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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 reproduction, the DEHISSER provides the most benefit.  You can also obtain a good noise reduction system by combining the CEDAR Duo Declickle and the Rek-O-Kut Dehisser into a system. 

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, Surface 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   

You can download the complete DEHISSER demo CD in MP3 format.  It takes about 4 minutes if you have hi-speed Internet.  Just right click on the link and choose to save on your computer.

                                                                                                                   Download complete Rek-O-Kut Dehisser Demo CD


 REK-O-KUT®  DE-HISSER

WHAT THE "AUDIOPHILE" MAGAZINES IGNORE:

"I am VERY VERY pleased...highly suggesting these pieces of equipment…( De-Hisser and Surface Noise Reducer)… for anyone that plays and collects 78,s and radio transcriptions"

"WOW ! - I've been having fun for the past few days...really impressive results on some Louis Jordan and Rosetta Tharpe Decca 78's"

"...your groove wall selector...has bailed me out many times.  You did a superb job of making that feature available"

 "It is really nice to enjoy those early sounds ...without any kind of “overfiltering” or digital artifacts!"

"I am particular impressed by the clean sound from the Rek-O-Kut De-Hisser for playback of 78’s!

"The combination of the ROK’s RE-EQ and dehisser together...is just dynamite!"

"The Dehisser works well with my 78's. I'm very satisfied with it"

"I already use the Dehisser for a while now and it's fantastic!"

"the dehisser... seems to fit the bill" 

Denoise Any Record Or Tape      
REMOVES THE NOISE, NOT THE MUSIC!       While You Listen - No Computers

 THREE NOISE REDUCTION SYSTEMS IN ONE
for use with modern stereo LP records, old mono LP records, all tape/wire recordings, and vintage noisy 78s
A perfect companion to follow the SURFACE NOISE REDUCER
Easily connects to most hifi systems

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.  Use it in real time.  No time wasted with computers.  Great for motion picture work.  With zero latency, no loss of voice synch.  Installation is most convenient thru the external tape monitor circuit or your preamplifier/receiver.  If none, we suggest getting one of our phono preamps, connecting to your amplifier's AUX input.  A  furniture-grade walnut case is available, look under ACCESSORIES.   Send for our 44-track demo CD.  Please include $3.00 for postage.

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 not accomplished by a common variable, and in most cases manual,  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, but 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.

Listen to LP,
RCA LSC-2433

Listen to LP,
Concert Disc CS-25

Listen to 78,
COLUMBIA 67837

1937 NBC
transcription

1950 ABC transcription

Listen to 1938 Fibber McGee transcription

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
Latency: zero
Power source: 120/240 VAC, 50/60 Hz
Dimensions: 19" x 1-3/4" X 7"
Weight: 5.5  lbs
Accessories: Universal Wood Cabinet ($110.00)

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: $275.00  (IL Res. add 8.25% IST) + $16.50 (with case, $22.00) 

Non-USA shipping:  Canada - $48.00( w/case - $55.00); England/Australia - $74.00(w/case - $86.00); Europe/Japan - $65.00(w/case - $74.00); Russia - $78.00(w/case - $92.00). The USPO advertise, but does not promise, 6 - 10 days delivery time,  insurance value is $200.00.


REMOVE TICKS, POPS & CRACKLE FROM RECORDINGS
The Esoteric Sound Surface Noise Reducer Says: Good-Bye To Noise

THE ANALOGUE SOLUTION

"It is a great product for my LP collection...and it works"

"an unlistenable record...is now very enjoyable to listen to straight through. Thank you"

and from Europe: "It works great, I’m not only pleasantly surprised – I’m absolutely astonished and amazed how good it is"

 - 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.    Installation is most convenient thru the external tape monitor circuit or your preamplifier/receiver.  If none, we suggest getting one of our phono preamps, connecting to your amplifier's AUX input.  A  furniture-grade walnut case is available, look under ACCESSORIES.  Send for our 44-track demo CD.  Please include $3.00 for postage.

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 8.25% IST) + $15.50 Shipping 


SPECIAL COMBINATION PRICEREK-O-KUT DEHISSER + SURFACE NOISE REDUCER:  $625.00 (IL Res. add 8.25% IST) + $15.00 SHIPPING
 

"...those 2 products are the best thing ever bought for my turntable other than cartridge..."


CEDAR DUO SERIES OF AUDIO RESTORATION MODULES

  SPECIAL CLOSE OUT SALE

SORRY, ALL BUT ADA NOW SOLD OUT

“At this new lower price, the “Cedar” was an irresistible bargain.  It actually does what it says it will do and I’m sorry I didn’t buy one years ago.”

J. David Goldin, Radio Archivist, Grammy-Award winning record producer

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

NO LONGER DO YOU HAVE TO PLAY WITH A COMPUTER, YOU CAN JUST LISTEN TO YOUR ANCIENT RELICS WITHOUT NOISE

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, an  A to D converter in order to operate. Also, you will need a D to A converter to hear the output.  ADDA's area available, even low-cost units from $50.00 and up.   A DAT machine or similar can oftern be used.

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 $6,500.00 $1,795.00 (IL Res. add 8.25% IST) + $50.00 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 $6,500.00 $1,795.00 (IL Res. add 8.25% IST) + $50.00 Shipping  

Get this only if you want the extreme best, and all bells and whistles.  You can find other brands at MCM Electronics for much less.  The CEDAR ADA is an A/D and D/A Converter is a stereo, 24-bit, 96kHz 1U rackmount unit that produces an AES/EBU or SPDIF output from a balanced or unbalanced analogue stereo input, and a stereo balanced or unbalanced output from an incoming AES/EBU or SPDIF input.  List Price (1/08) is $1,400.00 $1,314.00 (IL Res. add 8.25% IST) + $25.00 Shipping  

A complete system consists of a digital source, such as an AD converter and DA converter and both processors connected in the same series as presented here.

Warranted for 1 year from time of delivery by CEDAR Audio, LTD.  Units are exclusively repaired by and must be shipped to CEDAR for service.

CLICK FOR: REVIEWS

Listen to LP, RCA LSC-2433     Good 78, COLUMBIA 67837 Bad 78,
COLUMBIA 14147-D
AFRS
TRANSCRIPTION   

 

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