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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-350 Preamplifier/Tuner TestedAdcom Gtp-350 Preamplifier/Tuner Tested $249.00 Classic Adcom Gfp-710 Stereo PreamplifierClassic Adcom Gfp-710 Stereo Preamplifier $495.00
Adcom Gtp-600 Surround Sound Tuner Preamplifier - As IsAdcom Gtp-600 Surround Sound Tuner Preamplifier - As Is $169.00 Adcom Gfa-545 Ii Power Amplifier & Adcom Gtp-400 Stereo Preamplifier Vg+ - Read!Adcom Gfa-545 Ii Power Amplifier & Adcom Gtp-400 Stereo Preamplifier Vg+ - Read! $152.50
Adcom Gtp500Ii PreAmplifier & Gfa-535ll Power Amplifier ComboAdcom Gtp500Ii PreAmplifier & Gfa-535ll Power Amplifier Combo $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
Adcom Gtp-450 Stereo Tuner/PreamplifierAdcom Gtp-450 Stereo Tuner/Preamplifier $169.99 Adcom Gtp-450 Stereo Tuner/Preamplifier 2-Channel w/ Owner’s Manual.Adcom Gtp-450 Stereo Tuner/Preamplifier 2-Channel w/ Owner’s Manual. $183.08
Vintage Adcom Gfp 555 PreamplifierVintage Adcom Gfp 555 Preamplifier $90.00 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 $250.00
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 $219.99 Adcom Gtp-350 Am/Fm Stereo Tuner Preamplifier Pre-AmpAdcom Gtp-350 Am/Fm Stereo Tuner Preamplifier Pre-Amp $134.99
Adcom Digital Gtp-740 Ac-3 Tuner/Preamplifier - Needs Repair - Turns On - UsedAdcom Digital Gtp-740 Ac-3 Tuner/Preamplifier - Needs Repair - Turns On - Used $79.99 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-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-400 Pre-Amp/Processor Amplifier ~ Tested, works well ~ See PhotosAdcom Gtp-400 Pre-Amp/Processor Amplifier ~ Tested, works well ~ See Photos $189.00
Adcom Gtp-500 Ii 2 Channel Pre-Amp/Processor AmplifierAdcom Gtp-500 Ii 2 Channel Pre-Amp/Processor Amplifier $219.00 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
🔥【Pro Serviced】Mint/Box Adcom Gtp-750 Digital Av Tuner/Preamp!5.2 Out💥Guaranty🔥【Pro Serviced】Mint/Box Adcom Gtp-750 Digital Av Tuner/Preamp!5.2 Out💥Guaranty $560.96 Adcom Gtp 400 Stereo Preamp NiceAdcom Gtp 400 Stereo Preamp Nice $350.00
Adcom Gtp 500 Stereo Preamp ( Read description)Adcom Gtp 500 Stereo Preamp ( Read description) $199.99 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 Gfp 565 Preamp, White FaceplateAdcom Gfp 565 Preamp, White Faceplate $400.00 Adcom Gtp-350 preamplifier tunerAdcom Gtp-350 preamplifier tuner $140.00
Adcom Gtp-600 Home Theater Preamplifier Tuner - Original Remote, Manual & BoxAdcom Gtp-600 Home Theater Preamplifier Tuner - Original Remote, Manual & Box $250.00 Adcom Gtp-550 Preamplifier Audio ProcessorAdcom Gtp-550 Preamplifier Audio Processor $110.00
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 (No Remote)Adcom Gtp-450 (No Remote) $125.00
Adcom Model Gfp-565 Solid State High Performance Stereo Preamplifier TestedAdcom Model Gfp-565 Solid State High Performance Stereo Preamplifier Tested $499.00 Adcom Gfa-535 2 Channel Power Amplifier & Gtp400 Preamp Tuner Bundle Org BoxesAdcom Gfa-535 2 Channel Power Amplifier & Gtp400 Preamp Tuner Bundle Org Boxes $299.99
New ListingAdcom Gtp-450 Stereo Tuner/Preamplifier Parts/ Repair Only Tested for Power ReadNew ListingAdcom Gtp-450 Stereo Tuner/Preamplifier Parts/ Repair Only Tested for Power Read $79.99 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
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-500Ii Tuner/preamplifier W/ Box & Some CordsAdcom Gtp-500Ii Tuner/preamplifier W/ Box & Some Cords $150.00
Adcom Gtp-500 Am/Fm Tuner Preamplifier, Tested WorkingAdcom Gtp-500 Am/Fm Tuner Preamplifier, Tested Working $149.99 Adcom Gtp-600 Tuner Preamplifier Used Tested & Works.Adcom Gtp-600 Tuner Preamplifier Used Tested & Works. $275.00
Adcom Gfp-710 Preamp And Gft-555 Tuner.Adcom Gfp-710 Preamp And Gft-555 Tuner. $450.00 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
Adcom Gtp-600 5 Channel Tuner Pre-Amplifier no remoteAdcom Gtp-600 5 Channel Tuner Pre-Amplifier no remote $160.00 Adcom Gfp- 710Adcom Gfp- 710 $250.00
New ListingAdcom Gfp-915 W/remote. Works Perfect Can Coordinate Demo Or Video Of WorkingNew ListingAdcom Gfp-915 W/remote. Works Perfect Can Coordinate Demo Or Video Of Working $650.00 Adcom Gtp-450 2 Channel Pre-Amp/Processor Amplifier with remoteAdcom Gtp-450 2 Channel Pre-Amp/Processor Amplifier with remote $179.95
Adcom Gtp-350 Stereo Tuner/Preamplifier and Gfa 535Ii Power AmplifierAdcom Gtp-350 Stereo Tuner/Preamplifier and Gfa 535Ii Power Amplifier $320.00 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 Gtp-830 Preamp. Remote w/new batteries. Tested & Working.Adcom Gtp-830 Preamp. Remote w/new batteries. Tested & Working. $235.00 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 Gfp-565 PreamplifierAdcom Gfp-565 Preamplifier $350.00 Adcom Gfp-555 Preamp Ex+ CondAdcom Gfp-555 Preamp Ex+ Cond $260.00
New ListingAdcom Gtp-450 Stereo Tuner/Preamplifier Tested & Working S/N Az03774New ListingAdcom Gtp-450 Stereo Tuner/Preamplifier Tested & Working S/N Az03774 $99.99 Adcom Stereo Tuner/ Preamplifier Gtp-450 Tested Works No RemoteAdcom Stereo Tuner/ Preamplifier Gtp-450 Tested Works No Remote $179.99
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Prices current as of last update, 04/18/25 5:50pm.

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