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Yamaha SK20

“Very Good Condition: This synth is in very good condition overall. Everything is 100% original and all of the sliders, buttons and knobs sound clean and healthy.” Click here to visit listing on eBay

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Yamaha SK20

“For auction is a vintage Yamaha SK20 analogue synthesiser. It’s one of the combined organ/synth/string machines characteristic of the mid to late 70s. A full description appears on the Vintage Synth Explorer Site and there are a couple of demos on YouTube. It’s similar to but different from, synths like the ARP Omni, Roland RS 505 etc. etc. and somewhat rare these days.

It includes a very effective (for its time) Leslie simulation and ensemble effect which produces the classic string synth sound. Limitations of 70s technology however mean the Leslie and ensemble effects can’t be run simultaneously but there’s nothing to stop use of external processing (I suggest an external Leslie pedal on the organ output such as a Korg G4 so you can use the ensemble effect on the strings and synth). There is also a rear output for connection to a real Leslie speaker but I’ve never been able to test this as I have no access to a cabinet.

Everything else works fine, but please bear in mind it’s over 40 years old. These synths are capable of producing some very haunting sounds when run through external effects and sound nothing like modern instruments. I found it works particularly well with the new Boss Dimension C pedal left on its ‘D’ setting.

The synth section is rudimentary compared to what’s available today and it’s paraphonic as opposed to truly polyphonic. It’s very useable however and as is typical of these keyboards, shines when the different layers are combined. The organ section is excellent in my opinion, particularly given its age.

This is a Japanese model and therefore operates on 100V. It runs quite happily off a small step-down auto-transformer which I’ll include.” Click here to visit listing on eBay

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Yamaha SK20

“Yamaha SK20 Symphonic Ensemble Vintage Analogue Synth String Machine And Organ.

In need of a service.

It is partially working the synth and filter work and do does the string section.

The ADSR of the synth doesn’t seem to work.

The organ sounds wrong and the string section is intermittent.

Great buttons are not working but the cream buttons seem to function correctly.

Sold as seen with no returns.

Will be extremely well packed for postage.”

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Yamaha SK20

“This is a fantastic synth that I’ve had for over 20 years. It has been gigged quite a bit and various musicians have given it a hard life. I do not have the time to repair it myself so it needs to go to a new home.

Faults of which I am aware:
* There is some damage to the PCB near the master volume controls which I have bridged
* Poly synth control faders jumpy
* Lots of crackle on all the faders
* three faders totally snapped off. (can be moved with a small screwdriver or a large finger nail)

happy to use courier of your choice or royal mail, or you can pickup in person. ”
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Yamaha SK20

“Yamaha SK20 Vintage Keyboard Synthesizer in 100% functional condition. The sliders and pots have been cleaned and they have no scratchiness to them. The synth was also fully calibrated in the last year. The case has some rust and pitting, but there is no corrosion on the electronics inside.”
Click here to visit listing on eBay

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Yamaha SK20

“The SK20 is a three section analogue poly synth, having organ, string and synth sections. The three sections can be balanced individually and there is full control over the organ and synth sections , a lesser degree of control on the strings. All functions work as intended.

Its a great synth and sounds amazing with the ensemble function switched on. It also has outputs for a Leslie speaker.

Its in n ice condition. One of the wooden end caps has had some damage on the lower edge (pictured) but this has been stabilized and painted over to prevent any more crumbling of the wood. The front panel is nice and clean and has very few scratches.

Selling since I have an SK50D so don’t really have a need any longer from my other SK synths.”
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Yamaha SK20

“Keyboard is in perfect working condition! All controls and functions work.All keys work. Some sliders may need deoxit from time to time. Some nicks in the wood grain on the ends. Look at the photos! The photos are part of the description! Sold AS-IS. No returns unless grossly misrepresented.”
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Yamaha SK20

“The Yamaha SK20 is a 61 key, 7 voice analog ensemble synthesizer, featuring organ, string, and poly-synth sections, dedicated organ and string/synth brilliance, tremolo, vibrato, string and mix volume pedal inputs, and dedicated Polysynth, Organ, and tone cabinet outputs. The synth section also features a slow attack button, release, and a resonant low pass filter with dedicated ADSR envelope. The organ section features 7 stops and an (AR) envelope.

These synths are super cool and will certainly only go up in value.

Plug it into a delay pedal and lose yourself for a few hours!!” Click here to visit listing on eBay

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Yamaha SK20

“Combo-keyboard with poly-synth, organ and string sections. Fully working. Very good condition considering its age.

Really love this item, but just don’t have the space for it anymore. Looking for a good home!”
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Yamaha SK20

“Combo-keyboard with poly-synth, organ and string sections. Fully working. Very good condition considering its age.

Really love this item, but just don’t have the space for it anymore. Looking for a good home!” Click here to visit listing on eBay

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Yamaha SK20

“Combo-keyboard with poly-synth, organ and string sections. Fully working. Very good condition considering its age.

Really love this item, but just don’t have the space for it anymore. Looking for a good home!” Click here to visit listing on eBay

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Yamaha SK20

“Used(Very Good)
perfect working condition
This unit was overhauled by professional technician.
with ORIGINAL CASE.” Click here to search for synths on eBay

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Yamaha SK20

“Item has been heavily used. Some keys don’t work, missing a few knobs, the sliders are noisy, there’s a weird poly-synth function that switches on. Screws are missing. Long Story Short it needs a tune up. It does power up and play with most functions intact. Amazing analog growl. ” Click here to search for synths on eBay