🙋🏻‍♂️ Welcome and Foreword

Hello and welcome to my Reverb Shop!
Thank you for your interest in this listing. Every instrument I offer comes from my private collection and is treated with great care and respect. Each instrument is thoroughly checked and tested to ensure full functionality and excellent condition.

Before any instrument is listed for sale, it goes through a professional multi-stage inspection by our technician. Only after successfully passing all functional and visual checks is it approved for listing.

I am aware that my prices may be above average, but this reflects my commitment to transparency, careful preparation, and customer satisfaction. Packaging alone takes 2–4 hours, with multiple layers of protection to ensure safe and worry-free transport.

Quality — both of the instruments and my work — is my top priority. I am always available to answer questions and ensure a smooth buying experience.
Enjoy reading the description.

🎹 Information about the Item for Sale

I am offering a Yamaha SK-20, a unique analog combo synthesizer and stage keyboard from the late 1970s, combining monophonic synth sounds with organ and string ensemble sections.

Released in 1979, the SK-20 features a monophonic analog synthesizer engine for leads and basses, along with a fully integrated polyphonic string ensemble and organ sections. Its warm analog tone, simple layout, and hands-on controls make it ideal for studio work, live performance, and retro-inspired productions.

This unit is in very good condition, showing only normal signs of age-related use, and has been fully checked and tested by our technician. It is ready for immediate use in the studio or on stage.

Please note: this listing is for the instrument only.
No additional accessories such as stands, manuals, or cases are included — only the Yamaha SK-20 itself and the power cable.

⚙️ Specifications

• Type: Analog combo synthesizer and stage keyboard
• Year: 1979
• Polyphony: Monophonic synth section, full polyphonic strings and organ
• Oscillators: 1 VCO for synth section
• Waveforms: Sawtooth, square
• Filter: 24 dB/oct low-pass for synth section
• Envelopes: ADSR for synth section
• LFO: Modulation for synth section
• Effects: Ensemble effect for strings, vibrato
• Keyboard: 49 keys
• Sound sections: Synth lead/bass, polyphonic strings, organ
• Modulation: LFO and pitch controls for synth section
• Sound character: Warm, lush, versatile, classic Yamaha

The SK-20 is especially known for its fat analog leads, creamy string pads, and rich organ tones, making it a highly versatile vintage instrument.

📹 Video Before & After Purchase

Any interested buyer is welcome to request a video demonstration of the instrument.
Additionally, each buyer receives a detailed functional check video before shipping, so you can see and hear your Yamaha SK-20 in operation.

If any issue is discovered during the inspection, the instrument is immediately handed over to our technician.

💲 Prices

It is very important that my instruments go into good hands.
• Price proposals are welcome
• If you are seriously interested, feel free to make an offer
• Reasonable proposals will always be considered

⚠️ Information

• All my instruments come from my private collection
• The collection is continuously updated
• Each device is cleaned, tested, and carefully prepared for sale
• Instruments are wrapped to protect against dust and damage

📦 Secure Packaging

• Each instrument is carefully packed to arrive in perfect condition
• Multiple layers of protection are used
• Photos of the secure packaging method are included in the gallery

💢 Shipping

• Best, fastest, and safest shipping option selected per destination
• Fully insured shipping
• Export documentation included if required

⚡ Power and Connection

• EU power plug included
• Non-EU buyers can use a suitable adapter or voltage converter if needed

💯 Your Advantages

✅ Professionally checked instruments
✅ Tested and cleaned
✅ Worldwide insured shipping
✅ Export documents included
✅ Verified seller
✅ Secure payment

✅ Animal-Free & Non-Smoking Household

⛔ What are you waiting for!?
The Yamaha SK-20 is a versatile vintage classic — just one click away 😉