Now that I've sunk into the sub-contrabass realm I'm needing a rig to faithfully reproduce those horrible, below standard four string frequencies. Here's what I'm considering: Carvin R1000 Red Line Series III 1000 Watt Bass Amp Head Yeah, I know Carvin is a dark horse to some around here, but I played through one at the Bass Summit and really loved the tone. Lots of pro level features in one unit. 12AX7 Tube Emulator Circuit (better sounding, no tube maintenance) Noise Gate Compressor Bi-amp CROSSOVER sweepable from 200 to 2k Hz High current Twist-Lok speaker connectors Direct Out Freq. Resp: 20Ð20k Hz (Low F# = 22 Hz) Madison Speakers MAB183 Subwoofer One thing I've discovered in my "sub search" is that most cabs out there labelled "subs" won't even faithfully reproduce an open B (31 Hz)!! Bassist extraordianire, AL Caldwell really sings the praises of the Madison cabs. Gonna call the company next week and get the ball rolling. Fantastic value 20 - 2000 Hz freq response. Aguilar GS210 2X10 Cab. I really liked the sound of xush's 4X10 he had at the Summit.