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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-545 Stereo Power Amplifier. Clean Power - 100 Wpc.Adcom Gfa-545 Stereo Power Amplifier. Clean Power - 100 Wpc. $260.00 Adcom Mosfet Gfa 5400 Stereo Power Amplifier - 2 Channels - Made In JapanAdcom Mosfet Gfa 5400 Stereo Power Amplifier - 2 Channels - Made In Japan $274.95
Adcom Gfa-5800 Stereo Power Amplifier AmpAdcom Gfa-5800 Stereo Power Amplifier Amp $1,200.00 Adcom Gfa-555ii 2-Channel Stereo Power Amplifier - 200 Wpc - Cleaned - TestedAdcom Gfa-555ii 2-Channel Stereo Power Amplifier - 200 Wpc - Cleaned - Tested $999.95
Adcom Gfa-5300, Stereo/Surround 2 Channel Power Amplifier, Tested & Working.Adcom Gfa-5300, Stereo/Surround 2 Channel Power Amplifier, Tested & Working. $179.99 Adcom Gfa 5400 2 Channel Stereo Power Amplifier Outstanding!Adcom Gfa 5400 2 Channel Stereo Power Amplifier Outstanding! $349.95
New Adcom 5500 2 Channel Power AmplifierNew Adcom 5500 2 Channel Power Amplifier $749.99 Adcom Gfa-6002 2-Channel Bridgeable Amplifier Gfa6002 Authorized dealerAdcom Gfa-6002 2-Channel Bridgeable Amplifier Gfa6002 Authorized dealer $399.00
Adcom Gfa-7500 5 Channel Thx Power AmplifierAdcom Gfa-7500 5 Channel Thx Power Amplifier $375.00 Adcom Gfa-5500 2-Channel Power Amplifier 200W Rms Per ChannelAdcom Gfa-5500 2-Channel Power Amplifier 200W Rms Per Channel $479.95
Adcom Amplifier Gfa-5500 200w X 2 Ch Power AmpAdcom Amplifier Gfa-5500 200w X 2 Ch Power Amp $499.99 Adcom Gfa-7300 5 Channel Amplifier Tested!Adcom Gfa-7300 5 Channel Amplifier Tested! $299.99
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 $699.00 Adcom Model Gfa 5802 Stereo Power Amplifier Amp 300W Channel W/Box Tested NelsonAdcom Model Gfa 5802 Stereo Power Amplifier Amp 300W Channel W/Box Tested Nelson $999.99
Adcom Gfa 535 Stereo Power Amplifier, 2- ChannelAdcom Gfa 535 Stereo Power Amplifier, 2- Channel $99.00 Adcom Gfa 5002 Power Amplifier 50Wpc Tested WorkingAdcom Gfa 5002 Power Amplifier 50Wpc Tested Working $124.98
Adcom Gfa-5200 2 Channel Power Amplifier Tested/ WorkingAdcom Gfa-5200 2 Channel Power Amplifier Tested/ Working $165.00 Adcom Model Gfa 5500 2 Channel 200W Stereo Power Amplifier Amp, Excellent!Adcom Model Gfa 5500 2 Channel 200W Stereo Power Amplifier Amp, Excellent! $549.95
Adcom Gfa 555 Power Amp and Gfp 555 Preamp ampAdcom Gfa 555 Power Amp and Gfp 555 Preamp amp $500.00 Adcom Gfa-555ms Bridgeable High Current Stereo Power AmpAdcom Gfa-555ms Bridgeable High Current Stereo Power Amp $1,250.00
Adcom amplifier Gfa 555Adcom amplifier Gfa 555 $499.00 Adcom Gfa-1A Power Amplifier- Bench Checked, Cleaned, Lubed, Fully TestedAdcom Gfa-1A Power Amplifier- Bench Checked, Cleaned, Lubed, Fully Tested $289.99
New ListingAdcom Gfa-535L Stereo Power Amplifier Tested/WorkingNew ListingAdcom Gfa-535L Stereo Power Amplifier Tested/Working $199.00 Adcom Gfa-6002 2-Channel Bridgeable Stereo Amplifier Gfa6002 Power AmpAdcom Gfa-6002 2-Channel Bridgeable Stereo Amplifier Gfa6002 Power Amp $199.00
New! 2025 Adcom Gfa-555Se Audiophile Edition Stereo Amplifier $1699New! 2025 Adcom Gfa-555Se Audiophile Edition Stereo Amplifier $1699 $1,699.00 New ListingAdcom Gfa-545 Ii 2 Channel Power Amplifier 100 Wpc perfect working conditionNew ListingAdcom Gfa-545 Ii 2 Channel Power Amplifier 100 Wpc perfect working condition $350.00
Adcom Gfa-555ii 2-Channel Stereo Power Amplifier - Serviced - Cleaned - TestedAdcom Gfa-555ii 2-Channel Stereo Power Amplifier - Serviced - Cleaned - Tested $899.95 Vintage Adcom Gfa-535 2 Channel Power Amplifier Stereo High Current ReadVintage Adcom Gfa-535 2 Channel Power Amplifier Stereo High Current Read $119.00
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-555 Power Amplifier 200/8 High Current (Mint Condition)Adcom Gfa-555 Power Amplifier 200/8 High Current (Mint Condition) $875.00
Adcom Gfa-555 Stereo Power AmplifierAdcom Gfa-555 Stereo Power Amplifier $375.00 Adcom Gfa-535 Stereo Power Amplifier Excellent Made In UsaAdcom Gfa-535 Stereo Power Amplifier Excellent Made In Usa $142.50
Adcom Gfa-535 Ii Power AmplifierAdcom Gfa-535 Ii Power Amplifier $200.00 Adcom Gfa-555 Stereo Power Amplifier, Professional Cleaned, Serviced And Tested.Adcom Gfa-555 Stereo Power Amplifier, Professional Cleaned, Serviced And Tested. $399.00
Adcom Gfa-4702 2 Channel Amplifier AmpAdcom Gfa-4702 2 Channel Amplifier Amp $1,499.95 Adcom Gfa - 5503 Amplifier in Full Working .Adcom Gfa - 5503 Amplifier in Full Working . $550.00
Adcom Gfa-535 Ii Stereo Power Amplifier (Read)Adcom Gfa-535 Ii Stereo Power Amplifier (Read) $169.95 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 $219.99
Adcom Gfa-545 2 Channel Power AmplifierAdcom Gfa-545 2 Channel Power Amplifier $145.00 Adcom Gfa-2535 Stereo Power Amplifier 4 Channel*5Adcom Gfa-2535 Stereo Power Amplifier 4 Channel*5 $160.00
Adcom Gfa-565Se 2 Channel Power Amplifier - Legendary!Adcom Gfa-565Se 2 Channel Power Amplifier - Legendary! $1,175.00 Adcom Gfa 7807 Power Amplifier BeastAdcom Gfa 7807 Power Amplifier Beast $2,250.00
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Prices current as of last update, 07/21/25 8:20am.
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