For anyone in the St. Louis area who wants to try Phil Jones stuff, they have them at Fazio's on Manchester Rd. near 141. No, I don't work there. I just happened to walk in and there they were. They had the Six Pak, 9B (those were stacked), 24B, 8T, M500 (also stacked), and the Briefcase. I played a little with the basses in the store and then went home to get my bass and my rack. I played all of them but I spent the most time with the Six Pak head running into the 9B (the head in the Six Pak is an M500). I have to say, I think it is a step up from my Demeter / Stewart / Euphonic Audio setup. The Phil Jones rig seemed to be better than mine in every way. Fuller low end, quicker attack, no harshness at all with the EQ set flat (this was with a Modulus Q6 with EMGs and roundwound strings) but still very transparent. I played my rig when I got home and compared to the Phil Jones it sounded slow, colored and harsh. I didn't have my cab there to do a side by side comparison but I brought my rack. I definitely preferred the M500. When driving the 9B with my rack, the sound was noticeably harsher in the treble and not as tight and meaty in the low end. My overall impression was that this is what a bass amp should sound like. I think I know where my next $2000 of bass gear money is going.