# Roland TR-606
“This 606 is in perfect working condition, the only issues include a noisy master volume knob (which can be serviced easily and only occurs when it is touched) and battery acid stains in the battery compartment and on the case. The stains are purely cosmetic, the previous owner had operated it with the stains for many years and had no functionality issues, neither have I and I have owned this unit for close to a year. It runs on batteries and saves patterns great.” Link