2 channel encode decode. DBX 224 Type noise reduction. In 1/2 box design, very compact. All cleaned, calibrated. 9 condition.
4 channel DBX with rack ears. Cleaned, tested, minor cover scratches. 8+ condition
Unit will do 4 channel encode or decode or 2 channel simultaneous 2 channel decode. Tested, calibrated. Unit requires minor calibration set up
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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Auto correlator noise reduction system with Rev 6 modifications, low noise TLO75 IC update, some capacitor update. Dynamic range recovery system. Wood case, vintage knobs. Low frequency calibration. 9/10 excellent condition.
We have been selling and repairing professional and consumer audio equipment for over 40 years. (Read some of our customers testimonials here).
Phonograph de-click and pop reduction device. Rack mount, Rev 5 modification, TLO75 Op amps, Nice Face. condition #8+
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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
(2) with 2 holes 5/8 inch apart with hardware. 8+ condition.
Autocorrlator noise reduction system. Dynamic range recovery. Peak unlimiter/down Expander, Autocorrelator. Low freq, calibration controls. Many modifications,crucial capacetor update for better performance and channel to channel spec. ground MOD for super low noise.
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.
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
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.
with rack ears, SN:430309. Converted FV to always on dbx #9+ condition
4 channel noise reduction, this version has no FV cable. Converted FV to dbx always on. With rack ears. #8 condition
Nick and Tick reduction 2 space rack Unit Modified with control for variable window of tick & pop capture. SPECIAL ENGINEERING MODEL (Rev 5). Stereo phone jack In & Out . Retro Knobs #8+ condition
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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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Gain reduction, Compressor/ Expander. Tested OK. All switches and controls triple cleaned. Replaced regulator and upgraded main filter cap for regulation. Fully functional unit. Top cover has a fair amount of scratches. Faceplate mostly clean with some signs of use and light scratching. W/ AC adapter (120V AC 60hz 9w, 15v DC 300mA) #8- Condition
