Well, I've pulled the trigger and bought a new Carvin R600 -- decided against the 1000w version since it doesn't properly utilize my 8-ohm 500W 1-15. SO: I'm putting up my trusty '95 Carvin PB500 amp to help finance the new purchase. All in excellent working order (I just wanted the R600's newer features and the 2-rackspace chassis), used, never abused. 2 x 175W into 8 ohms, 2 x 250W into 4 ohms, 500w into 8 ohms min bridged mono. Bass, mid-sweep, mid level, treble knobs; 5-band graphic EQ; 1-knob compressor; noise gate; push DEEP switch, push BRIGHT switch. Biamp selector swich, crossover knob, HIGH level to balance biamp. Effects loop. 3-button FS-36 footswitch does volume boost (level adjustable by trimpot on back of amp), graphic EQ in/out, and effects loop in/out. 1/4" and XLR direct outs, pre/post-EQ switch. Hi & Lo outs, Hi & Lo power amp ins. You can even take the direct out into a board, then send the whole board back through the two power amps to run the PA (yes, I've done it!). 3-space rackmountable, and I will ship in the wood black Duratuff (bristly carpet) amp case if you like. Original papers and manual. If you want to see the manual, I'll scan & email a copy. This is a really cool, flexible, and powerful amp for not a lot of scratch: $300 firm plus shipping. If you're in the area, you can pick up in Chicago NW burbs; if you're extra nice I may consider a personal delivery!