"Fully functional and in excellent cosmetic condition for its age Yamaha CS70M. It has been serviced to ensure reliable use.
The CS-70m is the younger sibling/sucessor to the legendary Yamaha CS-80.
In fact It improves upon the reliability and features of the CS80. the programability of the CS 70m allows for incredible textures just not possible with other vintage synths from the era and is the last analog yamaha synthesizer of the era.
Service notes include (05/05/25):
Replacing electrolytic capacitors in power supply Replacing 2-prong inlet with modern 3-prong IEC inlet (NOTE: unit was photographed prior to the IEC replacement) Cleaning flushing and lubricating all sliders Cleaning flushing and lubricating all potentiometers Cleaning all internal switch contacts Cleaning all I/O jacks Cleaning battery compartment and replacing batteries"
"LOW PRICE ALERT! Yamaha CS70M - The closest thing to a CS80 money can buy.
There are some CS80 presets programmed in this synth’s memory! We did it with a real CS80 side-by-side!!!
There are some traces of wear on the side panels (similar to all the Yamaha’s M models..) - other than that it is in exceptional shape and everything works flawlessly.
"Explore the unique and rare Yamaha CS-40M, a 2-note polyphonic synthesizer that shares the legendary CS80’s fat, rich sound thanks to its sub-oscillator per oscillator configuration.
The CS-40M features a distinct architecture with its sub-oscillators positioned after the high-pass filter, allowing for the creation of truly unique and interesting sounds. It boasts the same low/high-pass filter as the CS80 and CS70M (the IG00156) but with added versatility due to its bandpass mode, which offers more flexibility compared to the CS80's single filter.
One of the standout features of the CS-40M is its 5 modulation routes. Each route operates at the same speed but offers its own waveform choice and depth. You can modulate either or both oscillators, the filter, the amp’s ADSR, or the entire synth. The ring modulator can also be introduced to modulate the whole synth at a different speed, creating an incredibly dynamic soundscape.
Produced in limited quantities between 1979 and 1986, the CS-40M is a rare gem in the synth world. While it includes 20 presets similar to the Jupiter 4, these presets aren’t tweakable. However, the live panel interface, akin to the MiniMoog, is user-friendly, responsive, and satisfying to use.
With its 44-note full-size keyboard and synth action, the CS-40M is a joy to play and can be seen as a 2-note polyphonic version of the CS70M.
Time Stamps
0:00 – Intro 1:32 – Ring Modulator 2:07 – 5 Modulators 3:17 – The Oscillators 3:39 – Sub- Oscillators 3:58 – All the Oscillators 4:29 – Mixing the LFO with the Ring Modulator 5:06 – Ring Modulation Attack Functions 5:44 – Duophonic 6:05 – Add the LFO to the Ring Modulator 7:00 – Noise – no modulation 7:25 – Noise with open close filter 7:53 – Plus Resonance 8:34 – Plus LFO 10:05 – Noise through the Ring Modulator 11:55 – Add Resonance"
"The Sequel to Yamaha's CS-80, the Greatest Analog Polysynth of all time (and certainly the most expensive) is still quite unknown compared to its siblings. In this livestream we'll be checking out the oscillators, filters, ring modulator and do some practical sound design until the Blade Runners shut down the stream!"
"Many people do not know about this rare, vintage synthesizer, the "update" to the greatest analog polysynth of all time. The CS70m was Yamaha's last chance to capture the analog synthesizer market before they went all in with digital synthesizers like the DX7. Today there are less than 1,000 that have survived. I think this synthesizer should be considered as legendary as the Roland Jupiter 8, Juno 106, Sequential Prophet 5 and Oberheim OB-X. It's older sibling, the Yamaha CS-80, was championed by Vangelis, who wrote and performed the score to Blade Runner.
"Please join us while we do a direct sonic comparison of these two classic Yamaha synthesizers. As is widely recognized, the CS80 is arguably the most legendary synthesizer ever made. Just under 800 units were produced at an MSRP of roughly $7000 each in 1978. The CS70m was the follow up flagship model and retailed for just under $5000 in 1981. We could not find the production total for the 70m (if anyone knows, please share in the comments!). However, like its sibling, I would guess that less than 1000 were made during its production run which ended in 1983 as Yamaha prepared to release the DX7.
While they do not sound identical by any means, we hope this video demonstrates how incredibly under recognized the CS70m is within the CS Poly family. It is the closest you can get to the CS80 in terms of feature set, voice architecture, and dual channel sound. For the prices people ask today for the CS50 and CS60, one would be smart to look for a 70m instead (IMHO!).
The audio is DIRECT & DRY - You are hearing the raw audio as it comes directly from each synthesizer. NO post processing (Effects or Dynamics) was done.
Thank you so much for watching! This channel is a passion project. We are just two hobbyists who share a deep passion for synthesizers. Please consider subscribing, we would greatly appreciate it! 🙏
**I am not a professional keyboardist! :)** *On the CS80, the sliders labelled: "Sub Oscillator" = LFO* Fun Fact: The CS80 has 8 voices; the CS70m has 6.
Playlist:
KORG DW-8000 - Synth King "vintage analog" sounds
Roland JX-8p - Vecoven Super Flash ROM & PWM upgrade
Yamaha CS70m - first contact
Yamaha CS70m - loading patches from magnetic cards !!
Oberheim Matrix-12 -- first contact !
Oberheim Matrix12 - one song - one synth
Rhodes Chroma - one song - one synth
Rhodes Chroma (ex KRAFTWERK Kling Klang Studios) - first contact !
Oberheim OB-Xa - 15 minutes pure analog sounds - part 3/3
Oberheim OB-Xa - 15 minutes pure analog sounds - part 2/3
Oberheim OB-Xa - 15 minutes pure analog sounds - part 1/3
Oberheim OB-Xa - one song - one synth
Oberheim OB-Xa improvisation
Oberheim OB-Xa - first contact
Roland SH-2000 - one song - one synth
Roland MKS80 - one song - one synth
Korg Polysix - one song - one synth - free patches !!!
Roland JX3P - one song - one synth
Roland Juno 106 - one song - one synth
Roland Jupiter 4 & Promars MRS-2 - one song - one synth (ok 2)
Roland Jupiter 6 - one song - one synth
Roland Super JX10 - one song - one synth
64 new sounds for Roland JX10/MKS70 Vecoven PWM 4.xx update
64 new sounds for Roland JX10/MKS70 Vecoven PWM 4.xx update
Fender Chroma Polaris - one song - one synth
Fender Chroma Polaris Sound Demo (132 patches)
"This is a wonderful example of a classic CS10 and in my opinion I would call it mint or very close to it, it fact the flight case is in superb condition also. If it’s not mint ( I’m struggling to find anything in the form of a scuff or Mark let alone a dent) then it’s definitely a worthy addition to any synth collection. I had this notion once of collecting all of the vintage Yamaha synths in the CS range but Haha who am I kidding?? A CS 80 really? or even a CS 60 or the rare as hens teeth CS70m!! ...not going to happen."
"CS70M with original memorystick booklet(!) in an extraordinary condition. This CS is fully working; comes tested and with certificate (Marc Marc Amsterdam). Booklet contains custom presets (by unknown musician) and original factory presets."
Anyone know how the preset tabs work? Are the parameter values on the other side?
"We drop in at the Vintage Synthesizer Museum in Oakland, California, and try out a few of the synths!
For more information and reservations, please visit https://vintagesynthmuseum.squarespac...
A space meditation reverb synth track in two parts.
A project found on my computer from the days when I owned a Yamaha CS70M. I guess 2017.
Synths and drum machines used;
5U modular; MOTM480 cs-filter and Sea devils filter
Yamaha CS70M
Korg Wavestation EX
Vermona DRM1 mkiii
+ two voice samples
"Yamaha CS-70M analog synthesizer demo. Playing sounds and patches on vintage CS 70M analog synth from Yamaha including sequencer, pads and LFO tweaks.
The Yamaha CS70M is a classic dual-channel, 6-voice polyphonic synthesizer and the last analog synth from Yamaha in the early 1980s. Although it came after the legendary Yamaha CS-50, CS-60 and CS-80 synths, the CS-70M has its own distinct tone, sounds and sonic character.
The Yamaha CS-70M has 2 oscillators per voice for a total of 12 VCOs. It also features 2 LFOs, a multimode filter (LPF/BPF/HPF), envelopes for VCF and VCA, ring modulator, chorus and tremolo effects, a 4-track real-time and polyphonic step sequencer, patch memory, 61 keys with aftertouch, and autotune.
IMO, the Yamaha CS-70M synthesizer is a beautiful instrument. It is a large and powerful synth that has a very earthy, dusty and nostalgic tone to it which can often take on acoustic/wood sound qualities.
The Yamaha CS-70M is also a very rare synth and often commands very high prices on the second hand market. Nontheless, if you have the chance to obtain a Yamaha CS-70M, I would not hesitate. It is a beautiful synth in its own right.
This Yamaha CS-70M synthesizer demo was filmed at the Vintage Synthesizer Museum in Oakland, CA. Visit them at www.vintagesynthmuseum.com"
"Fully functional and in excellent cosmetic condition for its age Yamaha CS70M. It has been serviced to ensure reliable use.
