at7 in first preamp position for more headroom, my old DRRI sounded great with the 'mid pot' pull mod, tone tubby alnico speaker, upgraded the trannys to larger ones. Toured with that thing for 4 years, sounded pretty fucking great. Always seemed to be on the brink of breaking up, with the above mods, you could play around at the threshold, pretty good squishy cleans, crazy distortion when you got her hot, and breaking up.