I've had a Triamp for a few years. I remember when I first got it, I could set uop a really nice fat clean and a great OD or 3, and have them at an even volume as I switched. After a year or so, the power tubes went, and the clean channel dropped volume. I ahd them replaced, and again since then, with a full service by a very good tech. But, these days, I just can't get any volume out of the clean channel. I actually dimed the volume and the gain last night to see how loud it could go. I should have been blown off my feet, but I got a moderate volume at the most. The overdirve channel all still work fine, with beastly tone and tons of headroom. I'll get it looked at, but meantime, any hints ??