Well my Mesa D-350 showed up today, a few problems. First the actual Mesa box from Zzounds showed up with the security sealing tape broken all the way around and then retaped so that was a bit disturbing. When I opened the box and got to the actual amp there were smudges and finger prints all over the front black panel, so then I called Zzounds and explained to them that I believed that I had received an open box item. They were willing to take off $60 which I agreed to, however this was the clincher, after getting off the phone with them and feeling pretty good about saving $60 I began to test out and fiddle with the amp.That's when the bright toggle switch came off right in my hands, I was totally shocked. I tried to figure out how to put it back in for about 15 min with no luck and could not even believe it came off in the first place. Then while still trying to get it back on the actual thinner inner toggle fell out also so I just gave up and called Zzounds for a shipping return label. How dissappointing, I was always under the notion that Mesa was solid really dependable gear and then the toggle switch just falls out 5 mins after getting the amp. From what I did hear of the amp in the few short mins I was able to use it I was quite impresssed. Seemed like it had a lot of the nice crystalline top end of my GK MB200 without any of the muddy bottom end. However now my confidence in the reliability of the product is shot! Not sure if I want to try it again, I'm pretty happy with my Aguilar TH-350 which I never had such issues. I just wanted to see what I may be missing with the Mesa and what all the hype was about.