# Sequential Circuits Pro-One
Pro One, Sequential Circuits @ 08 July 2010
“or your consideration is a very clean Sequential Circuits Pro-One.
The unit has been gently used over the years and shows very little cosmetic wear(see pics).
This is a very early serial number: 0850.
The unit was recently serviced by a professional synth tech, works perfectly, and should be good to go for years.
The side panels have been replaced with a new custom set.
This listing includes the Pro-One only.” Link