Audio Proz Service and Sales


Rotel RTC-940 AX

Audio Proz Inv #: 41699

Tons of control, 8+ FM digital memory. Aux, CD, Tape 1/2 inputs. No phono inputs. Slim-line, black color (Adcom look), with remote. Excellent, #9 condition with box.

$ 300  Contact Us  

ADCOM GTP-740 A/V Preamp & Tuner

Audio Proz Inv #: 72820

Comes with remote. RCA & S Video inputs include: DVD, Digital RF, Digital Aux, LD, VCR, Video Aux, CD, Tape, Tuner. NO PHONO INPUT. RCA outs include: Front, Rear, Center, Subwoofer.  Many Surround mode settings. 14 FM preset slots. High quality blue boards & Capacitors. Unit has many cool functions, it is recommended that interested customers research these functions online before purchase to see if this unit will fit their needs. Unit has seen very little use time, cosmetically excellent. Faceplate, covers, all controls and connectors are super clean with only minor signs of use (light surface scratching, wear/ staining from age and light use.) #9 Condition.

$ 325  Contact Us  

Nikko Beta 20

Audio Proz Inv #: 70940

Pre-amp is audiophile grade. 19" Rack mount. Black w/ white lettering. 1 Rack unit. Input: Tape 1, Tape 2, Aux, Tuner, Phono 1 + 2, (Phono switch mm or mc) Super quality class A FET design. Serviced, caps replaced on turn circuit and tested. Good condition. 3 scratches top edge of face panel. (can be touched up) #9 condition.  

$ 348  Contact Us  

Yamaha PG1

Audio Proz Inv #: 72736

Full feature unit with effect send levels IN/OUT Guitar Preamp with Guitar distortion, multiband EQ, 2 channel switching, double spring reverb, (modified to make rugged and dampened spring pan for cleaner brighter spring sound, nice shorter delay / decay spring). Original spring pan. 1/4"  & XLR outs. #8+ condition

$ 360  Contact Us  

SAE Mark 1B

Audio Proz Inv #: 43246

Stereo pre and equalizer. Inputs: Phono 1 & 2, Aux 1 & 2, tuner. 3 tape monitor loops, 2 speaker sets, balance and gain controls, 7 band equalizer. Cap + Coil circuit. Class A Transistor design. Resoldered boards at equalizer circuit. #8- condition with minor scratches on top cover. Power switch glued in place.

$ 680  Contact Us  


We are presently operating on an APPOINTMENT ONLY basis. Please call us first at (617) 926-8020 to schedule an appointment before you come into the shop for repairs, rentals, product recommendations, consultations, or anything other than minor purchases.


Phase Linear 4000 autocorrelation preamplifier

Audio Proz Inv #: 63872

Discrete transistor phono preamp. Has discrete version 4 channel decoder board and Phase Linear updated / best version auto correlator.  RCA's in excellent condition.  SUPER SPEC CALIBRATED ! channel balance +/- 1db or better (one of the most accurate units we have seen) 90% Of all power supply caps replaced & upgraded at boards and main supply. Upgraded grounding on boards and ruggedized solder at board connectors.   ( By design this version 4000 does not lower the audio out signal to totally off at the back panel RCA. A very low level audio signal will always exist. The unit can be modified with a few resistor changes to be totally off if requested at sale)   Low use unit, face and knobs #9 condition

$ 680  Contact Us  

APT Holman Pre Amp

Audio Proz Inv #: 72905

Pristine cosmetics and fully functional, Audio Pro Modified level III, capacitor updates throughout all boards, relay replaced, upgraded -super clean operation, All controls and switches multistage cleaning, soldering ruggedized throughout especially any connectors and grounds. Ground mods completed, eliminate any low level buzz or DC bleed. Full calibration and mods level III, Excellent cosmetics only light scratches on top cover. #9 condition

$ 988  Contact Us