Audio Proz Service and Sales


DBX RX9

Audio Proz Inv #: 3162

TEAC Noise reduction, needs relays and work on circuit board which we do here.

$ 200  Contact Us  

DBX DUAL 155

Audio Proz Inv #: 8130

2 sets rack. Cleaned all front panel switches, play and rec. Calibrated controls, calibrated for 0 dB. Checked calibration .5 dB difference max between channels. Checked crosstalk, 3 mv internal between record in and play out max. Mint Condition.

$ 550  Contact Us  

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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Rocktron Hush 11X

Audio Proz Inv #: 15166

Single ended noise reduction, 1/2 rack space, very popular device to quiet guitars or bass/keyboards

$ 85  Contact Us  

DBX 124

Audio Proz Inv #: 15359

Basic DBX noise reduction system

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Re: International Shipping: We ship internationally often and have yet to encounter a problem or complaint. We are very careful to test the equipment before it’s packed and then to double box the machine with added protection when needed for front panels, etc. We are not amateurs or an ebay store; we know these machines very well and know what it takes to get them to you safely. We use USPS priority internationally which seems to be the cheapest. If you prefer another carrier (you should know who delivers to your area reliably) please let us know. Also please be aware of any tariffs that you may be responsible for upon pick up on your end. International shipping may be expensive but we will make sure it is not a headache on top of the cost. PLEASE NOTE THAT SHIPPING INTERNATIONALLY WILL BE A MINIMUM OF $16 EVEN FOR SMALL PARTS.


DBX 263A

Audio Proz Inv #: 16100

De-Esser with rack ears

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DBX 172

Audio Proz Inv #: 16489

Dual channel expander and gate with balanced ins and outs. Like new with original box and manual, used only a few times as a rental demo. The best gate ever made!

$ 320  Contact Us  

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 154

Audio Proz Inv #: 17825

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

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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. 

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 158

Audio Proz Inv #: 22598

8-channel Noise reduction System! Has 8 DBX 410 cards. Mint condition.

$ 360  Contact Us  

Symetrix 511A

Audio Proz Inv #: 23052

Modified w/ ground lift switch. Excellent Cosmetic Condition!

$ 280  Contact Us  

Sony NR-500

Audio Proz Inv #: 24024

Silver Face, Practically mint condition Dolby C noise reduction

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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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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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DBX 158

Audio Proz Inv #: 25466

8-channel Noise reduction System! w/ 5x410 and 4x411

$ 340  Contact Us  


If you are having trouble finding parts, enter the name into our search bar at the top of the page. Please be aware there is a minimum $4-$6 to ship any part. International orders will be $14-$16 to ship for anything larger than an envelope. Shipping costs are non negotiable, so please, PLEASE do not ask for a part, or for us to search for, or quantify a part if you cannot pay for the shipping.


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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Furman QN-4A

Audio Proz Inv #: 27005

1/4" phone in/out/key. No xlr. Ground lift switch. Threshold release depth controls. 4 channels. 1 space chassis w/rack mount. Power supply ruggedized by Audio Proz. Serviced, cleaned, and QC OK.

$ 110  Contact Us  

Tascam DX-4D

Audio Proz Inv #: 27287

DBX Noise Reduction rack unit. 4 ch, 16 RCA phono jacks on rear, 4 each (input, output, encode out, encode in), selectable 4-channel NR. Unit cleaned throughout. Excellent condition, minor scratches.

$ 200  Contact Us  

Fisher NR-500

Audio Proz Inv #: 27755

Dolby D super NR similar to Dolby B but further reduces noise hiss, best to set play level calibration very high to overcum low level signals which may be excessively nose reduced. Can be used as Aphex type presence enhancer, excellent 2 channel calibration (made originally for Nakamichi and JVC).

$ 160  Contact Us  

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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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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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 228 Dynamic range expander.

Audio Proz Inv #: 28044

One space rack mount. Unit performs disc encode as well as tape encode/decode.

$ 200  Contact Us  

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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