I've decided to sell my Mesa/Boogie M-Pulse 600. This is a fantastic amp with a lot of very useable features. The amp itself is in fantastic condition, and I just replaced the two 12AX7 preamp tubes about a month ago with new stock direct from Mesa/Boogie. The product page for this amplifier is located here: http://www.mesaboogie.com/Product_Info/Bass_Amps/M-Pulse-600/M-Pulse-600.html Specs: 2 - 12AX7 Preamp tubes 3-band pre-EQ (active bass/treble, passive mid) 5-band parametric EQ section compressor solo-channel footswitch (EQ, Compressor, Solo, Effects) adjustable level DI out active/passive inputs 600 watts @ 4 ohms (sounds VERY loud) front and rear venting No pictures of the amp right now, but I'll be able to post some tonight or tomorrow. Until then, rest assured that this amp is in immaculate condition. Asking price is $900 shipped to the lower 48 US. If you're outside of the lower 48 US, please contact me via talkbass or at firstname.lastname@example.org to discuss pricing. Thanks for the interest!