We sell two hardware systems for noise reduction.  Unlike computer-based sofware system, these operate in real time.  You do not have to record onto a computer, then process, and finally listen to or burn a CD.  Both hardware noise reduction systems can be adjusted and used as you listen and they operate in two steps.  The first step reduces crackle and ticks.  This can be the occasional click or pop, or a continuous "frying bacon" as from 78 rpm records.  Once this type of noise has been reduced, what is left can generally be described as "hiss." So, the next stage of noise reduction is usually hiss reduction.  Sometimes, one genre of noise is more prevalent of bothersome to the user.  So, it is not written in stone that both processors be obtained.  However, a complete system would include both and provide the maximum result.

A complete CEDAR noise reduction system would consist of a Duo declickle in series with a Duo auto dehiss unit. CEDAR units operate in the digital domain and require additional hardware to digitize the analogue program material, and also to transform the digital output back to analogue.  Both expensive and modestly priced Analogue to Digital (A/D), and Digital to Analogue (D/A) converters are available for this purpose.  However, you can often use equipment you already have.  For instance, if you have a DAT machine or other digital recorder, it probably has digital inputs and/or outputs.  One of these units could be used to feed the CEDAR units.  If your intention is to feed the output into a computer for more editing, you may have a sound card that has digital inputs.  You could go directly from the CEDAR units into your computer. Thus, it is possible to sometimes use CEDAR units without any extra purchases.

The Esoteric Sound and Rek-O-Kut units are strictly analogue, and thus can be easily integrated into an ordinary hifi system, or professional system via RCA input and output jacks.  A complete noise reduction system would consist of a Surface Noise Reducer connected in series to a DEHISSER.  As before, one may also purchase either unit if only one form of noise was found more annoying.  For 78 rpm reporoduction, the DEHISSER provides the most benefit.

In evaluating these systems, it is necessary to consider the psychoacoustic factor.  When listening to recordings with high frequency noise, we also perceive more highs than are actually present. We tend to associate the two. When the noise is removed, we perceive that the highs are also removed.

A complete audio restoration system consisting of the Re-Equalizer, Surfact Noise Reducer, and DEHISSER would provide the majority of features of the, now discontinued, Packburn Noise Reducer.  That unit sold for $2,600.00 in 1988.  The cost of our system costs exactly half of that and has better performance plus much less audio distortion.

EVALUATION CD.  We now have available two CDs that demonstrates the performance of the noise reduction devices we sell.  One CD demonstrates the performance of the Esoteric Sound Surface Noise Reducer, and another that demonstrates the performance of the Rek-O-Kut DEHISSER.  Both also show the effectiveness of CEDAR products.  Each is available for $3.00 ppd.  This can be deducted from the purchase price of any unit you purchase.  For more information:

Click here for Esoteric Sound Surface Noise Reducer Demo CD                                                  Click here for Rek-O-Kut Dehisser Demo CD

 REK-O-KUT DE-HISSER

Denoise Records and Tapes       REMOVES THE NOISE, NOT THE MUSIC!       Denoise Film Soundtracks

 THREE NOISE REDUCTION SYSTEMS IN ONE
for use with modern stereo LP records, old mono LP records, all tape recordings, and vintage 78s
A perfect companion to follow the SURFACE NOISE REDUCER

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.  Easily installed thru the external tape monitor circuit or your preamplifier/receiver or via the SuperConnector.  A furniture-grade walnut case is available.  Send for our demo CD.  Please include $3.00 ppd.

GROOVE WALL SELECTOR,  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. Our added circuitry removes the rumble and not the bass.  For more details, click here.

HISS REMOVAL is accomplished not by a commonly used, variable hi-cut circuit, but by filtering individual octaves of sound within the spectrum of the program material.  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.

Listen to LP, RCA LSC-2433	Listen to LP, Concert Disc CS-25	Listen to 78, COLUMBIA 67837	Listen to 78, BRUNSWICK 2827	Listen to 2-track tape RCA BCS-31

SPECIFICATIONS:

Frequency Response: 20-20 kHz, +/- 0.5 dB
Signal to Noise Ratio: >90 dBA
Distortion: 0.05%
Noise Reduction: 10 dB
Min. Audio Response: 2.5 kHz
Max Signal: 4 Volts RMS
Controls: Input, Lo-Cut, Dehiss, Bypass
Low Cut: 40 Hz, 80 Hz
Power source: 120/240 VAC, 50/60 Hz
Dimensions: 19" x 1-3/4" X 7"
Weight: 5.5  lbs
Accessories: Universal Wood Cabinet ($125.00)

FEATURES

* 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 synch.
* 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.
 

For more detailed information, look at the operating manual.

PRICE: $450.00 (IL Res. add 7.25% IST) + $12.00 shipping

REMOVE CRACKLE FROM RECORDINGS
The Esoteric Sound Surface Noise Reducer Says: Good-By to clicks, pops and crackle

 - eliminates or reduces these noises from most types of phonograph records.  Its circuit can identify and remove many clicks and pops found on Lp's and even 78's and other vintage records.  It will cause minimum degradation to either audiophile or vintage records and is suitable for inclusion into advanced audiophile systems where phonograph records are used.  While use of a graphic equalizer or "scratch filter" to remove ticks and scratches is somewhat effective, such filters reduce or eliminate the highs found on records.  The Esoteric Surface Noise Reducer acts only on the click or pop without effecting program material.  The Surface Noise Reducer is also very effective in reducing ignition noise from FM radio broadcasts.   Easily installed thru the external tape monitor circuit or your preamplifier/receiver or via the SuperConnector.  A furniture-grade walnut case is available.  Send for our 44-track demo CD.  Please include $3.00 ppd.

Listen to LP, RCA LSC-1984	Listen to BLUES 78

SURFACE NOISE REDUCER FEATURES:  

* In "BYPASS" mode, signal is hard-wired input to output - introduces nothing to any audiophile unit.
* 70-90% effective on Lp's and 15-30% effective on most vintage records.
* Unique "distortion limiting" circuit prevents unit from acting on music.
* Suitable for home, professional CD mastering, or broadcast use.
* Film coupling capacitors assure low TIM and transparent sound.
* Works with phono, tape outputs - any source.
* Universal Wood Cabinet available ($125.00).
* Professional quality design and construction.
* 19" rack mount standard at no extra cost.
* Gold-plated RCA connectors.
* Very low distortion & noise.
* Stereo or mono

   CLICK FOR: MANUAL   CLICK FOR: REVIEWS     CLICK FOR SPEC SHEET 

Price:  $425.00 (IL Res. add 7.25% IST) + $8.00 Shipping

CEDAR DUO SERIES OF AUDIO RESTORATION MODULES

CEDAR, THE WORLD STANDARD IN NOISE REDUCTION - THERE IS NO BETTER!

CEDAR is world renowned for effectiveness in removing noise from sound sources. CEDAR is used by the world's leading record companies, including BMG, Abbey Road, and Skywalker Sound. The result of a collaboration between the British National Sound Archive and Cambridge University, they digitally remove most noise without affecting original sound. Each unit operates in real time, you do not have to process files on a computer. These devices have SPDIF and AES/EBU inputs and outputs and require a digital source, such as, a DAT machine or a low-cost A to D converter in order to operate. Please call for your pricing.   

The Duo declickle processor removes scratches, clicks and crackle, such as “frying bacon) sounds from your sound sources.  Simple dial adjustment removes noise more effectively than any instrument ever made.  List Price (1/08) is $7107.00 (IL Res. add 7.25% IST) + $49.00 Shipping

The Duo auto dehiss processor removes background hiss from tapes and discs without removing the music.   It can actually remove hiss that is significantly below the softest of the program material.  List Price (1/08) is $7107.00 (IL Res. add 7.25% IST) + $49.00 Shipping  

A complete system consists of a digital source, such as a DAT machine, and both processors connected in the same series as presented here.

CLICK FOR: REVIEWS

Listen to LP, RCA LSC-2433	Listen to 78,COLUMBIA 67837

Also look at our computer software.  Computer software  provides editing and often, powerful noise reduction to remove clicks, crackle and hiss from recordings.