Audio Proz Service and Sales


dbx Mini-Pre

Audio Proz Inv #: 42402

Mint condition, single channel design with 12AX7 vacuum tube, -20db pad, phase switch, and 48v phantom supply. Peak and power LEDs. 60dB gain and -infinity to +10dB of output level. XLR microphone input, 1/4" TS line input, balanced 1/4" TRS and XLR outputs Table top design, very portable.

$ 80  Contact Us  

NAD PP-1

Audio Proz Inv #: 59056

Basic as new demo high quality phono preamp. 9/10 condition.

$ 88  Contact Us  

ART

Audio Proz Inv #: 60035

USB dual Pre. 2 channel. Computer interface. Project series. 10 condition. New.

$ 98  Contact Us  

Nakamichi TA-3A

Audio Proz Inv #: 63461

Receiver converted into PREAMP. Black faceplate. Phono, CD, Video 1, Video 2, Tape 1, and Tape 2 inputs. 10 tuner presets. Built on (non-original) volume knob, with cut hole for LED indicator. #7 condition 

$ 98  Contact Us  

APT 201

Audio Proz Inv #: 52708

100 ohm input impedance, tested good, no mods

$ 100  Contact Us  


We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock.


Behringer Bass V-Amp

Audio Proz Inv #: 45016

New stock.

$ 108  Contact Us  

B&K PT3 Series II Tuner Preamp

Audio Proz Inv #: 71220

5 line inputs, (no phono) with original remote control, (face plate lettering is dim)  Be careful in sleep mode (button), powered on unit may look to be off ! # 7 condition.

$ 118  Contact Us  

ART USB phono plus

Audio Proz Inv #: 71196

Hi Quality Phono pre and computer I/O, Line / phono input select. 1/8" headphone monitor with level adjust. RCA ,s/pdif & optical connections. USB or extermal power power supply (includes USB cable but not external supply-thoes can be purchased seperately) 

$ 118  Contact Us  

APT moving coll preamp, model 201A

Audio Proz Inv #: 61188

Set for 100Ω impedance but this version can be reset to as low as 20Ω, low noise spec, no capacitor update but unit performs perfect, low use, QC check, #9

$ 128  Contact Us  

Pyramid SEA 2500

Audio Proz Inv #: 63815

Basic Preamp. This is an excellent quality product, with high quality controls, switches. Input switching IC is same as expensive products. Low noise op amp for phono. 3 band eq. Some ground mods were done. rack mount. #9 condition

$ 128  Contact Us  

Apt Holman 2014

Audio Proz Inv #: 61507

Mc pre-amp board. Complete. Good condition. Tested and working. Has original caps. #9

$ 148  Contact Us  


We offer expert time-saving advice on repairing many types of home and studio equipment, as well as consulting for product and recording issues, at a fair and reasonable cost.  For complex matters, we sometimes must charge a small technical fee.  If we can help solve your repair problem or technical conundrum, give us a call.  (617)926-8020.


Ashly SC-44 "Keyboard Input Processor"

Audio Proz Inv #: 51396

4-channel mixer with 3-band sweepable equalizer per channel, PA send, and separate monitor send. 3-rack space unit. Excellent condition, cleaned, serviced, tested.

$ 160  Contact Us  

Pyramid SEA-2500x

Audio Proz Inv #: 45446

Tuner, Aux, CD, Phono, Mic inputs. Bass, Mid, and Treble EQ controls. Made minor modifications to make perfect level and EQ match between channels. New stock, QC'ed.

$ 185  Contact Us  

Creek OBH-8se

Audio Proz Inv #: 63596

MM Phono preamp, updated power supply, replaced power cord, checked for noise - floor is excellent, Condition #9

$ 188  Contact Us  

Rotel RQ-970 BX Phono Pre

Audio Proz Inv #: 71215

MM & MC inputs, Simple slimline design using super low noise AD744 OP amp. about 6db of gain extra for MC.  Audiophile grade components. Bench test QC, all OK. #9 condition 

$ 188  Contact Us  

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  

Audio Access PX-600

Audio Proz Inv #: 52812

preamp control unit only, requires special cable/connector, tested ok, condition #9

$ 200  Contact Us  


We have been selling and repairing professional and consumer audio equipment for over 40 years. (Read some of our customers testimonials here)

We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock. 

Customers outside of the US, please note that international shipping can be costly (US Post $16 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.


APT Holman Moving Coil Phono Preamp

Audio Proz Inv #: 61575

Set for 100 ohm impedance, but can be changed per customer request. (15db gain modified).  All caps updated / recapped, noise check, EQ check.OK #9 condition

$ 240  Contact Us  

APT Moving Coil Preamp

Audio Proz Inv #: 45882

#201/202. Moving coil preamp for Holman. Set for 100ohm input impedance, but can be changed per customer request. All caps updated, with noise check and EQ check. New old stock.

$ 240  Contact Us  

Fisher 50-PR

Audio Proz Inv #: 27660

Phono preamplifier/equalizer, Mint Condition Cosmetically, Mono Vintage device in brown bakalite box with brass face plate, for 78 equalization, unit has powersupply upgrades, cleaned and serviced.

$ 265  Contact Us  

Carver CT-24 Preamplifier Tuner

Audio Proz Inv #: 72286

Black face/rack mount, digital AM/FM 10 presets, excellent tuner, use of head phone jack stops audio output by design, FM battery memory OK, re-soldered power supply board and minor service updates, cleaned and calibrated, cleaned all connectors, 1 Phono, 3 Line-ins, 3 Tape loops, NO REMOTE, Condition #8+

$ 268  Contact Us  

Parasound C/PT-1000R

Audio Proz Inv #: 27851

Tuner Preamplifier, Very good tuner, Digital Display, Excellent condition, PS and ground mods to eliminate hum, modified headphone out to be super quiet

$ 280  Contact Us  

Dynaco Pat 5

Audio Proz Inv #: 27128

Excellent Condition. 3 Tape ins, spare EPL external processor loop, 2 speaker switching capable. Many modifications and updates, most capacitors in audio circuits and upgrade some power supply capacitor clean all controls switch.

$ 280  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.


Adcom GTP-450

Audio Proz Inv #: 70288

Excellent basic design, two tapes, 1 aux, no phono, excellent FM, presets. All clean/calibrated. with remote control.  #9 condition

$ 288  Contact Us  

Sumo 0620 Stereo Pre-amp

Audio Proz Inv #: 21849

Class A circuitry design pre-amp, very clean sounding unit, very good condition black one-sapce rack mount.

$ 300  Contact Us