It might be that all of you out there are fully aware of this, but in case you are not: By accident, I happened to pull the level knob on my HRM yesterday. I had no idea it could be pulled. The result was stunning. It gave my Les Paul some Marshall-like top that I really like. It also gave my strat a nice "sizzle" on the lead sounds. There is nothing about pulling the level knob in the manual, so I asked Nik. He laughed and said that this is a well hidden secret that can take years to discover. Nic says it is simply a bright switch for the OD channel. I really like it. It would be interesting to hear what other people think of this switch. Guitar sound is a matter of taste after all.