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SAE 5000A

Impulse Noise Reduction System (1978)

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SAE 5000A


One of the unavoidable obstacles which has challenged recorded music since the very first phonograph is impulse noise - those annoying pops and clicks which appear even on brand new records.

Like its predecessor, the SAE 5000A has been designed specifically to reduce these impulse noises and help you to once again enjoy those irreplaceable records you might have written off as hopelessly scratched.


Channels: 2

Output level: 2.5V (9V max)

Frequency response: 20Hz to 20kHz

Signal to noise ratio: 90dB

Total harmonic distortion: 0.1%

Dimensions: 273 x 76 x 235mm

Weight: 3.6kg



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Reviewed Mar 24th, 2019 by bparsons

This may sound stupid but how do you know if it works?
I’ve connected it the way the manual says but can’t tell any difference.

Reviewed Mar 17th, 2016 by Leo Jablonski

I recently purchased a used SAE 5000 for $30 Canadian and at that price, I wasn’t surprised when it didn’t work at all. Since I found the schematic diagram on line, I decided to open it up to see if I could repair it. I was quite surprised to see that all 3 of the Texas Instruments voltage comparator LM337 chips were melted. They looked as if someone had gone over them with a torch and I’d never seen anything like that before. I poked around inside with a multimeter and all of the other components looked and/or tested to be OK. I replaced the 3 chips (at a cost of $2.55 Canadian) and the unit now works perfectly!! The other unusual thing was that the fuse holder was bypassed and it looked like it came out of the factory that way. I wired the fuse in place and the unit now only draws 50mA of current (power on but not processing audio). The LM337 data sheet is dated 1979, which is about when this unit was introduced, so it seems that the chip was quite new at the time and may have had a bug. I’m beginning to think that the 5000 and the 5000A are identical, except that the 5000 may have had some bad chips and Texas Instruments (and SAE) later solved the problem and introduced the 5000A.

Anyway, I’m quite pleased with the unit. It isn’t exactly a miracle cure for the noisiest of records, but it really helps reduce noise.

Reviewed Oct 21st, 2015 by audiomagnate

This does exactly what it was designed to do. I use mine on all but my best records. On the ones in decent condition I use it with a light touch (slider to the right) but on really bad records from my Dad's collection it makes even the worst records listenable. The inverse button is very helpful for getting the setting of the slider just right.



SAE 5000A schematic

I recently began playing some 78s - the 5000A does a great job of making them much more listenable. I'm curious to take a look at the design. Does anyone have a source for the schematic or service manual?

SAE 5000 manual

Just acquired an SAE 5000 at an estate sale, so finding the manual on HiFi Engine is extremely helpful; could not have figured it out without this manual!


thank you very much for having this site. you had what I went to find [SAE//5000] I could hug you all, sae500/owners manual down loaded yes' I will recommend this site to my friends.

SAE 5000A

I have just acquired an SAE5000A,but have not yet connected it.I'd like to have Circuit, board detail etc.as it is an old machine. My Hughes AK-100 has just Died. (I bought it from Hughes on special order, with 240 volt conversion.but no circuit or service details.)I have also a Carver 4000,likewise no details.I'd appreciate same,if anyone can oblige.I have many old manuals which i can scan for the group.(will list as i go thru my gear)

Carver 4000t Schematic Diagram Manual


I have a 4000t schematic diagram "manual" I can forward if desired.

good luck

re: Carver 4000t Schematic Diagram Manual

Could you send me the schematic manual SAE 5000A?

owners manual download

I am new to this site, but I just downloaded owners manual for SAE5000A unit(my first time) and am very pleased. Thanks, jesse.

This website is not affiliated with or sponsored by SAE. To purchase 5000A spares or accessories, please contact the company via their website or visit an authorised retailer.