Bass stack with SWR SM900 head, 900 watts bridged or 450watts x 2 with separate EQ and volume for each channel. Speakers are SWR Goliath II 4x10 and SWR Workingmans 15. Everything works and sounds good. The input gain knob is a little scratchy, but OK once its in place. Amp has two banks of semi-parametric EQ filters and SWR's Aural Enhancer. It's a little scratched up but still kicking. The speakers sound great. I used to use it with a band, but don't need it any more. Call Jackson at 916 two oh seven 4253.