I have a whole trace stack ah3007 into two trace 4x10s. On thursday night I did a gig using an Amepg 4x10 and 1x15 at first i thought excellent I can use an Ampeg. When I plugged in I thought..........my bass sounds pretty crap it sounded muddy and overall it was just plain. I did another gig on friday night and I used my trace stack and my bass just sounded 100000 times better than the ampeg. I found I cut through a hell of a lot more with the trace than the ampeg. Im not putting ampeg down but just saying my experiences.