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An electronic amplifier is a device for increasing the current, voltage or power of a signal. It does this by taking power from a power supply and controlling the output to match the input signal shape but with a larger amplitude. more...

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Adcom Gfa-1A Power Amplifier - 200 wpc 8 ohms / 350 wpc 4 ohmsAdcom Gfa-1A Power Amplifier - 200 wpc 8 ohms / 350 wpc 4 ohms $299.99 Adcom Amplifier Model Gfa 5800Adcom Amplifier Model Gfa 5800 $1,199.99
Power amp Adcom Gfa 535Power amp Adcom Gfa 535 $115.00 Adcom Gfa-535 Audiophile Stereo 60W + 60W Power AmplifierAdcom Gfa-535 Audiophile Stereo 60W + 60W Power Amplifier $239.00
Adcom Gfa-555 Stereo Power Amplifier 200 Wpc - Powers OnAdcom Gfa-555 Stereo Power Amplifier 200 Wpc - Powers On $299.95 Adcom Gfa-535 2 Channel Power Amplifier - Nelson Pass Design!Adcom Gfa-535 2 Channel Power Amplifier - Nelson Pass Design! $90.00
Adcom Gfa-555 2-Channel Stereo Power Amplifier - 200 Wpc - Cleaned - TestedAdcom Gfa-555 2-Channel Stereo Power Amplifier - 200 Wpc - Cleaned - Tested $929.95 Adcom Gfa-4702 2 Channel Amplifier AmpAdcom Gfa-4702 2 Channel Amplifier Amp $1,999.95
Adcom Gfa535 power amplifier excellent working conditionAdcom Gfa535 power amplifier excellent working condition $125.00 Adcom Gfa-555 Stereo Power AmplifierAdcom Gfa-555 Stereo Power Amplifier $400.00
New Adcom 5500 2 Channel Power AmplifierNew Adcom 5500 2 Channel Power Amplifier $999.99 Adcom Gfa 5002 Power Amplifier 50Wpc Tested WorkingAdcom Gfa 5002 Power Amplifier 50Wpc Tested Working $155.98
Adcom Gfa 5802 amplifier 300Wpc Class A/B Nelson Pass DesignedAdcom Gfa 5802 amplifier 300Wpc Class A/B Nelson Pass Designed $1,000.00 Adcom Gfa-5500 (200W/Ch) - Power AmpAdcom Gfa-5500 (200W/Ch) - Power Amp $449.00
Adcom Gfa-545 Ii Power Amplifier 120V 600WAdcom Gfa-545 Ii Power Amplifier 120V 600W $244.96 Adcom Gfa 7400 Excellent Condition 5 Channel Amplifier VintageAdcom Gfa 7400 Excellent Condition 5 Channel Amplifier Vintage $300.00
Adcom Gfa-545 2 Channel Power Amplifier Serviced!Adcom Gfa-545 2 Channel Power Amplifier Serviced! $299.99 Adcom Gfa-2 Power AmplifierAdcom Gfa-2 Power Amplifier $349.00
Adcom Gfa- 575Se Bridgeable High Current Stereo Power Amp Audiophile DreamAdcom Gfa- 575Se Bridgeable High Current Stereo Power Amp Audiophile Dream $2,150.00 Adcom Gfa-5400 High Current Stereo Amplifier-125 Rms X 2 JapanAdcom Gfa-5400 High Current Stereo Amplifier-125 Rms X 2 Japan $349.95
Adcom Gfa-555 Ii Power Amplifier 200 Watts Per ChannelAdcom Gfa-555 Ii Power Amplifier 200 Watts Per Channel $599.99 Adcom Gfa-545 Ii 2 Channel Power Amplifier 100 Wpc perfect working conditionAdcom Gfa-545 Ii 2 Channel Power Amplifier 100 Wpc perfect working condition $400.00
Adcom Model Gfa-555 High Current Power Amplifier, 200-Watts, Works, No ManualAdcom Model Gfa-555 High Current Power Amplifier, 200-Watts, Works, No Manual $499.99 Adcom Gfa-5800 Stereo Power Amplifier AmpAdcom Gfa-5800 Stereo Power Amplifier Amp $1,200.00
Adcom Gfa-7300 5 Channel AmplifierAdcom Gfa-7300 5 Channel Amplifier $225.00 Adcom Gfa 5006 Power Amp 6/5/4/3 Channels 50w-8ohm 75w-4ohm 175w Bridged x3 VgcAdcom Gfa 5006 Power Amp 6/5/4/3 Channels 50w-8ohm 75w-4ohm 175w Bridged x3 Vgc $285.00
💥 Adcom Gfa-535 Ii Stereo Power Amplifier High Current Vintage Audio Equipment💥 Adcom Gfa-535 Ii Stereo Power Amplifier High Current Vintage Audio Equipment $200.00 Adcom Gfa-535 stereo amplifier Tested!Adcom Gfa-535 stereo amplifier Tested! $149.99
New! 2025 Adcom Gfa-555Se Audiophile Edition Stereo Amplifier $1699New! 2025 Adcom Gfa-555Se Audiophile Edition Stereo Amplifier $1699 $1,699.00 Adcom Gfa-545 2 Channel Power Amplifier sounds great clean unitAdcom Gfa-545 2 Channel Power Amplifier sounds great clean unit $200.00
Adcom Gfa-535Ii High Current Power 60W x 2 Channel AmplifierAdcom Gfa-535Ii High Current Power 60W x 2 Channel Amplifier $90.00 Adcom Gfa-545 2 Channel Power AmplifierAdcom Gfa-545 2 Channel Power Amplifier $190.00
New Adcom Gfa-2535 4 Channel Power AmplifierNew Adcom Gfa-2535 4 Channel Power Amplifier $249.99 1979 Adcom Gfa-1A 200Wpc Stereo Channel Power Amplifier - Untested, Sold As-Is1979 Adcom Gfa-1A 200Wpc Stereo Channel Power Amplifier - Untested, Sold As-Is $149.95
Adcom Amplifier X 2 Enhancer & Tuner Gfa-2535 Gfa-555 Ii Rack AudiophileAdcom Amplifier X 2 Enhancer & Tuner Gfa-2535 Gfa-555 Ii Rack Audiophile $850.00 Adcom Gtp500Ii PreAmplifier & Gfa-535 Power Amplifier ComboAdcom Gtp500Ii PreAmplifier & Gfa-535 Power Amplifier Combo $349.99
Modified and Upgraded Adcom Gfa-535(changed from 2535) Power AmplifiersModified and Upgraded Adcom Gfa-535(changed from 2535) Power Amplifiers $549.00 Adcom Gfa-5300, Stereo/Surround 2 Channel Power Amplifier, Tested & Working.Adcom Gfa-5300, Stereo/Surround 2 Channel Power Amplifier, Tested & Working. $199.99
New ListingAdcom Gfa-7500 5 Channel Thx Power AmplifierNew ListingAdcom Gfa-7500 5 Channel Thx Power Amplifier $550.00 Rack Mount Adcom Gfa-6002 2-Channel Stereo Power AmplifierRack Mount Adcom Gfa-6002 2-Channel Stereo Power Amplifier $249.99
Adcom Gfa-5300 2 Channel High Current Power AmplifierAdcom Gfa-5300 2 Channel High Current Power Amplifier $250.00 Adcom Gfa-7500 5 Channel Thx Power Audio AmplifierAdcom Gfa-7500 5 Channel Thx Power Audio Amplifier $399.99
Adcom Gfa 5500 Stereo Amplifier -HAdcom Gfa 5500 Stereo Amplifier -H $500.00 Adcom 5500 2 Channel Power Amplifier,and Comes With Adcom Gcd-700 5-Disc Cd CompAdcom 5500 2 Channel Power Amplifier,and Comes With Adcom Gcd-700 5-Disc Cd Comp $300.00
Adcom Gfa-6002 2-Channel Bridgeable Stereo Amplifier Gfa6002 Power AmpAdcom Gfa-6002 2-Channel Bridgeable Stereo Amplifier Gfa6002 Power Amp $199.00 Adcom Gfa-7500 5 Channel Thx Power AmplifierAdcom Gfa-7500 5 Channel Thx Power Amplifier $375.00
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Prices current as of last update, 06/03/25 7:20am.
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