I'm sure everyone is familiar with the BBE pre. This IS the tube version not the solid state. I have a Groove Tube in there now but I also have a Electro Harmonix, NOS 70's GE and another Grovve Tube that I will be including also (4 tubes total) The Mackie is 1400 watts 4 ohm bridged 1000 watts 8 ohm bridged 500 + 500 stereo 4 ohms 300 +300 stereo 8 ohms has variable horn EQ, sub woofer crossover, low pass filters and XLR thru outputs. This amp will run at 2 ohms all night as well. Mainly looking to trade for a combo (pre/power) head. I will also consider cash offers but a trade would be easier for me. I figure the whole rig is worth about 650 bucks give or take. Pics can be sent on request but I'm sure you all know what they look like. If you need specific pics of the backside or connectors just drop me a PM.