Hey there! :) I have bought a very similar one (almost exactly the same in fact, just the PUs on mine are black). I still haven't quite figured what's what, it's all a bit confusing with the switch and pots... It's basically unplayable with all knobs at full (way too loud for any tube amp), also the PU switch seems to switch sometimes in series and sometimes in paralell (not shure whitch is whitch tho). And the 2-way switch - is it like a treble boost, or what is it? I AM CONFUSED :D I wonder, what settings do you use on the controls for various sounds? Any help will be very appreciated.