I'm pretty new at all this so I'm still fiddling with my knobs (insert dirty joke here). One of my learning resources suggests turning your instrument pre-amp up all the way before turning up your amp volume. In the past, I've always avoided turning the instrument volume up all the way. I tried it last night and liked the sound. So I guess the question is actually: is there any reason not to do it? (Technical stuff: bedroom player w/ Ibanez SR400, Acoustic B20 watt combo amp) I hope this is in the right place; it seemed more of a technique question than an amp question. Thanks in advance for all your help.