I've been using the EBS TD 650 with my band since christmas and just wanted to let everybody looking for a new amp know that they should seriously consider the TD650. I can get a ton of different sounds out of it with the eq. The tone is pretty sweet with the tube engaged. I use a carvin and a pick most of the time and I get plenty of growl and attack with the drive and compressor turned up about 2/5th's of the way up (I play metal so I want the growl and attack). But I could use the amp for virtually any type of music by adjusting the settings. As far as construction, I could probably throw this thing of a building. I'm going into the studio in a week and I can't wait to hear this thing recorded. Sorry to sound like such an advertisement but I'm just really pleased with this amp and I thought more people should be made aware of the quality and versatility of this head. The only problem is finding one to test out in your area.