Yamaha CS-70m

Yamaha CS-70m Image

The CS70m is a great big powerful polyphonic analog synthesizer which belongs to Yamaha's excellent line of CS series synthesizers. Fat sounds, cutting leads and bubbly basses, the CS70m has 6 voices of polyphony each supported by 2 oscillators for a total of 12 analog VCO's! It's got very flexible LFO, envelope and filter controls all of which sound really nice and smooth. The VCF (filter) has its own independent envelope control as well.

Yamaha CS-70m Image

Truly a lush sounding instrument that would please anyone looking for that J.M. Jarre or Tangerine Dream sound. Other features include a 4 track polyphonic sequencer, a 5 octave keyboard with aftertouch sensitivity and external magnetic data card memory storage. With only a slim 30 preset sounds that are mediocre, this is the kind of synthesizer that begs you to grab its knobs and start editing (that could possibly explain its big flashy knobs and buttons).

Yamaha CS-70m Image

All in all an excellent and large synthesizer that will make any synthesist happy! It has been used by Kajagoogoo. The next step up from this synth is Yamaha's CS-80 which is an eight voice monstrous beast quite similar to the CS70m. The CS70m is likely to be too large for anything more than studio use but if you can find one it is definitely worth a listen!

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The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

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Are you looking to buy or sell a Yamaha CS-70m? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

24 Visitor comments
September 20, 2011 @ 7:11 am
I bought one of this synthesizers in amazing condition from www.more-analog.com , it was a private order and they were very professional. Maybe you can ask them to find one for you too. Good luck --- this is a really amazing synth.
August 17, 2011 @ 6:45 pm
If you're looking to sell I'm interested in buying (I've posted a few times trying to make a transition from to analog). Contact me at pablojaekwon1985@hotmail.com
May 6, 2011 @ 8:14 pm
Hello I recently purchased one of this amazing synth. It has some small problems and I am trying to fix it. If anybody has a copy of the service manual and can send it to me I would appreciate it !!!

My mail is gomiron7_moon@yahoo.gr
February 15, 2010 @ 10:20 am
Some great CS-70M clips here.


I want one of these!!
February 10, 2010 @ 7:05 pm
Picked one of these up recently (Jan 2010) - you can check it out here:
http://www.youtube.com/watch?v=85y9_MBTjx0 I also have CS80's and can add that although the CS70M isn't in the same league it is still a very impressive keyboard that is well worth investigating...!
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Rated 3.98 (387 Votes)

  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 6 voices
  • Oscillators - 12 VCO's (2 per voice)
  • LFO - 2 LFO's (1 is programmable)
  • Filter - 12 VCF's (2 per voice, 12dB each) with envelope generator
  • VCA - 12 VCA's (2 per voice)
  • Keyboard - 61 keys with aftertouch
  • Memory - 30 voice memory
  • Control - None
  • Date Produced - 1981-84
  • Resources & Credits
  • Images from

    Info submitted by Udo Peters.

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