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“A rare early serial number 1981 Sequential Circuits™ Pro One. Serial #249. Made in San Jose, California USA. This is the J-bar edition with a smooth, well functioning keybed. All keys engage and stay engaged. Synth is fully functional, as is the sequencer, no stratchy pots. Only a few scratches here and there (see last three pictures for scratch and dings). All in all in really great condition, a well keep and great example of a classic american analog mono. Comes with factory manual and ships free in the lower 48, International Shipping available.” Click here to search for synths on eBay

“SEQUENTIAL CIRCUITS
PRO-ONE SYNTHESIZER
INCLUDING ORIGINAL BOX AND MANUAL!!
Serial #6750 Circa 1982
*** THIS IS THE LOWEST PRICE I WILL GO- LAST CHANCE!! ***
*** FREE SHIPPING if final price goes over $1600
*** 2/16/ 2018 – I have added pics of the wood sides and the original box

This is one very CLEAN Pro-One!! Just serviced and ready to go! Every feature works great.
Not only that, I have the ORIGINAL MANUAL, WOOD SIDES and the ORIGINAL BOX with the correct serial numbers.
I also will include a spec sheet and pamphlet about the Pro One.

ALL of the oscillator chips were replaced (including the LFO) with NOS CEM chips.
Also the power supply was checked out, tuning calibrated and I have replaced ALL of the keyboard’s rubber bushings.
This Pro-One has the more desirable “J-Key” type keyboard which is considered much more reliable.
Once I replaced the bushings the keyboard was a LOT quieter and had a much better feel to it.
Repair work was professionally done by DFX in Salt Lake City (they make great boutique pedals too!).
Cosmetically a 9+ out of 10 it is a beautiful thing to behold! There are normal wear and tear marks on the wood sides (which can easily be sanded out).
Awesome powerful sound, very ballsy and aggressive with its famous modulation capabilities,sequencer and arpeggiator.
Note: There is one knob currently missing (the volume knob) but I will purchase a replacement for the winning bidder and have it sent directly to you.
This is a great example of 1982 synth technology, VERY RARE and COLLECTIBLE, ESPECIALLY SINCE I HAVE THE ORIGINAL BOX it came in and the ORIGINAL MANUAL as well.” Click here to search for synths on eBay

“Hi and thanks for checking out our Listing for

1982 Sequential Circuits Pro One 37 Key Synthesizer – Stunning!

In near mint condition, the only mark on the entire synth, is one tiny chip from the left hand wooden end cheek, otherwise, this superb one owner example is as new throughout.

Supplied with:

Original Operation Manual with the original purchase receipt stapled to the inside/back cover

A couple of original write-ups from the time of sale

A dozen or so sheets of Blank Preset diagrams to help you save your favourite sounds when you stumble across them.

Operationally, this synth is perfect and works as if it were brand new out of the box. We have made just one improvement. The keys were a little sticky from lack of use, so we’ve added individual cork buffers to every key. The key-bed was removed to fit these and they have been fitted between the key stops and the framework, giving the key return a much softer feel. All keys were then individually height adjusted so they rest perfectly flat across the register. We think there is no better example out there.” Click here to search for synths on eBay