Dolby B noise reduction unit. Correctly restored, carefully calibrated and tested. Very good #8+ condition with some very minor scratches on faceplate and slightly darkened back panel jacks. We can also service and supply parts for these units!
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.
#10 condition. NEW. SALE
We have been selling and repairing professional and consumer audio equipment for over 40 years. (Read some of our customers testimonials here).
Ultra-Compact 2 Channel 1/4 TRS hum destroyer. Dual mono or stereo. (Identical item available)
Ultra-Compact 2 Channel 1/4 TRS hum destroyer. Dual mono or stereo. (Identical item available)
Ultra-Compact 2 Channel 1/4 TRS hum destroyer. Dual mono or stereo. (Identical item available)
4 channel expander/gate. Balanced XLR and 1/4" in/outs. Parametric side chain eq filter (built in). Fully tested and cleaned. Light rack rash at screw holes on rack ears, #9 condition, excellent. Popular with studio and live sound. With manual.
Professional, all purpose, single ended noise reduction system with TAC dynamic filter and auto filter. (sn:61066704)
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All Remotes are now 25% off or Free Shipping!!! (Reel to Reel remotes excluded).
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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Rack-mount noise reduction unit. Modified updated version with better high frequency filter, is less obvious for tape hiss reduction. Condition: 9
Stereo hiss, noise reduction. For use with tape decks, and records. This is a Modified version that allows more of the high frequencies and music ambiance to be retained when the filter operates. Rack mount 110/220 VAC. Much nicer operation in modern use. Minor but obvious face scratch, #7+ condition
Rev.6 version, all updates, TL075 op amp, Super Spec Machine. Very minor face edge scratch, Rack-mount design, no rack rash #9- condition
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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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Dolby B. Outboard unit. RCA in/out. Encode or decode (not simultaneous) with level controls, test tone calibration, trim controls on front panel. Calibrated internally to +/- 1db tracking. 9/10 condition.
Type II tape noise reduction system. LED metering.
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Basic DBX noise reduction system
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Unit will do 4 channel encode or decode or 2 channel simultaneous 2 channel decode. Tested, calibrated. Unit requires minor calibration set up
(1 in stock) Low use, mint condition. No rack mount ears. In original boxes! #9 Condition.
type 1 unit, 2 channels A+B, noise reduction in/out switches, front panel: rec/play calibration, level adjustment, rear panel: console input/output tape input/output, no rack ears, condition #9
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Type I noise reduction. NO RACK EARS. Inputs: to/from console, to/from tape deck. Switchable voltage 120/240. Front Panel: calibration level rec/play. Channel A&B in/out switches for rec/play. 9/10 condition.
type 1 unit, 2 channels A + B, noise reduction in/out switches, front panel: rec/play calibration level, rear panel console: input/output, tape input/output, no rack ears! condition #9 no rack ears!