Some Kairic Acolytes carry Scrolls of Dark Arts into battle. These mystical scrolls contain many arcane secrets that enhance the sorcerous abilities of the Acolyte and his cohorts.
- Several objects or substances in BIONICLE. Antidermis, the substance that makes up the Makuta species, acts as a sort of steroid to Brutaka's race. The Nui Stone drains the elemental energies of nearby beings, giving its owner more power. There are also elemental masks which can enhance the extant elemental powers of their wearers, and the Mask of Elemental Energies can even replenish them. The Mask of Fate unlocks the physical potential of their bearers — it boosts their athletic abilities to their limits, but doesn't allow feats that the wearer's species would be physically unable to perform.
Toa Kopaka: Interesting. The power is in me. The sword is but the focus.
- The Toa Tools are also typically depicted like this.
- Wayne in Lost Planet had a attachment for his device to help him unleash the full potential of the mechs in the game. For no reason other than the plot he didn't put it on when he first received it and didn't use it until the final boss. Lucky too as it wiped his memory.
- The Tenno's Warframes in Warframe are not the source of the Tenno's power, rather a suit that amplifies (and possibly controls) the powers the Tenno received when they were tortured in the Void by the Orokin.
- The Ray Sphere from inFAMOUS, the device that started it all kills everyone in a six-block radius to accelerate the development of the user's powers.
- Clive Barker's Undying features disposable items known as Amplifiers, which can be used to take one of your magic spells up one level. There's also the Gel'Ziabar Stone, which boosts all your spells one level if you use it in concert (though you effectively have no gun if you choose to do this).
- The Yatgy Stone in Nocturne is an artifact that massively increases a vampire's power, while rendering him immune to normal vampiric weaknesses. The heroes set off on a mission to reclaim it from a vampire lord who's recently stolen it. They succeed, only to lose the stone to its original vampiric owner, who (unlike the vampire who took it from him) thankfully doesn't have any apocalyptic plans for it.
- In The World Ends with You Kitanji gives his Reapers O Pins, which are supposed to make them stronger This is a subversion. All it does it let them be mind controlled.
- In Gotcha Force, once G Red recovers his missing code that the Death Force stole from him, he goes from being the Jack-of-All-Stats to being one step below Game-Breaker.
- Several held items in the Pokémon series, most notably the Light Ball, designed to give Pikachu a massive boost in Special Attack.
- From System Shock 2 we have various implants that increase various stats and skills. The PSI-Amplifier from the same game is technically this.
- According to the backstory, the Psi Emitters in StarCraft amplify the "signature" of a telepath, allowing them to be heard over huge distances, at least by the Zerg. Also, Protoss Khaydarin crystals amplify the user's psionic abilities in various ways, such as the Zealots' bracers, which allow them to form Psi Blades.
- Sonic the Hedgehog:
- Chaos Emeralds. It's been commented by the writers of SEGA that they don't simply grant new powers, but amplify what one already had, as well as modify a few powers occasionally.
- The Chaos Emeralds had the Amplifier Artifact treatment pulled on themselves by the master Emerald to form the Super Emeralds.
- The series is almost built around them when you throw in almost every other collectible item. The World Rings, Sacred Swords, Sol Emeralds, etc, etc...
- Magic Rampage: The Runes used to upgrade magic-based weapons.
- The Evokers from Persona 3 only work if someone has the "potential" to summon a Persona to begin with, even if that potential is artificially induced. The Evoker just makes things much easier.
- Several throughout the Mortal Kombat franchise, most notably the Dragon Medallion and suit of ancestral armor the younger Sub-Zero picks up in Mortal Kombat: Deadly Alliance and Mortal Kombat: Deception.
- Dragonfable: You have multiple Elemental Orbs, Weapons of Doom, the Dragon Amulet, etc.
- In Dominions, many magical artifacts are of this nature, doing such things as assisting casting or lessening magic resistance.
- Most of the items in League of Legends (and, one might imagine, other Multiplayer Online Battle Arena games with similar fantasy trappings) work like this. Despite looking like ordinary weapons and equipment, they have their effects regardless of whether they would be physically possible to wield simultaneously. For example, among the Infinity Edge, The Bloodthirster, and the Phantom Dancer items, four swords are depicted; yet completely humanoid, two-armed champions are able to take advantage of them all simultaneously while attacking with guns or bows.
- The Elder Artifacts in RuneScape are partial versions of this. In addition to acting as sources of power from which the gods draw their godhood, each artifact seems to have a specific function. There are 12 in all.
- Artifacts in the S.T.A.L.K.E.R. series. Spawned from anomalies scattered around the Zone, they have varying effects. Some will increase your stamina regeneration rate, others will give you a Healing Factor or Made of Iron properties, but they all have at least one negative side effect, usually increasing your weakness to some sort of damage or emitting radiation into your body. Wearing the right ones can turn you into a Lightning Bruiser - which you'll need to survive in the Zone.
- In The Legend of Dark Witch, Tres crystals can amplify Zizou's abilities.
- The Tome of Power in Heretic.
- Magic Amplifiers in Ryzom are gloves that are used primarily by Magic users to increase the power (and decrease the casting time) of their spells, whether they be offensive Elemental Magic spells or defensive Healing spells.
- Near the end of Jade Empire, it is revealed that the amulet you've been reassembling and allows you to use Essence Gems is simply an amplifier for the powers inherent within you as a Spirit Monk, which is why at that point you no longer need it. However, in the hands of others it is still a powerful mystical artifact.
- The Amplifier in Unreal is a modal battery that boosts your energy weapons' power. If your fully evolved Dispersion Pistol wasn't enough of a Hand Cannon.
- The Legend of Zelda: Ganon's Triforce of Power usually acts like this, enhancing his already impressive physical strength and immense magic power to quite literally god-like levels. Zelda's Triforce of Wisdom is also hinted to be the source of her own powerful magics, and is probably the only reason she can affect Ganon after he's been weakened. Curiously the Triforce of Courage never seems to do the same for Link.
- Many Pokémon have hold items that only work for them. They may grant simple stat boosts or in the case of Mega Stones, and Z-Crystals, grant a Mega Evolution or a powerful one-time attack.
- Evie from Paladins uses a crystal that she trapped a powerful frost elemental in to amplify her ice magic. Overnight, she went from apprentice to Winter Witch.
- Gunnerkrigg Court:
- The Blinker Stones can amplify and focus their users' Psychic Powers. And some particularly talented psychics can learn to replicate these effects without the stones.
- Fairies as magical creatures approve using a blinker as an instant campfire, but consider the use for mere look around out-of-body to be for mentally weak.
- The Power Booster Rod of It's Walky! is Exactly What It Says on the Tin. (Okay, no, it's not- it contains a preset amount of energy that can be tapped and used by its wielder. But the amount that can be tapped at one time is proportional to the starting power level of the wielder, so a super-powered character can cause more havoc than a normal one.) note
- The aptly-named amplifier in Juathuur, and Soveshei's serum.
- This is the effect that being touched by the Sovereign of Sorrow in Captain SNES: The Game Masta gives. A given's sprite's abilities will be greatly enhanced, at the cost of soul-crushing sorrow
- The Magitek Implants in Elf Blood generally do not add new abilities to their host, but rather improve upon their existing natural talents. Examples include a Sympathetic Magic booster to improve the effects of spells, and enhanced strength.
- Eerie Cuties has an artifact that stimulates succubus powers. Three guesses at how that looks?
- Tedd's gauntlet in El Goonish Shive, acts like a capacitor, it drains and stores his limited magic energy over a long period of time then, when he needs a power boost, it gives it back all at once.
- In Zach Mann And SD, S.D.'s hat amplifies how fast he heals. Unfortunately, it also amplifies his stupidity...
- The Order of the Stick, being based on D&D, has most common magic items being of this kind. Notably, Roy's Belt of Giant Strength, Elan's Belt of Charisma or V's Ring of Wizardry. This is Lampshaded by Haley with a Potion of Glibness: she takes it from Elan to use herself, because while it would make him a good liar, she's already a good liar so it will make her an utterly amazing liar.
- Unicorn Jelly: A teenage girl is stabbed to death by a crystalline lifeform and resurrected by the title character. The crystals that penetrate her brain act as multi-cellular fiber-optics, making her a super-genius but emotionally deadened. She ends up saving Transmyltania's human civilization.
- Cucumber Quest has the Hocus Crocus, a flower rumored to multiply a person's magical capabilities by the number of years it took to bloom. This is generally considered a joke because the Hocus Crocus blooms once a year... until one specimen appears that took two. It works, incidentally.
- In The Gamer's Alliance, the swords Dawn and Dusk have magical powers which are fully unleashed only when they are used by their chosen wielders.
- The cybaspheres from the web fiction serial Dimension Heroes both give the heroes new powers, as well as amplifying their old ones.
- The self-ware black scythe from Trinton Chronicles can act as this to some people.
- The SCP-914 acts this way on its "Fine" and "Very Fine" settings. Just pray that it doesn't manage to overshoot...
- SCP-248 are stickers from a corporation that produces SCPs. These stickers have "110%" printed on them, and attaching them to anything will boost performance to, you guessed it, a 110% percent. This also includes senescence.
- The Questport Chronicles has Gaudior's Horn, which powers spells up so much that a powerful sorcerer uses it to destroy Questport.
- In the Global Guardians verse, the seven Atlantean moonstones amplifies telepathic abilities, strengthening even the weakest of psychics to the point of being able to mind rape anyone on the planet. However, the user becomes more and more paranoid and detached from humanity the longer he uses the stone.
- The Arch Magus in Gargoyles uses three magic items to accomplish both amplify his powers and gain new ones. The Phoenix Gate to teleport and time travel, the Grimorum to give him many more spells, and the Eye of Odin to boost his natural magic power and let him handle the first two without having a Super-Power Meltdown. Guess which one was the key to defeating him?
- An episode of the Dungeons & Dragons cartoon has an Amplifier Artifact location, The Dragon's Graveyard, where the heroes' weapons were forged. When they were used there, they had greater effect, allowing the heroes to overpower the Big Bad they were normally forced to run from.
- Transformers Cybertron:
- "Cyber Key Power!" A Transformers in this can gain temporary power boosts, in various forms, by using his or her Cyber Key. Additional or bolstered weapons, turbothrusters, and the like. However, their fuel consumption is typically increased. An interesting form of this trope. Cyber Keys should not be confused with their bigger MacGuffin - Applied Phlebotinum hybrid cousins, the Cyber Planet Keys. (Sadly the toymakers at Hasbro made this very mistake. Were they even allowed anywhere NEAR the episodes?)
- Minicons did this as well, which was why they were so sought after. Most unlocked new abilities or weapons in robot mode, but in vehicle mode they were often said to increase speed as a bonus.
- Powermasters did this in G1... except in most Japanese continuities, where the large robot body was non-sentient and controlled entirely by the Powermaster partner.
- This is one of the many functions the Matrix of Leadership has served in the various iterations of the franchise.
- The Allspark sometimes serves a similar function.
- Starmetal in Conan the Adventurer amplifies magic-users power.
- The Eliacube in Wakfu, a piece of Precursor tech which exponentially increases the power of magical abilities at the cost of Life Energy (not necessarily the user's).
- My Little Pony: Friendship Is Magic:
- The Elements of Harmony. As it turns out, there are reasons both simple and complex that it was Twilight Sparkle and no other pony who ended up on the quest for them.
- We find out later that The Power of Friendship is quite strong without the Elements of Harmony themselves, as it alone was able to incinerate three Windigos who had the power to freeze the world. It seems the Elements just amplify this power to the point it can One-Hit KO gods.
- The Crystal Heart from the third season premiere provides a similar function. As long as the Crystal Empire's inhabitants keep their spirits up, their love and cheer power the Heart and allow it to protect the Empire.
- The episode "Magic Duel" brings us an evil version in the Alicorn Amulet, a powerful artifact that gives the wearer nigh-godlike magical power while slowly corrupting them with every spell they cast.
- In the "The Cutie Re-Mark" two-parter, we see that the Cutie Map inside Twilight's Friendship Castle can be used as such, since it grants access to every part of Equestria. In order to make her Time Travel spell work in the manner she wants to, Starlight Glimmer augments Star Swirl's old single-use spell with the power of the Map, which in turn draws power from the Tree of Harmony itself. The resulting power boost lets her travel back to any time and place she chooses, as often as she wants.
- Thunder Cats 2011:
- The Eye of Thundera serves as an amplifier as well as a Power Crystal for the Sword of Omens. The Sword, though crafted from enchanted metal, is little more than a heavily-ornamented dagger either without the Eye, or in resting state. When a By the Power of Grayskull! is uttered, the Eye activates, and the sword extends to longsword length. Other crystals also exist, that can transform simple gauntlets into full suits of Adaptive Armor.
- Averted with the Sword of Plundarr, the evil bigger brother of the Sword of Omens, forged from the same metal and infused with evil power in its own right. It is strongly implied that the Sword of Plundarr without a power crystal is just as powerful as the Sword of Omens with the Eye of Thundera. A big plot point is keeping Mumm-Ra from getting the Eye of Thundera which if mated with the Sword of Plundarr, would make it the most powerful weapon in the universe.
- Mystic Hearts in W.I.T.C.H., most notably the Heart of Kandrakar which the Guardians use to power up (we see that the previous generation of Guardians, who no longer have the Heart, can still use their powers but only at a greatly reduced level). Every dimension has a Heart that generates all of its magical energy, so having sole control of one quite desirable, and quite dangerous even for good guys. (Yes, that includes this dimension, but the Heart of Earth is Lillian. Thankfully, Nerissa's attempt on that one is thwarted.) In the second season, Big Bad Nerissa steals and combines the Hearts of Meridian and Zambala in order to create a new Amplifier Artifact called the Seal of Nerissa, turning her and former Big Bad Phobos when he in turn steals it from her into one of the most powerful characters in the series.
- The Series Five brain implants in Adventures of the Galaxy Rangers didn't give the title heroes their particular abilities; they just amped up what the Rangers already had. This was aptly demonstrated in the Brought Down to Normal episode "The Power Within".
- Cyborg of Teen Titans once had a super-processing chip named the Max-7 installed to increase his speed, strength, and intelligence. Unfortunately, he overloaded it and had to have it removed. The biggest problem with the chip was that, as he kept overclocking it to increasing his abilities and intelligence... he did so at the expense of his humane characteristics, essentially turning him into an emotionless robot. Overloading it into uselessness restored him to normal.
- He-Man and the Masters of the Universe (1983):
- In "Evil-Lyn's Plot", it is revealed that He-Man's chest harness is made of coridite, a substance that amplifies strength. Skeletor makes an amulet out of coridite that makes him strong enough to grapple with He-Man, at least until He-Man manages to destroy it.
- In "The Games", Skeletor unveils a device called the Evilgizer, which is said to increase the evil of its target. He uses it on his dimwitted henchman Spikor, who becomes chosen as Evil's Champion in a contest by the Bendari. Oddly, it didn't affect his personality or power level at all.