I got this amp not long ago and it's killer. Great sound and lightweight. From what I was told, this is the earlier more powerful model. I don't have any literature to back this claim up, but the head is 600w. Shows usual wear from gigs and practices. $700 obo picked in Columbia sc. If you pay for shipping, packing and arrange pick-up I'll ship. Pics later upon request. No trades since I'm funding an upright.