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Average Price: $897

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Description

Discover the Yamaha SK20, a vintage synthesizer that blends the rich tones of analog sound with the versatility musicians crave. Originally released in the early 1980s, this instrument remains a beloved choice for keyboard enthusiasts and performers alike. The SK20 is a multi-keyboard synthesizer that combines organ, string, and polysynth sections, offering a lush tapestry of sounds that can be layered and customized to your liking. Its simple yet powerful interface allows for seamless transitions between sounds, making it an ideal tool for both studio production and live performances.

With its 61-key keyboard, the Yamaha SK20 offers a full range of notes to explore, ensuring that musicians can fully express their creativity. The synthesizer's intuitive control panel makes it easy to shape your sound, whether you're dialing in a classic organ tone or crafting a unique synth patch. Each section of the SK20 can be independently mixed and adjusted, allowing you to create complex soundscapes or focused, singular tones with ease.

Whether you're a seasoned synth aficionado or a newcomer to the world of analog keyboards, the Yamaha SK20's blend of functionality and classic sound makes it a compelling addition to your musical toolkit.

Key Features:

  • 61-key full-size keyboard
  • Combination of organ, string, and polysynth sections
  • Analog sound generation
  • Independent mixing for each section
  • Intuitive control panel for sound shaping
  • Suitable for both live performances and studio use

Product specs

Brand Yamaha
Model SK-20 Symphonic Ensemble Synthesizer
Finish Black
Year 1979 - 1980
Categories Analog Synths, Keyboard Synths
Analog / Digital Analog
Key Size Full Size
Keyboard Action Synth Action
Number of Keys 61 Keys
Polyphony 7 Voices

FAQs

What type of synthesis does the Yamaha SK-20 use?

The Yamaha SK-20 is an analog synthesizer, known for its rich, warm sound typical of vintage analog synths.

How many keys does the Yamaha SK-20 have, and what is their size?

The Yamaha SK-20 features a full-size keyboard with 61 keys, providing a comfortable playing experience for keyboardists.

Is the Yamaha SK-20 polyphonic or monophonic?

The Yamaha SK-20 is polyphonic, offering up to 7 voices, which allows for richer, more complex sounds and chord playing.

What kind of keyboard action does the Yamaha SK-20 have?

The Yamaha SK-20 has a synth action keyboard, which is lighter and faster, ideal for playing fast passages and synth leads.

Can the Yamaha SK-20 be used for live performances?

Yes, the Yamaha SK-20 is suitable for live performances, thanks to its robust build and versatile sound capabilities, including strings, brass, and organ tones.

WilliamSalmela

WilliamSalmela

Synthetic Ensemble (Yamaha SK-20)

Video thumbnail for Synthetic Ensemble (Yamaha SK-20) by WilliamSalmela

Synthetic Ensemble (Yamaha SK-20)

WilliamSalmela

WilliamSalmela

Video thumbnail for YAMAHA SK20 String Machine 1979 | HD DEMO by AnalogAudio1

YAMAHA SK20 String Machine 1979 | HD DEMO

AnalogAudio1

AnalogAudio1

Video thumbnail for Yamaha SK-20 Is The Poly-Synth Of Choice For The Poly-Instrumentalist Willis P. Jenkins by gearwire

Yamaha SK-20 Is The Poly-Synth Of Choice For The Poly-Instrumentalist Willis P. Jenkins

gearwire

gearwire

Video thumbnail for [DEMO]  Yamaha SK-20 -- Symphonic Ensemble -- pure without external FX! by LESINDES

[DEMO] Yamaha SK-20 -- Symphonic Ensemble -- pure without external FX!

LESINDES

LESINDES

Video thumbnail for YAMAHA SK20 SYMPHONIC ENSEMBLE : Sound Check by ita-shin / 板倉真一

YAMAHA SK20 SYMPHONIC ENSEMBLE : Sound Check

ita-shin / 板倉真一

ita-shin / 板倉真一

Video thumbnail for Yamaha SK20 — Sigur Rós Organ, String Machine & Synthesizer by TheGuacamoleXplosion

Yamaha SK20 — Sigur Rós Organ, String Machine & Synthesizer

TheGuacamoleXplosion

TheGuacamoleXplosion

Video thumbnail for YAMAHA SK20 (1979) by Synthesizer Home

YAMAHA SK20 (1979)

Synthesizer Home

Synthesizer Home

Video thumbnail for Yamaha SK20 Symphonic Ensemble - Synthesizer Demo by NGC0 Music

Yamaha SK20 Symphonic Ensemble - Synthesizer Demo

NGC0 Music

NGC0 Music

Video thumbnail for Yamaha SK20 midi demo - Tubbutec TM62100 by Tubbutec

Yamaha SK20 midi demo - Tubbutec TM62100

Tubbutec

Tubbutec

Reviews

PROS

  • Built to last with a solid metal chassis and high-quality components

  • Offers a range of sounds from classic string synths to analog brass

  • Capable of producing nostalgic and rich sound textures

  • Keyboard can split sounds for versatile playing

  • Compatible with external Leslie speakers for authentic organ sound

  • Shockingly stable tuning, ensuring consistent performance

  • Keybed of high quality, comparable to renowned Yamaha models

  • Layering capabilities produce a huge sound through external effects

  • Multiple outputs and pedal connections enhance performance options

  • Features both a built-in ensemble unit and a mono synth

CONS

  • Limited by today's standards with no direct inputs for DAW integration

  • Built-in chorus can be noisy, affecting the string section's clarity

  • Occasional digital aliasing hints at a hybrid sound engine

  • The FM organ section is considered lackluster and sometimes non-functional

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Yamaha SK20.

Setup and maintenance

  • Proprietary Yamaha ICs and obsolete parts like BBD chips pose significant repair challenges; parts can be difficult and expensive to source.

    Source
  • It’s noted that the SK-20 is easy to disassemble for cleaning, with well-labeled boards and connections, facilitating easier maintenance.

    Source
  • Some users experience glitches and detuning issues potentially linked to voltage problems or overheating, advising against leaving the synth on for more than 3-4 hours.

    Source

Features and functionality

  • The keyboard is described as having some sweet spots, especially through voice mixing, and excels with an external chorus for vintage string sounds.

    Source
  • The Yamaha SK-20 lacks MIDI, prompting some owners to explore custom MIDI modifications using microcontrollers and relays.

    Source

User experience

  • The Yamaha SK-20 is considered robust with a very high-quality keybed, though it’s noted to be large and heavy, potentially limiting portability.

    Source
  • One owner mentioned the SK-20 mixes itself well, indicating a seamless integration of its sound layers.

    Source
  • Owners have noticed that moving cables inside the SK-20 can resolve connectivity issues, suggesting a need for careful handling to maintain functionality.

    Source
  • A specific issue involves certain keys only functioning on the 1st, 3rd, and 5th octaves, with abnormal transposing and noise, indicating potential internal connection problems.

    Source

Value and pricing

  • Owners suggest caution with vintage synths due to potential repair costs, recommending a big budget if considering purchase due to likely maintenance needs.

    Source
  • Prices for the SK-20 on Reverb range from $800 to $2200, often found between $1000 to $1500, reflecting its vintage appeal and rarity.

    Source

Mods and upgrades

  • An owner modded their SK-20 for enhanced LFO speed and depth, achieving sounds reminiscent of Boards of Canada.

    Source

Comparisons

  • A user compared the SK-20's sound to the SK-15, noting both have beautiful tones.

    Source

Build quality

  • An owner reported their SK-20 surviving an amp fall, sustaining a cracked circuit board but remaining operational for years after soldering repairs.

    Source
  • Owners report that the SK-20 can emit a strong, unpleasant odor due to dust accumulating on the circuit boards.

    Source

Critic Reviews

Yamaha Symphonic Ensemble SK20 (EMM Mar 81)

muzines.co.uk

The Yamaha SK20 is a versatile synthesizer that successfully blends polyphonic and string sounds with a harmonic drawbar organ, all in a lightweight package. Its array of features, including string chorus effects, Leslie-type tremolo, and a split keyboard mode, make it a strong contender for musicians seeking diverse sound capabilities. The high-quality construction and thoughtful design of the controls enhance its appeal. However, the absence of a case and optional footswitch/controller might deter some buyers. Overall, the SK20 offers impressive value and sound quality for its price, making it a solid choice for those who can overlook its minor shortcomings.

positive

4.5 out of 5

Based on 1 Review and 7 Ratings

5 star
4 star
3 star
2 star
1 star
jimmarchi1

a really great 70s style string machine/mono synth

My friend owns one of these and its in our south philly studio. [Its now mine and is in my home studio] This is worth purchasing for the classic divide-down string section alone. You can get yamaha's version of those string machine tones and with a few fader tweaks go into other turf with the polysynth section (it's really paraphonic but they call it a polysynth). The chorus is lush but subtle, i thought it w as s noisy but the noise wss coming from a dirty pot. The synth is capable of doing the string/synth parts to Steely Dan's "Peg" with aplomb~! Also included is a cheeze ball FM organ. Ours is not working but its nothing to write hoe about on working units though its can do a passable organ in a pinch if you la on the chorus to simulate a leslie. We have never missed this section though. As with all Yamaha gear the keybed is first rate, springy organ action.... this thing weighs a ton. Built to last the ages. Shockingly stable tuning. Worth purchasing. One of the last of the great 'string synths'.

From Gear Setup

Artist usage

Add artist
See how Billy Corgan uses Yamaha SK20

Billy Corgan

Singer, Guitarist

The Smashing Pumpkins

...
Verified via reverb.com

This Yamaha SK20 is owned by Billy Corgan

See how John Dwyer uses Yamaha SK20

John Dwyer

Singer, Guitarist

Thee OhSees

...
Verified via reverb.com

used on Bug On Yonkers as per this'ere 'verb listing

See how PJ Harvey uses Yamaha SK20

PJ Harvey

Keyboardist, Harpist

The Desert Sessions

...
Verified via YouTube

PJ Harvey plays her Yamaha SK20 at the Hay Festival of Literature & Arts on May 26, 2006 and at the Royal Festival Hall on August 29, 2007.

Hay Festival: https://www.youtube.com/watch?v=-Z8rFiaqBSQ Royal Festival Hall: https://www.youtube.com/watch?v=rADQYN380nA

See how Kjartan Sveinsson uses Yamaha SK20

Kjartan Sveinsson

Guitarist, Keyboardist

Sigur Rós

...
Verified via Photo

This 2001 image of Sveinsson features a Yamaha SK-20 in the background, recognizable by its control scheme.

See how Minoru Mukaiya uses Yamaha SK20

Minoru Mukaiya

Keyboardist

Casiopea

...
Verified via Photo

The credits of the Casiopea album Make Up City lists that he used this instrument.

See how Louie Swain uses Yamaha SK20

Louie Swain

Keyboardist

Parcels

...
Verified via Photo

Louie Swain utilizes the Yamaha SK20 during live performances, as evidenced in the "Live Vol. 2" preview shared by parcelsmusic on Instagram.

See how Sonique (Colombia) uses Yamaha SK20

Sonique (Colombia)

Music Producer

...
Verified via Facebook

Use it in studio for organ sounds and polyphonic stabs

See how Gerald Woodruffe uses Yamaha SK20

Gerald Woodruffe

Keyboardist

Black Sabbath

...
Verified via Monorail Music

Gerald Woodruffe is confirmed to use the Yamaha Symphonic Ensemble SK20 synthesizer, as listed in the studio equipment used for the LP "Wonders Of The Underwater World," according to Monorail Music's Mono Staff.

See how Kan Sano uses Yamaha SK20

Kan Sano

Singer, Keyboardist

...
Verified via Photo

Kan Sano has a Yamaha SK20 synthesizer in his home studio, as shown in a user-uploaded photo.

Used With

Based on how musicians on Equipboard use Yamaha SK20, it is most commonly used with the following gear.

Community setups

Show yours
jimmarchi1

jimmarchi1

Gear IQ 41010

teodor_pop

teodor_pop

Gear IQ 135

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