I'm sure a lot of users already know this, but, if you are playing through a SM-900, be sure that the Effects Blend knob is in the 12 o'clock position. Even if you are not using the effects loop, for some reason the sound is MUCH "fuller" at this position, regardless of the other settings. This seems to hold true at least for the 5 or so SM-900s I've played through. I fear that a lot of salespeople may not be aware of this and some potential buyers are not hearing the amp. as it should sound. I'm also curious if anyone is using the effects loop for live playing situations. If I use an effects pedal (like bass OD) through the loop, the "wet" signal is very week, and I always go back to putting the pedal between the bass and amp. And you?