MATRIXSYNTH: Sequential Circuits Pro-One - Analog Synthesizer - Pro-Serviced w/Restoration

Saturday, July 04, 2026

Sequential Circuits Pro-One - Analog Synthesizer - Pro-Serviced w/Restoration

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via this eBay listing

Additional Analog U.S. Listings

"This one is in excellent cosmetic condition and working 100%. It is ready to be played and needs nothing! This unit has the earlier, "j-wire" keyboard so it is serviceable if needed in the future. Please mail with any questions. Shipping to most countries! The shipping price listed is just an estimate. If it is less, you will be refunded. NOT SOLD AS-IS!

***This is marked as a USA sale, but I will ship to most countries.***

Cosmetically- Nothing is ever mint in my opinion and this one is no exception. There are some imperfections here and there, but overall I think it looks excellent. All knobs have been replaced, it has new wood sides (walnut), and a new "Sequential Circuits" sticker.

Internally- Apart from any repairs, it's been completely disassembled and cleaned, all potentiometers and switches have been cleaned, it has two new octave switches, all electrolytic & tantalum capacitors replaced (including the power supply), the keyboard rebuilt with new bushings, the j-wires & buss-bar have been hand polished, and it has been fully calibrated. *This may be updated!"

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