Original and genuine Rolf Kelch Ambiance power supply/controller. This was from a customised Rolf Kelch Thorens TD126 Mk3 that was damaged beyond repair during delivery.Im not sure which other Thorens its suitable for and any modifications that may need to be made.It has a 230vac input and a 5 pin DIN plug output to player. the front has a 3 position rotary switch as follows; - Top - Single Dot - Middle-Bottom - 2 Dots As I never got to test the system I cannot confirm what the switch positions are. I thoyght maybe 33/off/45rm but the table already had these buttons.