Audio Proz Service and Sales


Yamaha Q1027

Audio Proz Inv #: 53830

27 band Graphic equalizer. Input attenuation, high pass filer(40, 80). Transformer I/O. Best quality design. 8+

$ 360  Contact Us  

Yamaha GE-60

Audio Proz Inv #: 61273

10 band eq with spectrum display, audiophile quality, blackface, mic input, pink noise, (no mic), long throw faders, missing 4 knob caps, all clean/test, #8+

$ 288  Contact Us  

Wheatstone 4100C

Audio Proz Inv #: 60129

Parametric Equalizer-Preamp. Individual frequency, Octaves, DB controls. Master gain control. Functionally great condition, cosmetically good condition, minor wear on top and bottom chassis, #8+ condition.

$ 200  Contact Us  

UREI537

Audio Proz Inv #: 55212

Model 537. One-third octave equalizer. 27 band fader controls, EQ in/out switch, gain control, 2U space rack unit. Silverface. Terminal style connectors. Face is good condition, one minor 1 inch scratch at right edge. Faders have typical stiffness, have been cleaned, can be further cubed. Faders, caps, lettering all intact. 8+ condition. * Cap and coil * -Call us, we can restore your Urei!-

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UREI 535

Audio Proz Inv #: 55211

Dual graphic equalizer. 10 bands per channel. EQ in/out, overload LED, gain control per channel, barrier cable connectors, fader style EQ, TRS output, 2U rackmount silverface EQ, ringy filters, TLO 74, balance line terminal strips. 600 ohm transformers. Controls refurbished, low use. 8+ condition.

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Local customers, please do not come to the shop without calling ahead first - (617) 926-8020 - for an appointment, so that we can more efficiently help you with your equipment or sound recording needs.

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.


Technics SH-9010P

Audio Proz Inv #: 20801

Amazing low noise/diffusion, XLR or RCA, 2-band mono para EQ, cleaned, calibrated

$ 330  Contact Us  

Technics SH-9010

Audio Proz Inv #: 44468

Modified with special footswitch to select channel--Call for details! Very good #8+ condition. Professionally cleaned and serviced.

$ 388  Contact Us  

Technics SH-8038

Audio Proz Inv #: 21501

7 band stereo EQ, Nice basic HiFi EQ

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Technics SH-8017

Audio Proz Inv #: 63118

Stereo Graphic EQ, 7 band, black face plate, RCA in/out. Mute circuit was cut for better operation. Fully serviced, good condition, minor scratches on top cover #9- condition

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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  

Teac EQA-10

Audio Proz Inv #: 58226

10 Channel, Slim Line, Black, 1 Tape Monitor, 2 line in, Display. All serviced low use, #9+.

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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.


Teac EQ 20A-20

Audio Proz Inv #: 51310

Very sophisticated equalizer with spectrum display. Two line inputs, two tape dubbing in/outs. Excellent condition, fully serviced and guaranteed.

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TC Electronics TC 1140

Audio Proz Inv #: 47227

Parametric equalizer and preamp. High gain 40dB preamp with four band sweep EQ. XLR or phone in/out. Good #7 condition with severe scratches at rack mount. Professionally cleaned, serviced, tested.

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TC Electronic TC-2240

Audio Proz Inv #: 25092

stereo 4 band parametric

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Tascam PE-40

Audio Proz Inv #: 41228

4 Band Parametric. 4 Channel of EQ. Fully sweep range, excellent quality. RCA in/out but unit will do +14db, #8+ Condition, no rack rash, 1 incorrect knob top. Update P.S. grounding. Clean all controls, switches, 2 times. Aside of the fact these equalizers are on of the best ever designed, be aware, most PE-40 if roaded or excessively used do require in depth cleaning of all controls, switches, sometimes replacement of controls if damaged. This can require some time consuming dismantling. Some people want these in perfect working condition, others might find problems at bargain prices. We deal with the former, not with the damaged goods. All units are serviced, cleaned checked and come with a warrantee.

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Tascam PE-20

Audio Proz Inv #: 17726

Parametric equalizer in original box with packaging and owners manual. All phono ins/outs; high, mid, low pots with levels; 4 channels.

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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  


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.


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  

Symetrix SX201

Audio Proz Inv #: 17097

3 band parametric preamp with input level for acoustic instrument, 1/2 rack unit, hard to get quality piece. Mono. #9 condition.

$ 185  Contact Us  

Symetrix SX 201

Audio Proz Inv #: 17096

3 band EQ, cliplight, imput 30db for inst unit 1/2 rack space, balanced In. # 8 condition, minor wear to face edges.

$ 185  Contact Us  

Symetrix 552E

Audio Proz Inv #: 26002

2 channel, 5 band, parametric

While these are cool looking and functional units, they often suffer from cheap controls (same as Mackie boards actually) which become very intermittent or inaccurate at extreme settings. So if you need this for serious use, I would recommend something more reliably built. Try the Rane PE series, Tascam PE40, or Orban, which are all better. Modern EQs are done well by Behringer, ART, and dbx. They are all similar to the Symetrix but retail for less.

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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  

Sundholm 3104 31 band EQ

Audio Proz Inv #: 46259

Single rack space unit, XLR or phone in/out. Four band notch filter for PA de-ringing or recording. Excellent #9 condition with one very minor scratch near rack edge.

$ 280  Contact Us  


All Remotes are now 25% off or Free Shipping!!!  (Reel to Reel remotes excluded).


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

$ 240  Contact Us  

Sundholm 2103

Audio Proz Inv #: 14231

2-channel, 1 rack-space, good cosmetically, +/- Octave Bands, 3-notch filters(50-500Hz, 400-4KHz, 1K-10KHz), XLR & 1/4" I/O graphic output and notch input

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