I may regret this, but I think I'm ready to part ways with my DB 680. Most of you know what this is, if not, visit aguilaramp.com. Aesthetically the amp is near perfect, and it has just returned from the shop, where they replaced a transformer (I think) and gave the whole unit and the tubes a clean bill of health. I'm only selling because my power amp broke down, and I just bought a new double bass. Instead of a new power amp, I'm going to give the solid-state Aguilar amps a try. If I had a few more bucks, I would never sell this. No trades, unless it's Aguilar. US$1200 + shipping.