I had recently bought an HD210 as a stand alone for small gigs not thinking I would be playing with a very loud drummer and a half stack. The people I was playing with on this night looked a bit skeptical and were unsure of my ability to hold the bottom and being tuned to drop C I was curious myself how this was going to go. I turned my little mark 3 up almost half way hit a note and shook everything in the immediate area. We were playing a quite heavy and very loud part and not only could I hear my bass with no problem I could feel it moving the air and giving a good ribbing to the floor upon which I stood. The tonal quality and volume is second to none, this is an amazing cabinet and worth every penny. Jim you have really outdone yourself, keep up the good work that we appreciate so much.