Thanks, guitarman8! Great thread, gives me some more stuff to try next time I pull the chassis. I played out last night, and this is just such an excellent sounding amp! Also versatile... does an amazing clean as well as some nice non-scratchy overdriven sounds, WITHOUT an outboard pedal. With a good pedal, I use an Xotic BB Preamp Overdrive, not set really hot, and it's a thing of great beauty!