Kawai, SX-210 @ 19 September 2017, “No Comments”

“Rare Kawai SX-210 Synthesizer Excellent Condition Not working with repair kit

This a very rare Kawai SX-210 Synthesizer from a studio sale

All the keys and buttons feel right and the overall appearance of the unit is in excellent condition.

Typical battery leakage failure on main board. See picture, tracings have been tested with ohmeter and are conductive

Old battery has been removed and the last custom CPU repair kit from Portugal is included with it.

I have no time to fix this myself. All nearby components including rare CPU are included in the kit along with instructions for tech repair

No other way to test this so it is sold as is for parts or repair” Link

Kawai, SX-210 @ 07 June 2016, Comments Off on Kawai SX-210

sx210 “I found this rare and excellent condition Vintage Kawai SX-210 Polysonic Synthesizer\analog keyboard at a local estate sale. This keyboard has been tested and works and sounds great! Very low start price on this professional full size analog keyboard. These were produced in the early 1980s by Kasai and are exceedingly hard to find. True analog sound from this vintage full sized Kawai soundboard. This was found at the estate of a local musician and has been very well cared for. This 61 key poly sonic synthesizer shows a little wear to the woodgrain sides as shown in pictures but is otherwise clean a works perfectly, producing clean a clear true analog sound. See all pictures. All original keys buttons and dials. Previous owner stated that he has never had any issues with this keyboard and was the original owner. These keyboard are very rare and very desirable to musicians as they are no longer produced This keyboard weighs about 28 pounds and I am extimating the shipping weight to be 30-31 lbs. All functions tested and working as designed and intended. No excessive slack or play in modulation wheel or pitch/bend bar. The only wear noticed upon inspection is a slight canting of the 32nd and 58th keys. Might be an easy fix at a music shop but keys work fine, they just hit the keys next to them (left and right respectively. No other issues but some cosmetic wear as to be expected for a 35 year old vintage price. All original down to the cord. This full sized keyboard measures 34 3/4″ inches long and is 6″ tall with knobs. Case measured 15 3/4″ deep from back to front. Very clean example that was well cared for and properly stored by the previous owner.” Link

Kawai, SX-210 @ 05 April 2016, Comments Off on Kawai SX-210

Kawai SX-210 “Rare analog poly synth manufactured in 1983. No midi because this keyboard came out right before midi was available. Great sounding DCOs, very versatile synth with sub oscillator, poly 8, poly 4, or mono. All functions work EXCEPT some of the preset buttons.

Some issues:
I repaired the rotary controller which now works perfectly.
Some preset buttons don’t work or make an odd noise when pushed.
Output is noisy, but usually not noticeable when notes are played.
I will gladly provide audio demos upon request.” Link

Kawai, SX-210 @ 01 March 2016, Comments Off on Kawai SX-210

kawai sx-210 “Up for sale is a very rare 6-voice Kawai SX-210 Analog Synthesizer. Functionally and Cosmetically perfect!! Internal battery was replaced years ago and has been regularly maintained. No battery leakage has ever occurred. These don’t come up for sale often, let alone in this type of condition. These keep getting rarer and rarer, because people neglect to fix the battery. As far as editing sounds on the SX210 Ive always found it much easier then on the SX240. Hit a button, then change its parameter with the main data knob. Very fun to program and also has it’s own very unique sound. Awesome for analog strings, pads, and even organs and basses. Truly an underrated classic. ” Link

Kawai, SX-210 @ 02 June 2015, Comments Off on Kawai SX-210

sx-210 “1982 Kawai SX210 — extremely rare analog 8 voice Poly-Synth

Get yourself this beauty— very rare, you won’t see many around !!! if you ever find one they cost a fortune… here I’ll only start a 0.99c

-excellent condition
-few marks on the wood sides-nothing major
-great built quality
-has been fully checked
-no battery issues
-comes with printed manual
-and original sound banks – i could send by email if required” Link

SX-210, Teisco @ 07 April 2015, Comments Off on Teisco SX-210 Project Machine


This unit is sold for parts or repair, and sold as is!

Vintage Teisco SX-210 original patch memory

Check photos for wear and use and details such as scratches and blemishes! Sold for parts, although it does power on, and it is missing some keys! The wood side panels are included! This unit is sold for parts or repair, sold as is…zero returns…your project!” Link

Kawai, SX-210 @ 27 January 2015, Comments Off on Kawai SX-210

sx-210“Condition: Well Cared for Condition in Working Order. There is one key that needs to be pressed harder than the others and one button case is missing which does not affect the function of the button that still works fine. Very little wear on the wooden frame. Very rare to find one in such good order.” Link

Kawai, SX-210 @ 16 December 2014, Comments Off on Kawai SX-210

kawai sx210“Hi, I’m selling my vintage Kawai sx-210 – it’s in perfect playing order with the original patch memory inside.

Check photos for more info on scratched and blemishes, I didn’t overtly notice anything visually damaged on the unit. Looks perfect to me.” Link

Kawai, SX-210 @ 14 October 2014, Comments Off on Kawai SX-210

sx210 “Rare Kawai SX – 210 Poly Synthesizer. Stored in a smoke free pro studio. The battery was replaced and it was serviced prior to buying it last year. Sounds amazing, very unique compared to the Junos and way more scarce. Move forces the sale. I have had no problems with the synth and have used it on many a tracks, great strings (superb with the Ensemble on) and bass. Everything that I can test works. No scratchy pots, faded voice(s), and all the keys work. The wooden end caps could be replaced, never bothered me. If a tact switch has not been used in a while sometimes it may take two pushes, then it works fine from there on. There is a small chip under a key and a few keys have a little play, but function just fine. Keys are still very much playable and smooth (much better then a pro one or some earlier synths). There is a some scattered wear/marks to the front panel, see pictures.” Link

Kawai, SX-210 @ 07 October 2014, Comments Off on Kawai SX-210

sx210“Zum Verkauf steht hier ein Kawai SX 210 in fantastischem Zustand.Nach Schulnoten bewertet ist er technisch eine glatte 1 und optisch eine gute 2.die 2 nur deshalb weil die Holzseitenteile geringe Gebrauchtspuren aufweisen.Der Rest ist wirklich TOP!!!Der SX 210 spielt klanglich mit dem Polysix und dem Juno 6/60/106 in einer Liga.Beide übertrifft er von den Features her aber um einiges.(z.Bsp.Polyphonie)” Link

Kawai, SX-210 @ 23 September 2014, Comments Off on Kawai SX-210

sx210 ” Vintage Kawai SX-210 works great and looks great. I don’t have room for it in my place. Cheers.” Link

Kawai, SX-210 @ 03 June 2014, Comments Off on Kawai SX-210 Project Machine




Kawai, SX-210 @ 25 February 2014, Comments Off on Kawai SX-210

“Front Panel piant work in great condition, memory backup battery has leaked and corroded some of the Circuit board tracks around it, attempted repair failed but have fitted new battery , maybe possible to still get fixed by jumping broken tracks. Was working fine previously, comes with There are one or two dents and marks on the wood effect end boards. Workshop Repair circuit diagram manual, and Owner’s manual, both in very good condition.” Link

Kawai, SX-210 @ 17 December 2013, Comments Off on Kawai SX-210

“This is a 1980’s Kawai SX210 8 voice Polyphonic synthesizer that has been in my collection for while. Was recently serviced by This Old Synth in San Jose and works fine. Local cash and carry is encouraged. Item will be very carefully packed and dispatched promptly via Fedex upon receipt of payment. ” Link

SX-210, Teisco @ 26 November 2013, Comments Off on Teisco SX-210

“Up for sale is super rare Teisco SX-210 Vintage Analog Synthesizer (also known to be manufactured under the name of Kawai).

The unit appears to be fully functional, all the keys and buttons and knobs working fine, as well as Writing / Editing new patch programs.

Cosmetically the unit is in very nice condition as you can see. There maybe some minor wear and marks here and there, with slight damage on the woodend corners as shown, but nothing major at all and obviously have been looked after very well. I’m including plenty of pictures so you can see exactly how it looks.

Power cable included.” Link

Kawai, SX-210 @ 12 November 2013, Comments Off on Kawai SX-210 Project Machine

“Here’s the problem: Every 8th key or 4th key, depending on setting, and maybe other variations of 4 (6 or 16?-not sure) holds onto to a note, so that the notes rings continuously when it shouldn’t. In other words depending on setting, when you go up in keys or down, you will eventuyally run in to a key that hangs on to sound. But which key depends on what your settings are. Then subsequent keys at the same ratio also are affected. Someone told us this is not normal, no matter how it is set, so it would need servicing for full operation. We do not want to open this up and fix, we also know no other reputable keyboard repair places, maybe you are one. May be it’a a battery or easy fix, and this will rock your world, or it may be a piece of junk, with no easy way to fix even though it’s a cool analog synth. Sorry this is outta our league and we know little about keys” Link

Kawai, SX-210 @ 02 July 2013, Comments Off on Kawai SX-210

“Seriously rare analog synthesizer. Super powerful and very unique sounds. This synth works 100%. Professionally checked & the internal battery was also replaced with a new battery (one which will not leak acid on the board). I have owned and come across a lot of synths and this is the first one of these i’ve seen. Only a couple cosmetic issues (see pictures). The front of the side cheeks are a little rough and one of the keys has a little chip out the bottom. Definitely doesn’t effect the sounds or functions. Outside of the battery it’s all original.” Link

Kawai, SX-210 @ 19 February 2013, Comments Off on Kawai SX-210 Project Machine

“This unit is being sold as is….

We powered it up and plugged it in and everything seems to work

but the pots are scratchy and some of the sound do not seem right…

It will need a cleaning in side and out. ” Link

Kawai, SX-210 @ 22 January 2013, Comments Off on Kawai SX-210



missing 2 buttons (see pic)

paint splatters (see pic)

stickers on some keys (see pic)” Link

Kawai, SX-210 @ 20 November 2012, Comments Off on Kawai SX-210

” This synth is not working so sold for spares or repair, it may be something simple as battery to fix but I have not the time to look into this. It’s been tucked away for years in a sealed bag so it’s not been exposed to dust and its in really good condition. When plugged in there’s no sound the increment led lights up but the voice panel does not.” Link

Kawai, SX-210 @ 09 October 2012, Comments Off on Kawai SX-210 Project Machine

“It came into my shop some months ago, and hasn’t gotten around to be fully repaired, cosmetically it’s brand new looking, all keys clean and soft, all buttons present, and the faceplate is perfect and clear. The person who dropped it off said that he had tried to replace the battery himself, and in doing so, failed. It currently does not power on. While it is currently one of the most beautiful things to have in a room, I don’t have the desire or expertise to replace the battery. I’m leaving it in your hands. Good luck, due to the weight of this item/ sensitive analog fragility, I don’t feel comfortable shipping this and is available for local pick up in Philadelphia, PA (where I work) or Wilmington, DE (where I live) Good luck and thanks for looking!” Link

Kawai, SX-210 @ 31 July 2012, Comments Off on Kawai SX-210

“This auction is for a Kawai SX-10 synthesiser in a strong wooden case. This instrument has been in storage for many years but now will not power up. I am therefore offering it for spares/repair with no reserve.” Link

Kawai, SX-210 @ 31 July 2012, Comments Off on Kawai SX-210

“Key Features very good!!!!!!!! condition look very nice sound grate” Link

Kawai, SX-210 @ 05 June 2012, Comments Off on Kawai SX-210

“Liebe Sammler und Freunde des Kultsynthesizers KAWAI SX 210 ,

ich versteigere schweren Herzens diesen wohl meistgesuchten Synthesizer in einem Topzustand, in dem er Höchstwahrscheinlich nicht noch einmal so zu bekommen ist.
Ich besitze Ihn seit 1989 und habe lediglich ein wenig damit rumgespielt.1990 habe ich Ihn dann gut Verpackt und auf dem Dachboden verstaut.
Habe Ihn vor ein paar Tagen ausgegraben und angeschlossen.Anfangs reagierten die Parameterknöpfe etwas schwerfällig aber nach kurzer Zeit war alles ok.
Er funktioniert einwandfrei und liefert bombastische Sounds.” Link

Kawai, SX-210 @ 29 November 2011, Comments Off on Kawai SX-210

“Up for auction is a vintage Kawai SX-210 synthesizer, and a soft shuttle gig case. Believe it or not, I am the original owner! My parents bought this for me in my early teens to keep me interested in piano lessons. It worked. This particular unit was put in my parents basement when I entered the military in 1988, and hasn’t seen any use since then.

I turned it on and all of the memory positions were corrupted. I entered a few patches from the owner’s manual (available here: http://www.kawaius-tsd.com/OM/K_SYNTH/SX210.pdf). and it seemed to work.

First, the issues (that I know of):

Both wood ends are gone. I’ve dome my best to show this in the photo’s
The shuttle gig case foam is shedding like crazy from age. I will ship the sx-210 in the case, but will wrap it first to ensure no foam gets into the synth.
One key only works if you hit the top of the key vs. the bottom (you can see it in the video)
The plastic piece you wrap the power cord is broken
Seems like there is a key randomly pressed when playing with certain programmed patches. May be part of the patch, but I’ve long since forgotten how to program this unit.

Othwerise, my daughters and I had fun dusting it off and playing with it for a few hours.” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 08 November 2011, Comments Off on Kawai SX-210

“In good working condition — all keys work fine, all switches work. Power cable in good condition. ” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 31 May 2011, Comments Off on Kawai SX-210

“Your biddding on a Rare Vintage Kawai SX-210 Synthesizer. This rare vintage Kawai SX-210 synthesizer is in great condition. Easily rated an 8.0 out of 10. The SX-210 is a great sounding DCO based synthesizer with 8 voices ( 1 DCQ and 1 sub oscillator per voice ) analog filters, and envelopes ( 1 of each per voice ). The oscillator has 3 waveforms: SUB-OSC, PWM control, and a noise generator. The LFO can modulate: DCO, VCF, and VCA all at the same time. It is also one of the few synthesizers with both glissando and portamento.

Please note – 1 key does not work and there are some nicks on the woodgrain. (see pics) ” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 24 May 2011, Comments Off on Kawai SX-210

“This rare vintage Kawai SX-210 synthesizer is in great condition and comes with a manual. Easily rated an 8.0 out of 10. The SX-210 is a great sounding DCO based synthesizer with 8 voices ( 1 DCQ and 1 sub oscillator per voice ) analog filters, and envelopes ( 1 of each per voice ). The oscillator has 3 waveforms: SUB-OSC, PWM control, and a noise generator. The LFO can modulate: DCO, VCF, and VCA all at the same time. It is also one of the few synthesizers with both glissando and portamento.” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 22 March 2011, Comments Off on Kawai SX-210

“Sound ist dick analog, habe ihn für Bässe und Flächen eingesetzt.
Sound is fat analog, used it for bass and pads.

Bezahlung via Vorkasse Überweisung oder Vorkasse Paypal
Payment via prepayment bank transfer or prepayment paypal
Synth hat leider eine Schwäche, er spielt nicht immer wenn er soll.
Synth does not play sound sometimes, this is why i sell it as defect.
Deshalb verkaufe ich ihn eher als defekt, allerdings trotzdem keine Garantie, Gewährleistung oder Rückgabe.
No garantee, warrenty or taking back.” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 22 March 2011, Comments Off on Kawai SX-210

“I replaced the RAM battery with a new battery, and all the voices seem to be displaying on the screen, and I tested all the keys to see if they work. All the dedicated buttons seem to be functional, though I am not getting any workable sounds out of it.” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 15 March 2011, Comments Off on Kawai SX-210 Project Machine

“Kawai SX-210 Polyphonic Synthesizer – Vintage Analogue keyboard – with original owners manual

Please note – this synthesizer, while still capable of creating a wealth of amazing sounds, is not in complete working order

All keys, buttons, knobs, sliders and LEDs seem to work – BUT…

Recent inspection of the internal battery has revealed a very small leak.

I consulted a specialist synth repair company who suggested that :

if the synth still works, then it should just be a matter of changing the battery, and cleaning up any corrosion. Assuming, that’s all that needs doing, the cost of getting it back to full working order would be £125. If there were any other issues, then the price would go up, but not over £200.

Preset sounds have been lost as the internal battery was not recharged for a while

The preset sounds can be reprogrammed via the list of sounds in the owners manual or possibly via the tape memory input thingy – I never used the presets anyway – it makes much better sounds when you start exploring the oscillators and myriad other controls.

The only missing item is the knob that sits on the volume slide control (the volume slide control works perfectly well without it)

The successful bidder is very welcome to try the synth before handing over any cash

I dont have an amplifier available at present, but I have a pair of good headphones” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 06 April 2010, Comments Off on Kawai SX-210

” Kawai sx-210, Lights up and makes some strange sounds but unknown condition other than that, so sold as none functional. think some of the jumpers inside might be connected in the wrong order, so trial and error I guess! Theres also a piece of tape holding one of the buttons in place.” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 16 March 2010, Comments Off on Kawai SX-210



MANUAL INCLUDED. POWER AC INCLUDED.” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 05 January 2010, Comments Off on Kawai SX-210

orig “Kawai SX-210 Analog Synthesizer like Juno 60 & Polysix synth

-Great Condition!

-Extremely extremely extremely rare, poorly publicized and marketed upon its release- this is not your common SX-240

-All 8 voices working!

-Original non-leaky battery!

-Recently serviced/shopped in 2009 for several hours ($$$)

-Both knobs present & fully functional bender bar

-All 61 keys fully functioning

-Tons of flashy lights and 2 bright fully functioning screens!

-Features expensive features such as 8 voice polyphony, portamento, glissando, voice selection (stackable voices), 2 ADSR envelopes, name editable patches, highly modifiable VCF (well more than what’s seen on polysix’s and junos- these are features seen on synths such as the Jupiter 8 and more high end analog synthesizers.)

This particular unit is recently serviced and is functional. All parameter buttons seen on the faceplate function, however, about five parameter buttons sometimes require some wiggling to engage. If problem persists in future these can be cleaned relatively easily with standard contact cleaner and a can of compressed air (typical vintage synth maintenance). Few very minor scratches are across the top of the synth faceplate as can be seen in the upper right corner of the first picture below. When serviced two broken keys were repaired and function perfectly. All key contacts work as seen in the demonstration video. Both displays (patch display and parameter edit display) function perfectly and look snazzy. This thing plays great and is easy to program and edit, and it is great with the patch naming function (as seen in the pictures below we named one ebay J ) which was way ahead of its time. Aside from the few buttons that are sometimes difficult to engage, this synth works perfectly!!!” Auction ended. Click here to browse on eBay.

Kawai, SX-210 @ 20 October 2009, Comments Off on Kawai SX-210

The synth is NOT WORKING !!! I have kept the SX-210 for spare parts for my working SX-210. The main problem is the empty memory-battery. No internal functions at all, no sound output – power on is working, everything is lightening up. Conditions see pics!!!!” Auction ended. Click here to browse on eBay.