I have a Markbass F500 and two Aguilar GS112's that I just started using as my main rig. I play in two bands and it was fine for my main acoustic based (with drums) band but last night my very heavy handed drummer buried me. It has been a long time since I was outgunned volume wise on a gig. This drummer is loud and way too loud for my liking but I can usually keep up with him but last night he lowered the boom. Running the F500 through both 8 ohm cabs I expected the full 500 watts and may have had it but it was not enough. I had the the master up all the way and the gain at 75%. I was audible but had no head room. I think maybe the two 112 cabs were just not pushing enough air. I may try another cab or amp on the next gig. I was thinking of getting a Tone Hammer 500 but I have heard that they were not as loud as the Markbass? So any suggestions of what I could be doing wrong or what I could change to get more oomph out of this rig?