I've had my trusty giggin' amp for ~5-6 years now. Up until recently I was stuck in my ways. I always tweak knobs slightly every time I turn it on, but I have a starting point that I stick tend to stick to. With most guitars I find the Top Boost channel is great with the EQ knobs set somewhat like a V (bass rolled off w/ treble bump) and the channel volume 3/4 up. I then adjust the master to suit the setting and the tone cut to trim off the talons, or sharpen them depending on the guitar. Recently, I've seen some folk swear that diming the master and adjusting the channel volume for desired volume/tone is the way to go. Needless to say I'm gonna give it a go tonight at rehearsal. But, I was interested in everyone's take. Would operating the amp in this manner make the amp act as if it has no MV? Like some fender amps? Basically putting the channel volume in control of overall volume + dirt? Gonna give it a whirl! What do ya'll think about your AC15s or how to achieve your desired tone? Thanks!