Yamaha CS-80 – Extensively Serviced | Exceptional Original Condition | Collector's Example

Opportunities to acquire a Yamaha CS-80 in this condition are becoming increasingly rare.

This instrument comes from a private vintage synthesizer collection and has been comprehensively serviced to address the well-known reliability issues associated with the model, while remaining remarkably original cosmetically.

Technical Condition

This CS-80 has undergone extensive preventative servicing by a specialist technician, including:

• Rebuilt power supply with modern capacitors.
• Replacement of all failure-prone tantalum capacitors with modern equivalents.
• Replacement of every 4000-series logic IC across all logic boards, with all new ICs installed in sockets for easier future servicing.

In total, well over 100 components have been replaced, representing more than 200 hours of professional technician work.

The result is an exceptionally reliable CS-80 with the common age-related electronic issues already addressed.

The only known fault is that the aftertouch on the highest G key does not respond. The key itself functions perfectly and plays normally—only the aftertouch sensor for that single key is affected.

Aside from this one issue, every voice, function, switch, slider, button, and key operates correctly.

Cosmetic Condition

Cosmetically, this is one of the nicest CS-80s you are likely to find.

The instrument retains its original tolex, which is in excellent condition with only light signs of use consistent with its age. There are a few small cosmetic marks on the cabinet (please see the photographs), but overall the synthesizer presents beautifully and has clearly been exceptionally well cared for throughout its life.

Included with the instrument are:

• Original legs
• Original sustain pedal
• Original case wheels

Finding a complete, original example with these accessories is increasingly uncommon.

Collection & Shipping

The synthesizer is located in Luxembourg.

Given the weight (approximately 100 kg), personal inspection and collection are strongly encouraged. Buyers are welcome to test the instrument thoroughly before purchase.

Worldwide shipping can be arranged at the buyer's expense. Please note that fully insured shipping for an instrument of this size and value is necessarily expensive. While the synthesizer will be professionally packed, it should be understood that, like any vintage analog synthesizer, tuning or calibration may require minor adjustment after transport.

Please feel free to get in touch with any questions.

A rare opportunity to acquire one of the most iconic polyphonic synthesizers ever built—professionally serviced, exceptionally original, and ready for both studio use and serious collecting.