SK20, Yamaha @ 16 December 2011, Comments Off on Yamaha SK-20

“This auction is for a vintage Yamaha SK-20 Synthesizer. It features a “Hammond-like” organ section (with “drawbars”), an “Arp-like” string ensemble, and a poly-synth section. These can be mixed and matched at will as each is separate with it’s own volume slider, and the synths and organ sections have separate tuning knobs for near-infinite combination/detuning possibilities. The Leslie simulator and Ensemble effects are quite good! So are the organ percussion settings. The unit shows some cosmetic wear and scratches, and some controls are a bit “scratchy” as is typical with analog gear this old. Unit is fully functional and tested. All buttons/controls work & I was really impressed with the sound quality of this unit while I was testing it!” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 09 December 2011, Comments Off on Yamaha SK20

“This particular synth has some battle scars and is missing the Top B key. Replacement keys are available on eBay.
Some of the control faders are slightly bent, but all work and do not crackle. This is reflected in the starting price.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 02 December 2011, Comments Off on Yamaha SK20

“VINTAGE Yamaha SK20 Symphonic Ensemble Keyboard

Very good condition
Made in Japan
Serial # 929 ALL functions have been tested by our shop and work” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 25 November 2011, Comments Off on Yamaha SK-20

“Yamaha SK-20 Symphonic Ensemble vintage analog Polysynth from the 70s, is capable of mixing synth, organ and string tones, with individual filter sections for Polysynth and Organ and string presets capable of being mixed in (three individual sliders for mix). In addition to the manual filters for Polysynth and Organ, there are also presets for these sections. Vibrato depth, delay and speed sections for Synth and Organ sections, as well as “ensemble” and tremolo modes. it is a large keyboard and you can even select to split the keys with Synth being solely on one half and Organ on the other (one to the right, the other to the left) as opposed to having them mix and blend together.

beautiful electronic sound. In Excellent condition both cosmetically and electronically, only very small patch of Velcro attached off to right, as seen in picture. Tested thoroughly, very stable with warm rich sound. Amazing instrument and sad to see it go.

AUCTION INCLUDES TRAVEL CASE AS SEEN IN PICTURE,
the travel case has a little wear and tear, but is fully cushioned, synth fits snugly etc.
It is a bit heavy, so take that into account for the shipping.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 18 November 2011, Comments Off on Yamaha SK-20

“Funktioniert auch tadellos.
Sieht super aus. Kaum irgendwelche Kratzer oder Ecken.
Klingt fantastisch. Die beste Orgel die ich je benutzt habe.
Wunderbar elektronisch klingende Strings und ein ausgefuchster real analoger Synthesizerteil
machen das Instrument für jeden, der mindestens den Takt halten kann (kein Midi, wie wunderbar),
zu einer Riesensoundmaschine.
Weiterhin gibt es die herrlich ölig klingenden Tremolo und Ensemble Effekte aufschaltbar auf die Klangquellen.
Alle Klangquellen sind stufenlos mischbar.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 18 November 2011, Comments Off on Yamaha SK-20


beautiful electronic sound. In Excellent condition both cosmetically and electronically, only very small patch of Velcro attached off to right, as seen in picture. Tested thoroughly, very stable with warm rich sound. Amazing instrument and sad to see it go.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 11 November 2011, Comments Off on Yamaha SK-20

“This is a 1970’s YAMAHA SK20.
A rare find to say the least.
Condition is good vintage having a chip in the veneer on the rear left corner. Please consider the pictures as part of the description.
Functionality is great. Everything is in good working order. On this board. Electronically sound. ” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 09 September 2011, Comments Off on Yamaha SK20

“Up for auction is this VINTAGE YAMAHA SK20 SYMPHONIC ENSEMBLE SYNTHESIZER, GREAT working condition, excellent cosmetic condition,, everything is original and working as it should.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 19 August 2011, Comments Off on Yamaha SK20

“Ok I’ll admit to not knowing a single thing about this item, other than it’s name and the fact that it works 100% fine. And so I’ve dragged all the info below from a vintage synth website, I think the below covers all the technical details to do with this rare item.

This synth was bought new by my brother in law some 30 odd years ago, and has been used, but very rarely. It’s got a couple of marks on the bottom corners from the stand it used to have, but none other than that. For saying it’s over 30 years old, it’s in very good condition. There are no marks on the top of the unit, or the keys. All the sliders and dials move as they should, and all the LED’s on the buttons that have them work fine.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 22 July 2011, Comments Off on Yamaha SK20

“Wunderbarer Synthesizer aus der guten alten Analogzeit. Vollpolyphon.

Symbiose zwischen 7-chöriger Orgel (mit elektronisch generiertem Leslie-Effekt slow/fast) und String-Synthesizer. Wobei der String-Synthesizer ergänzt wird durch einen recht ordentlichen Filter- und Hüllkurvenbereich (Sektion: Polysynth).
Keyboard kann gesplittet werden und die Lautstärken der einzelnen Segmente (Orgel, String, Polysynth) können natürlich ebenfalls geregelt werden.

Es gibt einen Haufen an Informationen über dieses Instrument im Netz zu finden, daher beschränke ich mich nur auf wenig.

Zustand: Gemessen an der Tatsache, dass das Instrument ca. 35 Jahre alt ist, befindet es sich in einem guten Zustand. Wangen links und rechts haben nur ganz leichte Macken, Oberfläche (Panel) ist sauber und hat keinerlei Rostflecken. Tastatur ist makellos und die Potentiometer sind alle in Ordnung. Nur das Lautstärke-Poti kratzt ganz leicht, das gibt sich aber wieder, wenn der Synth benutzt wird und ein paar Stunden läuft.

Versteigert wird der Synthesizer mit Netzkabel und kopierter, englischer Bedienungsanleitung.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 15 July 2011, Comments Off on Yamaha SK20

“Muss mich umständehalber leider von einigen liebgewonnenen, voll funktionsfähigen Musikinstrumenten trennen.

Hierzu zählt das absolute Schnäppchen: Yamaha SK20 – Symphonic emsemble,

das eine Vielfalt von Möglichkeiten in einem Instrument vereint:

7- chörige Zugriegel Orgel + zwei Percussions Regler

polyphoner String Synthesizer

polyphoner allgemeiner Synthesizer

Alles per Schieberegler einzustellen. Sie sehen also, was Sie machen. Nicht wie bei vielen heute gängigen Instrumenten.

Viele Effekte wie Vibrato, Sustain, Brilliance, alle regelbar.

Der Superklang wird verschönt durch eine Tremolo und Ensemble Sektion.

Sie können die Klänge von Orgel, String und Synthesizer beliebig mischen über Schieberegler.

Die Qualität der Tastatur und aller anderen Features unterscheidet sich deutlich von der heute üblichen „Leichtbauweise“.

Das Instrument ist wohnzimmergepflegt und war nie auf Reisen.

Für Liebhaber aber auch Anfänger das ideale Instrument.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 15 July 2011, Comments Off on Yamaha SK-20

“Up for sale is an used Yamaha SK-20.
It will be sold as-is with the following issues:
– 1 key would not produce any sound when being pressed (as pictured).
– 3 adjuster had broken off (as pictured)” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 15 July 2011, Comments Off on Yamaha SK-20

“Up for sale is YAMAHA SK-20 Symphonic Ensemble Synthesizer in excellent condition.

The unit is fully functional, all the keys and knobs and buttons worked fine when I tested. Cosmetically there are some minor ware and marks, but overall in great shape as you can tell from the pictures.

Comes with Yamaha hard carrying case as shown.
Power cable and Japanese manual included.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 10 June 2011, Comments Off on Yamaha SK20

“Here is a rare beast. The Yamaha SK-20 is a polyphonic analog synthesizer that came out in 1980. This was the golden age for Yamaha Synthesizers between the CS and SK series. The quality and rich sound of these instruments is fantastic and highly desired by synth players and studios around the world. If you search around, you simply cannot find this synth. There are a few up in Japan charging $200-250 to ship to the USA. Obviously you can get a better deal on this one since I am a USA seller.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 22 April 2011, Comments Off on Yamaha SK20

“Up for sale is a cool polyphonic synth from a few days ago. The SK20s, 30s, and so forth were and are very cool and diserable keyboards full of cool sounds and options. This SK20 is fully functional and in great overall condition. The case has a dent around the input/ output section but everything functions correctly.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 22 April 2011, Comments Off on Yamaha SK-20

“I have this priced to sell. This is my Yamaha SK-20. Everything works on it and it looks nearly like new. All keys, sliders, sounds, and effects work. A soft padded case for the synth is also included. There are three keys that sound like their key contacts are a dirty and the volume slider for the organ and strings are somewhat scratchy but do not affect the sound. Those should all be easy fixes.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 15 April 2011, Comments Off on Yamaah SK20

“The SK20 in built like a tank and this one’s in very good condition (especially for a 30 year old instrument) although it has a couple of little dings on the wooden case end-cheeks. Electronically, everything works as it should – although the organ volume fader would benefit fro a quick zap with some switch cleaning spray.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 04 March 2011, Comments Off on Yamaha SK20

“HERE IS A YAMAHA SK20 SYMPHONIC ENSEMBLE ANALOG ORGAN SYNTHESIZER.

IT HAS OUTPUT ON/OFF, MASTER VOLUME. THERE ARE CONTROLS FOR ORGAN, STRING AND SYNTH.

I NOTICED ON THE ORGAN SETTINGS, WHEN IT GETS PAST THE MIDPOINT, IT GETS SCRATCHY. YOU WILL PROBABLY WANT TO CLEAN THE CONTACTS. ALL THE KEYS WORK FINE. ALL THE FUNCTIONS. I NOTICED WERE THE SPLIT IF FROM THE ORGAN TO POLY SYNTH, THOSE BUTTONS WHEN YOU PRESS THEM YOU CAN SEE THEY DROP DOWN A LITTLE BIT. THERE IS A SCREW THAT CAME OFF THE BACK OF THE HOUSING THAT HOLDS THE BUTTONS UP. I HAVE NO TAKEN THIS UNIT APART TO CHECK IT OUT. IT LOOKS LIKE A SCREW MAY HAVE COME OFF THAT HOLDS THE BUTTON ASSEMBLY UP. IT IS NOT AS HIGH UP AS IT SHOULD BE.

THE ORGAN CONTROL ON THE FAR LEFT IS SCRATCHY. THE STRING AND POLYSYNTH SEEM OK. WE TRIED ALL THE KEYS AND THEY WORK. WE TRIED ALL THE DIFFERENT FUNCTIONS AND THEY WORK. THE BAG THAT IT COMES WITH IS TORN UP. I AM SENDING IT WITH THE UNIT SO YOU CAN HAVE IT. ” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 18 February 2011, Comments Off on Yamaha SK20 Project Machine

“Has a cracked key, but in otherwise mostly working order. Keyboard split and external speaker buttons do not engage. ” Auction ended. Click here to browse on eBay.

RX5, SK20, Yamaha @ 11 February 2011, Comments Off on Yamaha SK20 and RX5


Both units POWER UP FINE, HOWEVER, I DO NOT HAVE AN AMP TO TEST the SK20 FURTHER. It was working fine when it was last used several years ago. As with all things vintage these items are SOLD AS IS. ALL knobs sliders, functions and connectors test fine. Some of the vinyl wood finish is scuffed and marred with a few dings. This would not affect playability or functionality. All keys function smoothly and cleanly. ” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 28 January 2011, Comments Off on Yamaha SK-20

“Das Gerät befindet sich in hervorragendem Zustand und ist 100% funktionsfähig! nur minimale Gebrauchsspuren.
ALLE Fotos zeigen das hier angebotene Gerät.

Excellent and 100% working fine condition! ALL pictures showing the offered item.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 03 December 2010, Comments Off on Lot of two Yamaha SK20

“I HAVE TWO YAMAHA SK20 COMBO-KEYBOARDS. THEY ARE BOTH IN EXCELLENT CONDITION AND PLAY PERFECTLY. THEY WERE INTRODUCED IN 1980, AS PART OF THE SK-SERIES AND I HAVE ALL OF THEM . MY FAVORITES HAVE BEEN THE SK20 FOR THEIR EASE OF PLAY AND ADAPTABILITY.
TAKE A LOOK AT WHAT THEY CAN DO ON YOU-TUBE AND BE AMAZED. AND FOR FOR MORE DETAIL ON THESE SYNTHESIZERS CHECK OUT THE SYNTH MUSEUMS ONLINE.
THESE THINGS ARE VERY STURDY, AND BUILT TO LAST. IT HAS STRING SYNTH “VERY SIMILAR TO THE BEST OF THE STRING SYNTHS’. THE ORGAN’S
SOUND ‘IS ALL ABOUT THE 70’S ERA ROCK ORGAN’ AND ‘IT SOUNDS VERY B3 LIKE’. IT HAS A POLYPHONIC SYNTHESIZER WITH FILTER, PITCH, ENVELOPE, AND PORTAMENTO CONTROLS.
ANYWAY, MY FIRST THOUGHT WAS TO SELL THE TWO INDIVIDUALLY , BUT THE MORE I THOUGHT ABOUT IT, SINCE THESE SYNTHS ARE IN EXCELLENT CONDITION AND REALLY VERY REASONABLY PRICED, IT GIVES EVEN THE BEGINNER USER/COLLECTOR, IF HE HAS THE SPACE ,
IN A VINTAGE AND COLLECTIBLE INSTRUMENT, BACKUP POSSIBLITIES FOR ANY REASON.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 29 October 2010, Comments Off on Yamaha SK-20

“This is a Yamaha sk20 in flawless condition – both cosmetically and in all functions. ONE owner for it’s life of 30 years! Apparently it was encased in glass in a climate controlled, 24hr secured museum… because it is in such great shape. That was a joke, minus the fact that it is flawless. No smoking/pets.
Comes with original volume control foot pedal.
Exceptionally well maintained and cared for. Hasn’t gotten much use in the last 2 years, so it has been fully serviced by a keyboard/synth technician… Fully callibrated, All sliders and pots were lubed and are static free and smoth, key contacts were delicately cleaned, although they didn;t need anything more than a slight dustingm and the fuses and power source capacitors were replaced.
No issues, always kept clean. Never taken for gigging or anything. Again, think glass case, in a museum. This is an SK 20 in superb shape.
If you’re looking you know what this is, so I will not bother listing other superfluous info… It’s great, always has been, and could be yours!” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 22 October 2010, Comments Off on Yamaha SK20

“This poly-syth, SK-20 is in used condition(see pics). Its control panel front face is metal. There are some rusty dots on the panel face.
On modulations part, they work fine. There are 2 minor in mod. part. The circular knobs are working fine. The up down knobs are working fine except 1 knob on Organ part. The 16′ knob seems to fade off 20% of it original potential. The pads sections are working fine except on Tremolo mod. part(3pads included SPEED, ORGAN, POLY-SYTH. They show light but does not effect).The keys board working fine, but harder push on 2 keys on the right end(B and C keys)

This Synthesizer uses with 110v. It goes with its original wooden case as in pictures. The locks are working fine. The cover leather are torn some place.
The inside cover is long hairly stuff. This item weights total 23kgs. I believe it goes with classic smell :)” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 22 October 2010, Comments Off on Yamaha SK20

“Has a cracked key, but in otherwise working order.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 15 October 2010, Comments Off on Yamaha SK20

“It also has a external speaker output for a Lesley or similar cabinet. This is a reluctant sale as i’ve had this for years and it’s never let me down. It does have some cosmetic damage (See pic) but all of the functions work and the synth sounds great.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 15 October 2010, Comments Off on Yamaha SK20

“This is a Yamaha sk20 in practically flawless condition – both cosmetically and in all functions. ONE owner for it’s life of 30 years! No smoking/pets.
Comes with original volume control foot pedal.
Well maintained and cared for. Hasn’t gotten use in the last 2 years, so it was serviced by a keyboard/synth technician… All sliders and pots are static free and smoth, the fuses and power source capacitors were replaced.
No issues, always kept clean. Never taken for gigging or anything. This is an SK 20 in superb shape.
If you’re looking you know what this is, so I will not bother listing other superfluous info… It’s great, always has been, and could be yours!” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 10 September 2010, Comments Off on Yamaha SK20

“his poly-syth, SK-20 is in used condition(see pics). Its control panel front face is metal. There are some rusty dots on the panel face.
On modulations part, they work fine. There are 2 minor in mod. part. The circular knobs are working fine. The up down knobs are working fine except 1 knob on Organ part. The 16′ knob seems to fade off 20% of it original potential. The pads sections are working fine except on Tremolo mod. part(3pads included SPEED, ORGAN, POLY-SYTH. They show light but does not effect).The keys board working fine, but harder push on 2 keys on the right end(B and C keys)

This Synthesizer uses with 110v. It goes with its original wooden case as in pictures. The locks are working fine. The cover leather are torn some place.” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 25 June 2010, Comments Off on Yamaha SK20

“Up for auction is a VINTAGE YAMAHA SK-20 ANALOG polyphonic synthesizer! Just got this one back from our regional expert at Keyboard Kastle where I spent the dough to have the switches and sliders cleaned and tweaked -no bad solder joints and the controls are working fine! Plays great! Keys, buttons, and plug-ins are all good. Some chips and scratches on sides as usual for a keyboard of this vintage but overall definitely well preserved & taken care of! Not a museum piece to put under glass but a GREAT PLAYER! ” Auction ended. Click here to browse on eBay.

SK20, Yamaha @ 30 April 2010, Comments Off on Yamaha SK20

“The SK- 20 is an all analog polyphonic synth that has organ, string, and synth sections. These three can be blended together via a built in mixer section. Sound is fat and warm from all sections. The synth’s filter is very musical and deep. The envelope generator for the filter is very shape-able. This synth is tough as nails and would be great for a touring band, given that it is not in museum-piece shape. However, electronically the synth is in very good condition. It does also have all knobs and sliders, and they are all noise-free. It is missing the two highest black keys. The electronic contacts for those work, so they just need keys, which are easily found online. Please bid with confidence, as I have described this well built synth accurately. It should serve someone well for years to come. It will be well packed and shipped promptly.” Auction ended. Click here to browse on eBay.