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Yamaha CS15

“Vintage Yamaha CS-15 Analog Synthesizer. Works as it should and sounds great. All key contacts and controls have been cleaned. All electrolytic capacitors have been replaced. Rear panel has some paint blistering / pitting as can be seen in pics. ” Click here to visit listing on eBay

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Yamaha CS15

“CS15 with hard case(not original).In exellent working condition.Just had a good going over, mot at synth prof,fader replaced, re cap.Cosmetically better than me…please check photos.” Click here to visit listing on eBay

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Yamaha CS-15

“Works good however cracking potentiometers also need to clean surface. Also voltage 100v” Click here to visit listing on eBay

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Yamaha CS15

“Up for sale, a Yamaha CS-15 vintage duophonic analog synthesizer in collector-grade condition and in perfect working order, complete with the original case. A step up from the CS-10, the CS-15 is great for strange blips, bass lines, and tiny high-pass sounds, with a distinct sonic range all its own. The CS-15 is particularly user-friendly, with a knob, switch, or slider dedicated to every function. This synth boasts two multimode filters, and while it’s a duophonic/bitimbral synth “on paper,” a connection to CV is required to get the extra voice. Each of the two VCOs has its own CV/Gate control.

The CS-15 offers exceptional flexibility of the VCFs and the routings to the filters and envelopes. You can route VCO 1 to both VCFs and the VCFs to any of the envelopes positive or negative voltage. The VCFs are 12 dB/Oct and are switchable between low, band, or high-pass. They are the key to the sonic properties of the Yamaha CS family. Other features are noise, external-in for processing other sounds, LFO with Sample & Hold (for those bubbling sounds) and an individual auto-bend for the VCOs.

Cleaned and calibrated, this vintage synth functions exactly as it should and has been outfitted with a modern power transformer to run reliably on USA 120v power. As the photos can attest, this synth is extremely clean cosmetically, with bright white level keys and all switches, sliders, and knobs intact. The enclosure shows only a couple minor scuffs, and this CS-15 is ready for stage and studio use.

The original black tolex carry case is equally as clean as the synth with a blush plush interior and flawless Yamaha silkscreen on the lid.” Click here to visit listing on eBay

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Yamaha CS-15

“Excellent used condition uk power that is switchable to any country.

This has two extra switches to combine both filters to make a 24 DB filter and anothe switch to reroute noise to filter 2

Comes with two printed manuals

All fully working and services 4 years ago”
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Yamaha CS-15

“Functionality: 10/10, Appearance: 9/10

This CS-15 has recently been gone through and given a thorough service. All electrolytic and tantalum capacitors have been replaced, along with the power transformer so that it can accept US wall power more easily ( it was from Japan, rated for 100v power). The tuning has been calibrated and tested and everything works and sounds fantastic! Cosmetically, it has a mark here and there, but overall looks great. Please see the photos for more detail. I would prefer local pickup on this, but I will professionally pack it using recycled materials if it comes to shipping.” Click here to visit listing on eBay

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Yamaha CS15


Selling this lovely dark horse of a synth from the 70s. This thing is very underrated, sounds huge and has a lovely bottom end. Two of everything – oscillators, filters and envelopes.

In fantastic condition, all pots and switches cleaned. Everything tested and working perfectly. It hasn’t been used much recently (hence sale) as I have got my cs-60 back from repair so that has taken over.

Collection only from East London. Or can look into posting but would much rather collection.” Click here to visit listing on eBay

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Yamaha CS15

“A classic Yamaha CS 15 analog synthesiser for sale. Circa 1980.

This was originally a Japanese unit, however a new internal transformer was fitted to convert it to a UK voltage.
At the same time the flying lead was removed and replaced with a much more convenient standard IEC plug.

This synth is in great condition as you can see from the photos and it sounds fantastic.
Just have a listen to some of the demos on youtube, the filters are amazing and smooth.

Also included is a like-new Kenton USB solo, which can provide MIDI over USB, to GATE+CV to control this synth.
I will also include the jack cables I made to connect the two.

The only issues I can think of is there are a few little marks at the top of the front pannel and a couple of the knobs are a tiny bit scratchy when turning them (a clean would sort them out), but given its age thats fairly remarkable.

Has been stored indoors as part of my synth collection in a smoke free studio”
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Yamaha CS-15

“Yamaha CS-15 Synthesizer with Original Hardshell Case” Click here to visit listing on eBay

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Yamaha CS-15

“Item: Vintage Yamaha cs-15, 37 key monophonic (1 note at a time) analog synthesizer.

This item is in good condition, and I just played with it, and it plays fine and sounds fat.

Should work well for the buyer as it seems to be fully working. Nice sound. No returns, sold as-is.

This is the rare u.s. version with a 120v power supply. Missing a couple knob caps (as pictured)” Click here to visit listing on eBay

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Yamaha CS-15

“Cleaned and calibrated, this vintage synth functions exactly as it should and has been outfitted with a modern power transformer to run reliably on USA 120v power. As the photos can attest, this synth is extremely clean cosmetically, with bright white level keys and all switches, sliders, and knobs intact. The enclosure shows only a couple minor scuffs, and this CS-15 is ready for stage and studio use.

The original black tolex carry case is equally as clean as the synth with a blush plush interior and flawless Yamaha silkscreen on the lid.” Click here to visit listing on eBay

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Yamaha CS-15

“This synth really has its own sound. Lots of nice knobs and best of all, not one but two of those funny sounding multimode filters. It’s actually a duophonic / bitimbral synth but you have to connect it to CV (Hz/V like Korg not V/Oct) to get the extra voice. Each of the two VCOs has its own CV/Gate control.

The best things about it are the flexibility of the VCFs and the routings to the filters and envelopes. You can rout VCO 1 to both VCFs and the VCFs to any of the envelopes positive or negative voltage. The VCFs are 12 dB/Oct and are switchable between low, band or high-pass. They are the key to the nice sound of the Yamaha CS family. Other nice features are noise, external-in for processing other sounds, LFO with Sample & Hold for those bubbling sounds and an individual auto-bend for the VCOs.

These have been used by countless bands: Astral Projection, Somatic Responses, Moog Cookbook, The Human League, and Vince Clarke. Rare beasts now and much in demand for those musicians looking to escape the ‘in the box’ experience of DAWs or want real analogue rather than virtual.

This item isn’t a time warp piece and so has lost the fader cap on the pitch control and the EG1 release slider stalk has broken off but I haven’t changed it as you can still operate it fine. This unit looks to have been recapped and is signed inside S. Barbieri.” Click here to visit listing on eBay

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Yamaha CS15

“This listing is for a Vintage YAMAHA CS15.
This unit works perfectly.
This unit is for 100Voltage.
You may need a voltage converter.” Click here to visit listing on eBay

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Yamaha CS-15

“Yamaha CS-15 Vintage Analog Monophonic Synthesizer Working Classic Black Finish. Japanese 100v (just use cheap converter).

COMPLETE REFURBISH AND CLEAN OUT – MOOG POTS ” Click here to visit listing on eBay

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Yamaha CS15

“Yamaha CS-15 Vintage Analog Monophonic Synthesizer Working – GREAT!
Absolutely lovely and fat sounding synth! My favorite on my collection, that’s why it’s so hard for me to sell it but I have to let it go.
Physical condition is 7.5/10.
This synth has two of everything (oscillators, filters, envelopes, etc). The first filter is a bit noisy and crackly, but I’ve being using the second filter and that has worked for me. If you want an absolutely perfect working synth, you will have to take it to the synth doctor. Otherwise, great!” Click here to visit listing on eBay

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Yamaha CS-15

“yamaha cs 15 Analog Synthesizer. Works beautifully. Sounds amazing. Overall very clean with a few minor scuffs and dings. Shipping well packed and fully insured ” Click here to visit listing on eBay

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Yamaha CS15

“Yamaha CS 15 Rare Vintage Analogue Synthesizer
Massively fun and tweakable synth so many live switching and routing options it demands to be played…
This synth is a classic… a lesser known classic… the closest thing i can compare it to is the MS20
but it is a very different beast than the MS (it doesn’t squeal) in the right hands its a beast…
Duophonic it has CV and GATE (Hz/v s-trig) for each oscillator… then you get 2 of everything with interesting rerouting options…
external in… opens up more possible fun… I lost hours testing this thing… its hard not to get something intersting out of this thing!
Please note this is Hz/v s-trig CV control… I tested it with an Arturia beatstep pro (arturia is good for Hz/v)
Tested CV and GATE ins and both working fine and seperately together!!! 2 lines 2 filters 2 envelopes
I perfer to use just gate triggers and play the keyboard live because the live controls are a breeze!”
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Yamaha CS-15

`”Yamaha CS-15 37-Key Monophonic / Duophonic Analog Synthesizer.

Excellent cosmetic and working condition with updated power supply and capacitors. Huge sound and no scratchy knobs or faders. Keyboard is from 1979 and is in very good condition for the age; please view photos in detail for condition. Keyboard and case will be packaged extremely well; sold “as is”.” Click here to visit listing on eBay

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Yamaha CS15

“Vintage analog synth
see all pictures
powers on and seems to be all working good
there are a-lot of functions and sounds
all knobs and slides seems to work and change the sounds
all keys working
the knobs are not original
this unit is quite old and will need to be cleaned and serviced
the control panel show lots of age and wear as seen
no broken switches or slides
please see all pictures for condition” Click here to visit listing on eBay

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Yamaha CS15

“This CS15 is in really nice shape. A couple of minor scratches on the front panel that have been pretty well repaired and no other damage to speak of. Works nicely with very little crackle from any of the pots. I have swaped the transformer to 230v (was Japanese 100v initially), replaced a faulty IC in the power supply circuit and replaced a few capacitors that were on the way out. Finally I have re-tuned as per factory service manual. Im an electronic engineer by profession and restoring & enjoying analogue synths has been a hobby for more than a decade, so it job has been done to a professional standard. Please check my feedback.” Click here to search for synths on eBay

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Yamaha CS-15

“YAMAHA CS15 Monophonic Analog Synthesizer. This is a great lesser known mono-synth which I’ve used extensively for both bass and lead sounds. It’s added secret weapon is the audio trigger input which is a super cool feature for adding dimension to other sources such as kick drums. Was serviced a little while back by top UK tech Tim Wallhead and is all in good working order apart from one missing slider cap on the pitch bender (see photos). Condition is “Used”.” Click here to search for synths on eBay

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Yamaha CS15

“YAMAHA CS15 Analog Synthesizer Multimode Filter 2x CV Gate/ Pitch . Condition is Used. ” Click here to search for synths on eBay

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Yamaha CS-15

“YAMAHA CS-15 Vintage Analog Synthesizer, fully functional. Condition is Used. ”
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Yamaha CS-15

“YAMAHA CS-15 Vintage Analog Synthesizer, fully functional. Condition is Used.”
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Yamaha CS-15

“Vintage Yamaha CS-15 have owned for years
Selling off equipment only because my business needs the cash influx

Works great
All keys trigger fine” Click here to search for synths on eBay

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Yamaha CS-15

“Yamaha CS-15 monophonic analog keyboard synthesizer. EXCELLENT condition physically and internally.”
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Yamaha CS15

“Amazing powerful monophonic analog synth. Up there with vintage moog stuff”
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Yamaha CS-15

“YAMAHA CS-15 Vintage Analog Synthesizer. Condition is For parts or not working. Dispatched with Other 48h Courier.bought as part of a lot from an old club clearance where it was found stored safely in a cardboard box have only tested in so much as powering on which it does as can be seen in the pics haven’t linked up to amp or tested any functions as haven’t got a clue about vintage musical items so selling as untested spares or repairs to prevent comebacks maybe working fine or brilliant restoration project for someone with the knowledge,cosmetically appears to be in good condition considering age few chips case paint here and there and usual age related wear and is missing the portamento and pitch bend slider and one of sliders on eg2 panel has snapped off still goes up and down and do have original slider as this was taped to the unit low start no reserve so happy bidding.”
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Yamaha CS-15

“Perfect Working – Refurbished

Nice Condition as see in the pictures”
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Yamaha CS-15

“Selling my incredible Korg CS-15 which I had completely serviced last year by Rosen Sound. It’s a 100v Japanese unit that has been rewired for 120v so you will not need a step down converter. Everything works perfectly as it should. It’s got custom black wood side cheeks as well as a 3.5mm Kenton filter socket. Also included is a really nice custom cover. This synth is an amazing machine and capable of some very unique sounds. ” Click here to search for synths on eBay

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Yamaha CS15

“Nice used AKAI MPC 1000 BK – Black with Blue Pads + Power Cord. It has 16MB RAM – a 128MB card is available for about $10 on the interweb. It is missing one slider cap. (See pics)”
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Yamaha CS15

“Beautiful Yamaha CS-15 and case. The synth is in excellent (beautiful!) condition and sounds quite nice. I purchased it from Soundgas (UK) last year and they cleaned, tuned-up, and inspected it prior to shipping it to the states. Please note: this is a Japanese synth and requires a transformer (not included). Also, the case does have one broken hinge, but otherwise it is in working order. Comes with original manual.” Click here to search for synths on eBay

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Yamaha CS-15

“Up for auction is this Yamaha CS-15 Monophonic Analog Synthesizer. This works but is being sold for parts or repair. Unit has been in storage for a while and some controls need to be cleaned, they don’t turn, so unable to test if they work. The controls that I could test work fine. Unit is clean inside and out. Cosmetically very good but it does have some wear the worst being a chip by the power button. The tops of two controls on the equalizers broke off but they work. And a few plastic knobs are missing but for the most part the unit is complete. Please check the pictures for condition. ” Click here to search for synths on eBay

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Yamaha CS15

” Works. I cleaned all pots and switches it needs a technician to fix the decay or release of the tone . Unit passes audio , vcos and oscillators are functional but needs to be tweaked by synth tech to be 100 percent . I will list sold as is for parts not working but you can call me and I’ll play it so you can hear it . audio no distortion in signal at all . The only problem I see with unit is when you play a note it works but it doesn’t decay .”
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