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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-5300, Stereo/Surround 2 Channel Power Amplifier, Tested & Working.Adcom Gfa-5300, Stereo/Surround 2 Channel Power Amplifier, Tested & Working. $224.99 Adcom Gfa 5002 Power Amplifier 50Wpc Tested WorkingAdcom Gfa 5002 Power Amplifier 50Wpc Tested Working $155.98
Adcom Gfa-5800 Power Amplifier: Reconditioned/Recapped/Se rvicedAdcom Gfa-5800 Power Amplifier: Reconditioned/Recapped/Se rviced $842.81 Adcom Gfa-545 Stereo Power Amplifier - Tested & Working 500 Watts Serviced!Adcom Gfa-545 Stereo Power Amplifier - Tested & Working 500 Watts Serviced! $299.99
Adcom Gfa-2 Power Amplifier 200 Watts 50-60HzAdcom Gfa-2 Power Amplifier 200 Watts 50-60Hz $175.00 Adcom Gfa-5300 2 Channel Power Amplifier ServicedAdcom Gfa-5300 2 Channel Power Amplifier Serviced $195.00
Adcom Gfa-585Se Bridgeable High Current Power Amplifier Authorized DealerAdcom Gfa-585Se Bridgeable High Current Power Amplifier Authorized Dealer $3,790.00 Adcom Gfa-585se Stereo Power Amplifier - 600W Per Channel (4 Ohms)Adcom Gfa-585se Stereo Power Amplifier - 600W Per Channel (4 Ohms) $3,100.00
Adcom Gfa-535Ii High Current Power 60W x 2 Channel AmplifierAdcom Gfa-535Ii High Current Power 60W x 2 Channel Amplifier $95.00 Adcom Gfa-535 Stereo Power AmplifierAdcom Gfa-535 Stereo Power Amplifier $180.00
Adcom Gfa5400 power amplifierAdcom Gfa5400 power amplifier $250.00 New ListingAdcom Gfa - 5503 Amplifier in Full Working .New ListingAdcom Gfa - 5503 Amplifier in Full Working . $430.00
Adcom Gfa 5300 Stereo Power Amplifier Works / Right Channel DistortedAdcom Gfa 5300 Stereo Power Amplifier Works / Right Channel Distorted $159.95 Adcom Gfa-535 stereo amplifierAdcom Gfa-535 stereo amplifier $149.99
Adcom Gfa 6006 Power Amplifier 6-Channel Amp Audiophile 6x100W Class AbAdcom Gfa 6006 Power Amplifier 6-Channel Amp Audiophile 6x100W Class Ab $425.99 Adcom Gfa-5500 (200W/Ch) - Power AmpAdcom Gfa-5500 (200W/Ch) - Power Amp $499.99
New! 2025 Adcom Gfa-555Se Audiophile Edition Stereo Amplifier $1649New! 2025 Adcom Gfa-555Se Audiophile Edition Stereo Amplifier $1649 $1,649.00 Adcom Gfa-535 Power AmplifierAdcom Gfa-535 Power Amplifier $125.00
Adcom amplifier Gfa 555Adcom amplifier Gfa 555 $469.00 Adcom Gfa-5400 Stereo Power Amplifier In Outstanding Condition - Original OwnerAdcom Gfa-5400 Stereo Power Amplifier In Outstanding Condition - Original Owner $435.95
Adcom Gfa- 585Se Bridgeable High Current Stereo Power Amp Demo ModelAdcom Gfa- 585Se Bridgeable High Current Stereo Power Amp Demo Model $3,200.00 Adcom Gfa-7300 5 Channel Amplifier Tested!Adcom Gfa-7300 5 Channel Amplifier Tested! $299.99
Adcom Gfa-535 Ii 2 Channel Power AmplifierAdcom Gfa-535 Ii 2 Channel Power Amplifier $159.99 Adcom Gfa 5802 amplifier 300Wpc Class A/B Nelson Pass DesignedAdcom Gfa 5802 amplifier 300Wpc Class A/B Nelson Pass Designed $1,000.00
Rack Mount Adcom Gfa-6002 2-Channel Stereo Power AmplifierRack Mount Adcom Gfa-6002 2-Channel Stereo Power Amplifier $249.99 Adcom Gfa 7705 5 channel amplifier w/ original box - 200W/ channelAdcom Gfa 7705 5 channel amplifier w/ original box - 200W/ channel $899.95
Adcom Gfa-5400 Power Amplifier *Works, Looks and Sounds Great *One OwnerAdcom Gfa-5400 Power Amplifier *Works, Looks and Sounds Great *One Owner $350.00 Adcom Gfa-545 2-Channel Power Amplifier w/ Speaker Cables #52637Adcom Gfa-545 2-Channel Power Amplifier w/ Speaker Cables #52637 $199.00
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-545 Ii Power Amplifier 120V 600WAdcom Gfa-545 Ii Power Amplifier 120V 600W $274.99
Adcom 5500 2 Channel Power AmplifierAdcom 5500 2 Channel Power Amplifier $361.75 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 7607 7 channel amplifier175 watts per channel @ 4 ohms ,Tested RareAdcom Gfa 7607 7 channel amplifier175 watts per channel @ 4 ohms ,Tested Rare $700.00 Adcom Gfa-565 Mono Power Amplifier Tested & WorkingAdcom Gfa-565 Mono Power Amplifier Tested & Working $449.00
Adcom Gtp-350 Stereo Tuner/Preamplifier and Gfa 535Ii Power AmplifierAdcom Gtp-350 Stereo Tuner/Preamplifier and Gfa 535Ii Power Amplifier $320.00 New ListingAdcom Gfa-535 Ii 2 Channel Power AmplifierNew ListingAdcom Gfa-535 Ii 2 Channel Power Amplifier $129.00
Adcom Gfa-4702 2 Channel Amplifier AmpAdcom Gfa-4702 2 Channel Amplifier Amp $1,999.95 Adcom Gfa-535 stereo amplifier Tested!Adcom Gfa-535 stereo amplifier Tested! $149.99
Adcom Gfa 5400 Mosfet Stereo Power Amplifier Tested And Working S/N A541Fb04154Adcom Gfa 5400 Mosfet Stereo Power Amplifier Tested And Working S/N A541Fb04154 $99.99 Adcom Gfa-535 AmplifierAdcom Gfa-535 Amplifier $195.00
Adcom Gfa-555 Ii 200 Watt 2 Channel Power AmplifierAdcom Gfa-555 Ii 200 Watt 2 Channel Power Amplifier $475.00 Adcom Gfa7707 Multi-Channel Power Amplifier 200W per channelAdcom Gfa7707 Multi-Channel Power Amplifier 200W per channel $2,250.00
Adcom Gfa-7500 5 Channel Thx Power AmplifierAdcom Gfa-7500 5 Channel Thx Power Amplifier $500.00 Adcom Gfa 5400 Stereo Amplifier Tested Working!Adcom Gfa 5400 Stereo Amplifier Tested Working! $375.00
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