Audio Proz Service and Sales


DBX 208 Rack

Audio Proz Inv #: 51462

With 9 units of 411 cards. #9 Condition. Not serviced.

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KLH TNE 7000A

Audio Proz Inv #: 57213

Phonograph de-click and pop reduction device. Rack mount, Rev 5 modification, TLO75 Op amps,  Nice Face. condition #8+

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Behringer DeNoiser SNR2000

Audio Proz Inv #: 33843

Multiband Denoiser, 2-Channel Single-Ended Noise Reduction System. Multiband frequency analysis and processing. TAC (Transient Attack Control) dynamic filters respond accurately to signals with fast attacks. Auto-filter circuitry for automatic sliding filters. Integrated IRC expander circuitry. Adjustable cut-off frequency and release time. Noise reduction of up to 80 dB. Dual-mono or true stereo couple function.


Unit Possibly SOLD, paperwork not in file

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Burwen 1201A

Audio Proz Inv #: 25981

Noise Reduction, 2 rack space, Modified by AP to reduce hiss very carefully without excessive high frequency loss. Works well on tape and FM signal, 4136 opamp gives slight tubaphonic veiled sound. A somewhat archaic device but still usable as a substitute Dolby decoder or to warm up the audio character of excessively bright recordings.

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DBX 154

Audio Proz Inv #: 17825

Noise reduction system, 2 rack space, 4ch, all RCA in/outs. No rack hardware included.

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FYI, Around the database you will often see us describe the condition of units on a scale of 1-10. #10 would mean the product is new from one of our suppliers, such as Behringer, Audio Technica, etc. #9 means the product is in perfect condition but is used, #8 implies there are some minor cosmetic scratches but unit is mechanically perfect, and so on and so forth.


DBX 208

Audio Proz Inv #: 25465

w/10x411 Modules, the power chassis get $100 plus alone, each module if sold separately gets $80-$120. Our shop owner might make a dial for the complete unit, it is low use equipment in storage for many years that came out of the shop owners personal studio and in total is in B+ condition.

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Sony NR-500

Audio Proz Inv #: 24024

Silver Face, Practically mint condition Dolby C noise reduction

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Symetrix 511

Audio Proz Inv #: 14218

Noise reduction system, 1 rack space, 2 channel noise filter, XLR in outs phone in/out. Used as AP engineering sample.

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Teac DX-8

Audio Proz Inv #: 17434

Noise reduction module, accessory for 80-8 tape recorder, bag, manual, 16 RCA cables, no warranty card. Known to be in good condition. This unit is priced on request depending on service required. $250 (Tested appears to work, minimal repair, clean up time is spent) - $400+ range (Full restoration everything repaired, all relays cleaned (there are 16 of them!!) tested, calibrated, etc.) These are 30 years old, it is almost a requirement to really perfect. Once serviced correctly these are very reliable and great performing machines. We also do a modification in the circuit which reduces the circuit noise another 4 to 6 db and also reduces the crosstalk, simulsync, playback at high frequency by almost 10 db. A significant improvement. $160 for the modification.

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DBX 155

Audio Proz Inv #: 17824

Decliner Noise Reduction, 2 Rack Space, input level matching, RCA Jacks, 2 channel, simultaneous encode/decode

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DBX 463X

Audio Proz Inv #: 17830

Noise Gate. Box, Packing, Manual. 1/2 Rack Space. Accessory pack.

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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.


DBX II 128

Audio Proz Inv #: 28047

Compressor, Dynamic Range Enhancer, Noise Reduction system. Front panel features: Above threshold/linear switch, level adjust, compress/expand ratio control, pre/post enhance, rec/play/bypass selection, tape/DBX disc selection, play level match control. Unit designed for cassette or reel to reel. Excellent cosmetic condition. Completely cleaned, serviced, and calibrated.

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DBX 900 Series

Audio Proz Inv #: 53365

Rack unit, equipped 8 DBX411 units. Equipped with 8 DBX41 units. 8 RCA Rec i/o. 8 RCA rec i/o. -3 RU. 7+ Condition, all modules tested and calibrated QC'd. Needs TLC upon purchase.

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DBX 263A

Audio Proz Inv #: 16100

De-Esser with rack ears

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DBX 410

Audio Proz Inv #: 53303

For 900 series racks. #9 Condition. Tested, calibrated.

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DBX 941

Audio Proz Inv #: 53364

For 900 series racks. Type II noise reduction. 2 Channel encode. #9 Condition.

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DBX 180

Audio Proz Inv #: 52723

intact but needs repair, selling for parts or a rebuild

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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.


DBX -224X-DS

Audio Proz Inv #: 42247

Type II tape noise reduction system. LED metering.

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Teac AN-80

Audio Proz Inv #: 24983

Classic Mid 70s teac noise redux w/dolby, hooks up between tape deck and receiver/preamp, super spec calibration, excellent fidelity

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Behringer Multiband Denoiser SNR2000

Audio Proz Inv #: 27973

Professional, all purpose, single ended noise reduction system with TAC dynamic filter and auto filter. (sn:61066704)

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DBX 224X-DS Type II

Audio Proz Inv #: 45910

Single space rackmount stereo tape noise reduction system. Has switching and jacks for two tape decks, including bypass and dubbing. Record and play level controls. Unbalanced and RCA phono connectors. Serviced, cleaned, and tested OK (rack ears added), in mint condition with original box and packing.

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DBX 124

Audio Proz Inv #: 15359

Basic DBX noise reduction system

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Burwin TNE-7000

Audio Proz Inv #: 27814

Click and Pop eliminator, excellent condition, modified - call for details

The TNE is rackmount and in like new condition, but I only sell the Audio proz modified version. (This is a highly in demand piece that usually has a waiting list) This mod makes the unit work remarkably better. The same is with the 1201A, which is in a slightly worn condition, but certainly very acceptable. This unit also has a modification. See our listing # 60892I was the chief line tech and production assistant at Burwin research and even though my modification is simple and clever, it took a year to design. I myself was desperate for a better, wider applicable performance. The unit works better with many phono preamp cartridge combinations. I do prefer Stanton and Audio Technica cartridges because these guarantee honest bandwidth and correct stereo separation which is critical to best nick pop elimination. The Stanton 680 or 681EEE or AT 311 EP or 440ML is excellent. Indeed the ART phono preamp with proper cartridge loading switches and level control will optimize the TNE performance. I am on the side of laboratory standard ideals and not audio-“phoolish”, intentionally off RIAA standard preamp designs, which can be sometimes interesting sounding, but is usually just strange equalization tricks to impress the consumer. In my opinion its best to have an out board equalization to fix the many and varied equalization “opinions” existing on the stereo-mix of the record. See all about the complete TNE mod service here: https://www.audioproz.com/AP.php?Article=46

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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.


SAE 5000A

Audio Proz Inv #: 55950

Phonograph nick and pop reducer. Does not have preamp. INR SYS INVERT/DEFEAT, TAPE MONITOR, SENSITIVITY FADER. AP mod done to improve control calibrating and sensing and filtering the pop or click. Also board has been ruggedized with solder and better caps in power supply. Black brushed aluminum face with wood sides. Minor modification to sensitivity control to lessen audible blanking of audio. Fully serviced, low hours use. 9 + condition. It works good but TNE or Burwen 7000 is a superior design and with my mods it's as good or better than any computer attempt. I worked with Burwen and have upgraded a superior TNE. I am a little famous for this as well as APT products.

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DBX 158

Audio Proz Inv #: 45702

8 channel rackmount unit with DBX 410 noise reduction modules. RCA in/outs and multipin connector. Condition: 9

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