Musitronics Mu-Tron Bi-Phase with Opti-Pot Pedal oos We also have an original

We also have an original Korg S-2 Dual Footswitch available - see the listing here

So you can rest assured that when you buy a TS (ThunderStorm) subwoofer from EVE Audio

We've been restoring and selling these machines for many years

aside from looks

Woofer-change dip switch (left <-> right positioning)

Musitronics Mu-Tron Bi-Phase with Opti-Pot Pedal oos We also have an originalServiced, calibrated converted to 240v and in full working order sounds superb. Complete with the rare Opti pot pedal that really releases the full potential of what is without doubt one of the greatest phasers of all time (it's in our top three for sure). The condition is very good with the usual signs of age. There are some scratches, scrapes and dings to the case and knobs, but overall it presents very well. Click on the photos to zoom in and see