I played a gig with my new setup: Hartke HA2000 115 1 15" combo with an Acoustic B410 (4 x 10") and a MXR DI M80 and I was blown away with the tone and loudness. I was worried that it wouldn't be loud enough to play with my band, but not anymore. It's rated at 200W at 4 ohms, but the speaker outputs are 8 ohms. When both speaker/cab are plugged in, it is a monster. We didn't have time for a sound check and I didn't know what level to set it at, so I set the volume at 3 to start (makes sense, right?). Three (3) crushed a good-sized club and I think I knocked some fillings out of more than a few teeth. The lead singer turned around and said, "You gotta come down" after I hit the first note, lol. My son heard the booming from the parking garage down the street, lol. I wound up playing the whole night at about 1 3/4-2 tops and the band was still LOUD. Of course, knowing that I have so much headroom makes me more comfortable- and a bit giddy.