Even though everything works as it should, due to it’s age it is being sold as is. ” Link

Functionality is absolutely perfect, apart from one small thing… the filter selector switch (HP/LP/BP) is fiddly on each filter section, as in it sometimes needs a bit of a wiggle to sit on the right setting

Cosmetically it’s great, bar a few things which i’ve showed in the photos, there is a small crack in the casing above the portamento slider, and the decal has worn off on the brilliance slider (essentially a master filter controller)

I’m sure if you’re looking then you know all about this synth, but if not, i’ll tell you it’s fantastic. There’s two of everything! apart from the LFO. Really flexible signal routing” Link

The damage already done to this machine was mainly to the very thin slider controls which were made from very soft metal. ALL these are in some way damaged but all of them still work and are entirely operable. There is a broken pot shaft (illustrated).

The instrument powers via an internal power supply and has a long mains cable – no wall warts on these!

There are inputs for external control – these are NOT the same system as a moog, I have never used this with a Kenton etc, if you have questions about how to do this, I am not the man to ask.

Keyboard is fine. Control panel is OK with the occasional dirty pot, you already know that switch cleaner will help.

Do NOT bid on this instrument if you don’t know what it is!!!…..
It is NOT a midi instrument and does not connect to your iphone with a USB cable!
It DOES NOT immediately produce “PHAT BASS GROOVES” whatever those may be.
It has NO memories!!! You make all the sounds yourself!!
It only plays ONE NOTE AT A TIME – no chords – highest note takes priority
It is heavy, complicated, clicky and buzzy, slightly battered and totally wonderful.” Link

This unit was professionally checked/serviced/cleaned.

come with original case.

This item is 100v 50/60hz. you may need a power converter depending on your country. ” Link

Owned by me since it was new in 1980.

Only ever used at home, this has led a pampered life with, in all honesty, very little use.

A nearly infinite variation is available via the vast amount of control you have over the creation of your sound.

An awesome machine, it works as well today as it did 30 years ago.

I can vouch for this as I have just given it a good workout!

All other items in the photos like the stand, the table and the cat etc are not included in the sale.” Link

I can’t imagine this synth has seen a great deal of action in it’s 31 year life. You have to look really hard to see any blemishes at all!! As you may already know it really does sound fantastic.. In a world of software synths this is like a breath of fresh air, especially for basses.” Link

I will post pics tomorrow but can tell you that its been kept in a dry smoke free house and everything seems to work.

I don`t know anything about vintage keyboards but this one looks virtually unmarked.” Link

There are a few cosmetic issues ( it is 30 years old! )

Two missing slider caps – Pitch Bend Slider & Portamento

One black key has a small burn which isn’t immediately noticeable.

It comes with 20 blank patch sheets for you to record your own patches.” Link

Up for sale is a Yamaha CS 15 monophonic synthesizer (actually duophonic, but you need to connect it to CV to get the extra voice). This synth is sexy, sounds great and is built like a tank. Here are some features:

Monophonic/Duophonic

2 tunable VCOs.

1 LFO: triangle, saw, sample & hold. 0.1-100hz (!!!). This goes well into audible range.

2 VCAs

2 ADSRs.

Filters: two multi filters (HP, BP, LP), controlled either by each or both ADSRs.

Control: Dual CV/Gate

It is essentially two monophonic synths in one case, you have two of everything and a lot of routing options. There are plenty of features and versatility, this baby and it is capable of some amazing tones. Check out youtube for some in depth reviews (I won’t link directly because it is probably a violation of the TOS and I did not make the videos personally).

The synth plays excellently, The volume pot is a little scratchy, no biggie to clean but since I have zero mechanical aptitude I did not do it personally.

Cosmetically there are a few scratches on it, nothing major, mostly on the back and three on the front. Photographs included. I was thinking of painting these up at one time but I am not good at that sort of thing and would probably mess it up more.

I am also including an original Yamaha HSC with the synth.

This is a Japanese 100v synth. You will need a separate transformer for it to work on US/Euro voltage.” Link

The unit is in showroom condition and is fully functional.It has never been used outside of my studio.

If you are a collector, I doubt you will find a better example.” Link

Not just two VCO’s you also get two Mixers, two VCF’s, two VCA’s and two envelope generators

Twice as many knobs with a little less than twice the confusion

Once you get used to constructing sounds step by step you will begin to realise just how powerful this instrument is

Electrically this instrument is spot on i.e. it all works as it should

Cosmetically it is generally in very good condition apart from 3 slider caps missing and one of the keys has been glued together” Link

VINTAGE MONOPHONIC SYNTHESIZER

USED

SYNTHESIZER CAME OUT OF A WORKING ENVIORNMENT WE HAVE NO WAY OF TESTING OTHER THAN PLUGGING IT IN. WHEN PLUGGED IN ALL LIGHTS FUNCTION, AS WE HIT SOME KEYS LIGHTS RESPONDED TO THE KEYS.

PORTAMENTO, BRILLIANCE VCF, AND PITCH BEND LIMITER LEVEL CONTROL SLIDES ARE MISSING THEIR PLASTIC CAPS CAN BE REPLACED. OTHER WISE ITEM LOOKS TO BE IN EXCELLENT CONDITION” Link

The only repair was a dry joint on the Portamento controller – fine know.

As you can see in one of the pictures I spilt some emulsion paint on the mains lead when I was decorating the bedroom once – I will attempt to remove most of this prior to dispatch.

The unit is in nice used condition for a vintage Synth. There are signs of use all over the Synth but nothing nasty – the pictures are very accurate.It is a bit dusty through lack of use
but all keys and controls/faders work fine – as I said the Volume knob and a couple of the VCF knobs are a little bit noisy through lack of use even though they function fine. The
Portamento Slider leans slightly to one side where is a little bent (see pic) and the black plastic slider knob on the Pitch Bend control is missing but you can buy these very cheaply.
(none of which effect functionality!)” Link

I bought this synthesiser as a second hand item in very good condition in 1982, I used it for awhile when I had a “home studio” setup but since 1996 it has been boxed up (I do not have the original packing) and stored in a dry cupboard. It is still in very good condition & I’ve recently checked it to see it is still working OK, which it is. A couple of the rotary controls produce a little bit of “crackle” when they are turned & would probably benefit from application of a good quality switch cleaning compound.

The non-standard silver “D-Type” connector on the back panel was fitted by me as part of a project whilst studying electronics at college. I fitted an interface to the synthesiser to emulate key presses which was driven by my own sequencer software running on a Sinclair ZX Spectrum. This modification did not involve any changes to the original circuitry and I subsequently removed this interface. I left the “D-Type” connector on the back panel as I didn’t have a suitable blanking plate but there are now no internal connections to this socket. The four mounting pillars for the interface board (you might just about see them on 9th photo) were also left in place for same reason.

I have the original owners manual for the synth and an original official Yamaha service manual which contains 28 pages of full circuit diagrams, parts list, servicing and calibration information and a separate enlarged (approx 3ft. X 2ft) foldout full circuit diagram. This manual is probably more rare than the synthesiser and may be worth a fair bit on its own, however it seems like it makes sense to bundle it with the synth.” Link

This synth has the following Solaris Upgrades :

24dB filter modifictaion /w switch for original 2 x 12 dB routing
extended LFO precision for high frequency range

This synth also has a Elektor ring mod to modulate both oscillators or one oscillator and external sounds (there’s also a mic input for the ring mod)

I’ve played with it almost everyday since I got it, the range of sounds is amazing, this is as versatile as a modular synth, the routing is incredible!!

take a look at the pictures to see how nice the unit is!” Link

RARE and TOTALLY VINTAGE!

In good used condition. I plugged it in and it powered right up. All keys work. I moved the knobs and buttons and they all seem to be doing their thing! I don’t really know what their “thing” is, but I know it sure made some wicked cool sounds and the knobs and buttons changed sounds when I turned/pushed them. There is a small bit of sticker residue on one side where a sticker was removed, AND on the BACK, there are a couple of stickers that I decided to leave and let the High Bidder decide to remove or keep them (see photos). Of course, there are some normal scuffs here and there, as this is a vintage item. PLEASE SEE PHOTOS — YOU WILL RECEIVE EXACTLY WHAT YOU SEE (no case included).” Link

Original UK import (240V) from 1982.

Probably the best available and a reluctant sale.

Excellant condition. Like new. Home use only. Never gigged. A classic of its type. Very rare. Especially in this condition. Perfect working order. Still with it’s original packaging.” Link

Excellent used condition

Missing a button cover(as in picture)” Link

Cosmetically, there are a few scratches on the face of the unit and a scuff on the left side panel as the pictures will disclose. All three of the darned slider caps are missing for the expression panel.” Link

Unit runs on 110V.” Link

Incredible sounds possible with this massively underrated synth.

I will almost certainly buy another one of these one day, I’m very reluctant to part with it, but i just moved into my first house and not enough space.

But rest assured that this CS-15 is one of the most well looked after and unmarked examples you could probably ever find.

There is one scratch below the volume control (which is hard to spot) and a couple of scratches underneath on the wooden base panel but that is about all. other than that, it is almost cosmetically perfect.

Functionally it is amazing, the keys are all even and trigger perfectly, the rotary knobs are all perfect. There are only two sometimes scratchy filter switches (they crackle when switching modes) which may need some contact cleaner, I really don’t think it’s any worse than that (i’d say this is more a symptom of underuse than overuse, as the longer i’ve had it, the less that has been a problem.)

I really can’t praise this synth’s sound making capabilities enough, it can even make some formant-synthesis type sounds thanks to its two filters.” Link

This synthesizer has 2 identical signal paths next to each other. Great for detuning tricks etc.

The CS-15 is especially good for FX and weird out of this world sounds.

Filters can be set seperate from each other to create interesting LPF to HPF sweeps.

It looks like this CS-15 has lived a studio life. Has normal wear only.

Item is in good overall condition. Pictures are of actual item.” Link

CONDITION

This CS-15 is in perfect working condition and in excellent condition!!

come with original case.

This item is 100v 50/60hz. you may need a power converter depending on your country.” Link

Could definately use a cleaning inside, of some of the pots and switches. Missing knobs for portamento, brilliance, and pitch bend sliders. Also, knob for EG 1 is broken off but still fully functioning. I wil include this. The body of the synth is in awesome shape.” Link