“Timmy Overdrive — the newest version — now with a different taper on
the treble knob. Same
value pot — but a linear taper. The builder explained it as finally
being
able to get the perfect amount of treble in your signal. This version
was apparently made shortly after the “Surf Green” version.”
Thorough discussion on the differences between the Timmy V1 and V2 can be found here.