ok, took my kern pre to my usual tech, cause there seemed to be something rolling around inside the chassis. i'm not a tech, and i dont play one on tv, so i let my trusted man deal with it. was told that the effect loop's tube wasnt even connected to the rest of board! but after he did, the kern now sounds rather mushy w/ the low B. i.e. if i hit the pre hard enough, suddenly, the low B just sounds rather mushy mouthed and overdriven. i tried changing out the V1 w/ a JAN philips 12ax7, and its much tighter now, but my demeter pres are dramatically tighter and punchier. changed out the other tubes including the EHX 12ax7 in the kern's loop, and still kinda mushy. any other tech wanna gimme a hand?