Picked one up finally this weekend and I have to say that I am impressed. The sweeping sound of the Fasel inductor is definately "classic". It sweeps the frequency spectrum perfectly, seemlessly and smoothly. Seems to be built pretty good. It incorporates a DPDT switch which is supposed to be hardwired for true bypass when off. I haven't opened it up to check on this but as far as I can tell it doesn't degrade the signal at all. With it on or off the effect is wonderful. I was reluctant to spend over $100.00 for that type of effect but I'm very pleased with it.