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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 Gtp-400 Pre-Amp Preamplifier Tuner Processor Am/FmAdcom Gtp-400 Pre-Amp Preamplifier Tuner Processor Am/Fm $48.00 Adcom Gtp-500Ii 2 Channel Pre-Amp/Processor AmplifierAdcom Gtp-500Ii 2 Channel Pre-Amp/Processor Amplifier $200.00
Adcom Gtp-350 Stereo Preamp Preamplifier Tuner Gtp350 *Tested Works*Adcom Gtp-350 Stereo Preamp Preamplifier Tuner Gtp350 *Tested Works* $99.99 Adcom Gtp-500 Ii Preamp Vintage Used No Remote Tuner Not WorkingAdcom Gtp-500 Ii Preamp Vintage Used No Remote Tuner Not Working $199.00
New ListingAdcom Gfp-565 PreamplifierNew ListingAdcom Gfp-565 Preamplifier $350.00 Vintage Adcom Gfp 555 Preamplifier Cleaned/Updated W/ New Parts(See Description)Vintage Adcom Gfp 555 Preamplifier Cleaned/Updated W/ New Parts(See Description) $375.00
Adcom Gtp-450 🔊 2 Channel Tuner Stereo Preamplifier Pre-Amp -Free ShippingAdcom Gtp-450 🔊 2 Channel Tuner Stereo Preamplifier Pre-Amp -Free Shipping $199.95 Adcom Gtp 400 Stereo Preamp NiceAdcom Gtp 400 Stereo Preamp Nice $350.00
Adcom Gfp-565 Preamplifier Pre Amp W Gfa-545Ii Stereo Power Amplifier Read!Adcom Gfp-565 Preamplifier Pre Amp W Gfa-545Ii Stereo Power Amplifier Read! $449.99 Adcom Gtp-740 A/V Preamplifier & Tuner Powers on and Functions workAdcom Gtp-740 A/V Preamplifier & Tuner Powers on and Functions work $230.00
Adcom Gtp-450 2 Channel Pre-Amp/Processor Amplifier with remoteAdcom Gtp-450 2 Channel Pre-Amp/Processor Amplifier with remote $179.95 Mint Boxed Adcom Gsp-560 Pre-Amplifier Home Theater Amplifier with Original BoxMint Boxed Adcom Gsp-560 Pre-Amplifier Home Theater Amplifier with Original Box $163.51
Adcom Gtp-450 Stereo Tuner/Preamplifier Parts/ Repair Only Tested for Power ReadAdcom Gtp-450 Stereo Tuner/Preamplifier Parts/ Repair Only Tested for Power Read $79.99 Adcom Gtp-500Ii 2 Channel Pre-Amp/Processor Amplifier Needs Repair!Adcom Gtp-500Ii 2 Channel Pre-Amp/Processor Amplifier Needs Repair! $115.00
Adcom Gtp-400 & Gfa-535 Ii Pre-Amp Preamplifier + Amp Tuner Processor Combo DealAdcom Gtp-400 & Gfa-535 Ii Pre-Amp Preamplifier + Amp Tuner Processor Combo Deal $220.00 New ListingAdcom Gtp-450 Stereo Tuner/PreamplifierNew ListingAdcom Gtp-450 Stereo Tuner/Preamplifier $37.65
Adcom Gfp-815 Stereo Preamplifier with RemoteAdcom Gfp-815 Stereo Preamplifier with Remote $550.00 Adcom Gtp-350 Stereo Tuner/Preamplifier and Gfa 535Ii Power AmplifierAdcom Gtp-350 Stereo Tuner/Preamplifier and Gfa 535Ii Power Amplifier $349.00
Adcom Model Gfp-565 Stereo Preamplifier - Used but in Excellent ConditionAdcom Model Gfp-565 Stereo Preamplifier - Used but in Excellent Condition $300.00 Adcom Gfp-555 Pre Amplifier PreamplifierAdcom Gfp-555 Pre Amplifier Preamplifier $174.99
Adcom Gtp-500 Ii 2 restoration recap service kit repair filter capacitor rebuildAdcom Gtp-500 Ii 2 restoration recap service kit repair filter capacitor rebuild $135.00 Adcom Gtp-500 Stereo Pre-Amp/Processor Amplifier-See DescriptionAdcom Gtp-500 Stereo Pre-Amp/Processor Amplifier-See Description $114.99
Adcom Gtp 750Adcom Gtp 750 $550.00 Adcom Gtp-502 Stereo Tuner/PreamplifierAdcom Gtp-502 Stereo Tuner/Preamplifier $220.00
Classic Adcom Gfp-710 Stereo PreamplifierClassic Adcom Gfp-710 Stereo Preamplifier $495.00 Adcom Gtp-500Ii Tuner/preamplifier W/ Box & Some CordsAdcom Gtp-500Ii Tuner/preamplifier W/ Box & Some Cords $150.00
Adcom Gtp-600 5 Channel Tuner Pre-Amplifier no remoteAdcom Gtp-600 5 Channel Tuner Pre-Amplifier no remote $160.00 Adcom Gtp-350 Preamplifier/Tuner TestedAdcom Gtp-350 Preamplifier/Tuner Tested $249.00
Phono Preamp for Turntable Suca Audio 6J2 Vacuum Tubes Mm Riaa PhonographPhono Preamp for Turntable Suca Audio 6J2 Vacuum Tubes Mm Riaa Phonograph $86.45 Nice Adcom Gfa-5802 Stereo Amplifier Original Owner's Manual & Warranty CardNice Adcom Gfa-5802 Stereo Amplifier Original Owner's Manual & Warranty Card $49.99
Adcom Gfp-565 PreamplifierAdcom Gfp-565 Preamplifier $350.00 Adcom Model Gfp-565 Solid State High Performance Stereo Preamplifier TestedAdcom Model Gfp-565 Solid State High Performance Stereo Preamplifier Tested $499.00
Adcom Gfp-750 Preamplifier - *Very Good Condition*Adcom Gfp-750 Preamplifier - *Very Good Condition* $650.00 Adcom Gtp-500 Ii 2 Channel Pre-Amp / Processor Amplifier - Used - Powers onAdcom Gtp-500 Ii 2 Channel Pre-Amp / Processor Amplifier - Used - Powers on $189.99
Adcom Model Gtp-600 Surround Sound Tuner / PreamplifierAdcom Model Gtp-600 Surround Sound Tuner / Preamplifier $140.00 Adcom Gfp-715 Stereo Preamplifier in Black in 120V- 230V, Made in ThailandAdcom Gfp-715 Stereo Preamplifier in Black in 120V- 230V, Made in Thailand $850.00
Adcom Gsa-700 amplifier/preamp/processo r Looks Nice (See Video & Photos)Adcom Gsa-700 amplifier/preamp/processo r Looks Nice (See Video & Photos) $143.00 Nobsound Ns-10P Mini Vacuum Tube Stereo Preamp HiFi Home Audio Pre-AmplifierNobsound Ns-10P Mini Vacuum Tube Stereo Preamp HiFi Home Audio Pre-Amplifier $74.99
Vintage Adcom Gtp-502 PreamplifierVintage Adcom Gtp-502 Preamplifier $250.00 Adcom Gtp-350 Preamplifier /Tuner -Adcom Gtp-350 Preamplifier /Tuner - $199.99
Adcom Gtp-880 Preamp Tuner works Fine but has a bad displayAdcom Gtp-880 Preamp Tuner works Fine but has a bad display $295.00 Adcom Stereo Components: Tuner, Pre Amp Enhancer, Power Amp, EqualizerAdcom Stereo Components: Tuner, Pre Amp Enhancer, Power Amp, Equalizer $1,275.00
Adcom Gtp-350 preamplifier tuner (For Parts Or Repair)Adcom Gtp-350 preamplifier tuner (For Parts Or Repair) $85.00 Adcom Gtp-550 Preamplifier Audio ProcessorAdcom Gtp-550 Preamplifier Audio Processor $110.00
Adcom Gtp-600 Surround Sound Tuner Preamplifier Gtp600 Home Movie Theatre DolbyAdcom Gtp-600 Surround Sound Tuner Preamplifier Gtp600 Home Movie Theatre Dolby $269.00 Adcom Gtp-550 Preamplifier Audio Processor -For Restoration / Does Not Power On.Adcom Gtp-550 Preamplifier Audio Processor -For Restoration / Does Not Power On. $120.00
Adcom Gtp-500 Am/Fm Tuner Preamplifier, Tested WorkingAdcom Gtp-500 Am/Fm Tuner Preamplifier, Tested Working $200.00 Adcom Gtp-450 Tuner/Preamp (Ez5001564)Adcom Gtp-450 Tuner/Preamp (Ez5001564) $199.99
Adcom Gtp-700 Home Theater Preamplifier Tuner - Original Remote, Manual & BoxAdcom Gtp-700 Home Theater Preamplifier Tuner - Original Remote, Manual & Box $250.00 Adcom Gfp-1A Preamplifier (Only)Adcom Gfp-1A Preamplifier (Only) $300.00
Adcom Gfp-1 Stereo Preamplifier High QualityAdcom Gfp-1 Stereo Preamplifier High Quality $350.00 Adcom Gtp-600 Home Theater Stereo Preamp Preamplifier No Remote Works Great!Adcom Gtp-600 Home Theater Stereo Preamp Preamplifier No Remote Works Great! $145.00
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Prices current as of last update, 05/14/25 3:50pm.

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