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Rek-O-Kut - De-Hisser


Rek-O-Kut - DE-Hisser

The Rek-O-Kut De-Hisser is actually three products in one: a background hiss reducer, a left/right groove wall selector for mono records, and a low frequency noise rumble filter. It can be used in real time with unlike the time wasted using a computer. This product is also great for motion picture work. Because it has zero latency, there is no loss of voice sync. The DE-HISSER is easily installed thru the external tape monitor circuit or your preamplifier/receiver or via the SuperConnector.

A GROOVE WALL SELECTOR is a must for collectors or restorers of mono records. This switch permits you to select the least noisy groove wall of a mono record. In addition, the Rek-O-Kut De-Hisser features a unique circuit which cancels out rumble and similar noises that are common to both groove walls. Other switching circuits (left only or right only) permit low frequency noises (rumble) to be heard unimpeded. Rek-O-Kut's added circuitry removes the rumble and not the bass.

HISS REMOVAL is not accomplished by a common variable, in most cases a manual, or hi-cut circuit. These 1940's technology filters remove either the music or cause an annoying pumping sound of the background noise. The DE-HISSER uses several automatic, music-controlled filters within the spectrum of the program material.

Thus, you do not notice it do anything, accept make the music much more noise-free. Background hiss is one of the most annoying noises produced by tapes, cassettes, and records from 78 rpm thru vintage mono LPs to more modern stereo LPs. Using analogue filtering, it introduces absolutely no CEL telephone-like sounds commonly obtained with digital techniques and computer programs. Gain 10 dB of Signal to Noise Ratio.

THE LO-CUT removes annoying low frequency noises that can muddy the sound of records all vintages. This switch can select two amounts of low frequency noise attenuation. The 40 Hz position will suffice for many noise-plagued LP records and 78s, while the 80 Hz position may prove useful with old acoustic records, records with hum, rumble, severe warps, or records requiring severe bass boost.


  • Works with all recording formats. 2 units required for 4 channel tapes, or Binaural LPs.
  • No pumping of background hiss with either music or spoken word recordings.
  • Works with film soundtracks in real-time. No loss of lip sync.
  • Quality components and film capacitors for audiophile sound.
  • Connects to hifi systems like an ordinary graphic equalizer.
  • Works with modern audiophile, or vintage records.
  • No digital audio artifacts, even when over-used.
  • Gold-plated RCA connectors.


Frequency Response
20-20 kHz, +/- 0.5 dB

Signal to Noise Ratio
>90 dBA


Noise Reduction
10 dB

Min. Audio Response
2.5 kHz

Max Signal
4 Volts RMS

Input, Lo-Cut, Dehiss, Bypass

Low Cut
40 Hz, 80 Hz


Power source
120/240 VAC, 50/60 Hz

H 19" x W 1.75" x D 7"
(H 483mm x W 45mm x D 178mm)

5.5 lbs (2.5kg)

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