Audio Proz Service and Sales


Adcom GTP-450

Audio Proz Inv #: 70494

AM/FM tuner/preamp. 14 presets. Bass/Treble + Balance Controls. Inputs: CD, Tuner, Tape/Tape 2, Aux. External processor loop. 1/4" headphone jack. Remote control RC-45 included. FM aligned and glue removed. #8 Condition. Note: No phono input.  

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Adcom GTP-400

Audio Proz Inv #: 42302

FM/AM tuner, phono, CD, tape 1/2. Balance bass and treble controls. Unit has full service, including all cleaning and FM tuner alignment. Minor scratches on cover, some finger wear on controls, missing 1 memory button. #8 condition.

$ 200  Contact Us  

Adcom GFP-750

Audio Proz Inv #: 27515

Minimalist version, no tone controls - volume only, balance control, processor loop, stereo/reverse/mono control, cd balanced input + RCA, balanced main outs + 2 RCA, cleaned controls, excellent conditon - with remote

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Adcom 6FP 555 II

Audio Proz Inv #: 63473

Basic preamp. Top quality phono (with correct ground layout)! Audiophile tone controls, only accent extreme high and low. 5 inputs, bad obvious light scratch at switch, #8- condition. 

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ADA MB-1 Guitar Preamp

Audio Proz Inv #: 59229

Super clean and low use condition. Original high quality tubes, Nationals made in China. These are super low noise version tubes REV 2.05. Low use time was used in personal studio, not roaded. 9/10 condition, very minor rack rash at holes, recent battery cleaned and calibrated.

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Need an APT unit serviced or modified? Vince, the owner of Audio Pro, ran the production line at APT for many years, and has decades of experience working with APT products. Read all about our APT Holman service and mods here. Also read about the APT Moving Coil Phono Mod Here.


Accuphase C200

Audio Proz Inv #: 27016

Excellent preamp - one of the best ever made!!! All special design. Ground lifted all input. RF protected/shielded. Tape 1 to 2 copy. Tone controls are switched resistor/eq circuits. High variable frequency turnover. 3 auxiliary ins, tuner in, 2 phonos. Super quality phono preamp. With gain controls. Ultra quiet. Serviced, callibrated, cleaned and excellent condition.

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A-PA1 Solid State Stereo Phono Pre-amp

Audio Proz Inv #: 27173

Stereo Phono preamp.

$ 24  Contact Us