Audio Proz Service and Sales


McIntosh MQ-107

Audio Proz Inv #: 63637

Custom environmental EQ (#CV1107), EQ mode in/out, Low frequency compensation L+R (1-5), Hi frequency compensation L+R (1-5), Output level L+R -6dB +3dB, Removable cover for 7 board adjustments, Both left and right channels w/ removable caps, chrome plated cover w/ satin black base, cyan under cover, All letters intact, Does show minor scratches w/ small dust/pitting on right hand cover edge, Services, Replaced caps on power supply & changed hi op amp TLO72 hifi-grade for better clarity, Condition #8

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Audio Control Richter Scale Series III

Audio Proz Inv #: 70798

Half octave equalizer analyzer w/ sub sonic filter. Electronic crossover. Warble tone freq - 22.5, 31.5, 45, 63, 90, 125-250Hz. Adjustable bass eq - 22.5, 31.5, 45, 63, 90, 125Hz. Slide faders adjustable +/- 12dB. Low freq output level. Subsonic + Rumble Filters On/Off. External processor loop. #9 Condition. 


If you need repairs on this machine we can fix most of these if they're in good shape.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

ADC SS-325 Digital EQ

Audio Proz Inv #: 71301

Has problem with display board. Sudden fall, was virtually new. #7 condition.

Contact Us  Contact Us  

Sundholm 301

Audio Proz Inv #: 71744

Mint condition, as new, classic Sundholm X-over. With box and 2 year Warranty Card. High pass filter Q control; Low, Mid, High each have level and frequency Control; x10 switch; high bypass; main volume out pot; XLR and 1/4" ins/outs. Single rack space. An excellent electronic crossover!#9+ condition

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Tapco 2200 Graphic Equalizer

Audio Proz Inv #: 27327

Rackmount 3 space, may be in working condition (unknown), but needs cleaning. Stereo (20-40, 60, 120, 240, 480, 960, 1920, 3840, 7680, 10k-20k) 10 band EQ. L/R analog needle type input/output (switchable) meters. L/R fader type output controls. 1/4" unbalanced in/out. XLR balanced L/R in/out. A few faders broken off at end, but still functional mechanically. $10 take as is, or use for parts.

$ 10  Contact Us  


We leave "SOLD" items on our website for machines that we often repair and provide parts for. This is to give you an idea of the products we typically carry, and direct you to alternatives you may not know about - we often have substitutes for out-of-stock parts, and are happy to recommend workarounds and different solutions to common problems.


Furman SG-10 knobs R1378549 FS3001

Audio Proz Inv #: 50433

We have NOS knobs available for Furman SG-10 and others. Dual controls $12, single controls $8.

$ 12  Contact Us  

Furman SG-10 Equalizer Fader

Audio Proz Inv #: 72298

With red knob. (3) available. New, #10 condition. $12 each.  (Used in Para-graphic equalizer)

$ 12  Contact Us  

DG211J IC

Audio Proz Inv #: 47774

Special audio attenuator IC for DBX and others.

$ 18  Contact Us  

SAE 2900 and others

Audio Proz Inv #: 54579

100k dual ganged fader used as frequency control on the 2900. 2 available, #9

$ 24  Contact Us  

SAE 2900 and others

Audio Proz Inv #: 54580

50K faded used as lo/hi frequency control in 2900. 2 available, #9 condition. $24 each.

$ 24  Contact Us  

SAE 2900

Audio Proz Inv #: 54582

Black face plate only. Excellent condition, no rack rash. Ving minor dings at edges, one tiny scratch at face. Low use, all lettering perfect. minor wear around edges, #9.

$ 28  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.


Symetrix 532 E

Audio Proz Inv #: 63993

Dual 31 Brand EQ, Top board has broken faders and some minor issue with noisy OP AMP. Needs Replacements board is best easy fix. Unit is in excellent cosmetic condition #9, but failed 1 channel. Will sell for faders or board. 

$ 48  Contact Us  

Summit EQP-200a output amp module

Audio Proz Inv #: 51880

for balanced line drive. Black color, 1" square. New.

$ 60  Contact Us  

Realistic Stereo Parametric EQ

Audio Proz Inv #: 40905

3 band eq Runs on 9v supply, or AA batteries.

$ 80  Contact Us  

Ibanez GE3100

Audio Proz Inv #: 42832

1 rack unit, 31 band equalizer. +/-12 or +/-6db range, will do +14dbm out. Phone in/out. #9 condition, all cleaned and calibrated, low use time. New lower price!

$ 90  Contact Us  

AGI 11 Band

Audio Proz Inv #: 63723

Stereo unit,  in walnut compact box, odd compact design. 20 Hz, EQ level. Pro level use but RCA type connectors #8+ condition.

$ 108  Contact Us  

DBX 2031

Audio Proz Inv #: 64000

31 band with DBX limiting VCA and noise reduction circuit. High quality design. Cleaned, Calibrated, known low use. #8+ condition 

$ 118  Contact Us  


We are a very different kind of shop. To help ensure a smoother experience please read our letter about our current shop policies.

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.


DBX 2031

Audio Proz Inv #: 64002

31 Band EQ with III NR and limiter. Faders are perfect. #9 condition. Cleaned, calibrated, low use. 

$ 118  Contact Us  

Ibanez GE3100

Audio Proz Inv #: 42831

1 rack unit, 31 band equalizer. +/-12 or +/-6db range, will do +14dbm out. Phone in/out. #9 condition, all cleaned and calibrated, low use time.

$ 120  Contact Us  

Teac EQA-10 Graphic Equalizer

Audio Proz Inv #: 72307

Stereo 10-Band EQ with DynamicLED 10 Band Display, 2 Line inputs + slim line 1 tape input, basic cleaning and testing, Condition #9 Virtually no use time

$ 128  Contact Us  

Korg KEC-42

Audio Proz Inv #: 17896

EQ/Compander, 4 channel EQ, midrange sweeping and side chain expander/compressor etc., stereo compressor

$ 130  Contact Us  

Ashly SC-70

Audio Proz Inv #: 48132

3-way crossover with modified ADD board for subwoofer out; effectively now a 4-band crossover. Completely cleaned, serviced, tested. Good #7 condition with much wear at rack edges, but all controls are tight and clean.

$ 130  Contact Us  

ART EQ341

Audio Proz Inv #: 57765

Dual channel 15 band graphic EQ. *Single rack space. Balanced XLR Ins/Outs, unbalanced RCA Ins/Outs +/-6db or +/-12db levels. Level and bypass per channel.  3 year warranty New in Box  Call for better pricing 

$ 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.


ART EQ341

Audio Proz Inv #: 70530

Dual channel 15 band graphic EQ. *Single rack space. Balanced XLR Ins/Outs, unbalanced RCA Ins/Outs +/-6db or +/-12db levels. Level and bypass per channel.  3 year warranty New in Box 

$ 148  Contact Us  

Tascam EX-20 / Tascam PE-20

Audio Proz Inv #: 17725

Tascam EX-20 Expander, 4 channel, XLR/Phono I/Os, Bus I/O (phono), phono dir out, Trim/Aux/Aux pan/Pan each with own volume / Tascam PE-20, Parametric EQ, all phono I/Os, High/Mid/Low pots with levels, 4 channel - - **$150 for the pair**

$ 150  Contact Us