via this auction
Perfect Circuit Audio (RSS)
"The unit is 100% functional and was just fully serviced. All sliders were taken apart, cleaned and re-lubed and it was completely gone through/calibrated. The keyboard has all new bushings as well and play great. It has the following modules (4017 VCO's, 4012 Filter, 4010 VCA's, & 4016 Noise Source) It will come as shown below in the pics so take a peek."
