I have a Warwick Thumb BO 6 Broadneck.
The bass alone has a killer tone.
If you love the growl and mids of your 400RB, and just want more headroom, the 700RB amp will be the better option. The bonus part is a contour knob, presence knob, plus Direct out for PA or FOH.
If you are not worried about the growl, and just want more headroom, the 1001RB-II amp is perfect. Gives you more headroom to be nice and thick for R&B. You will probably reach 50% of the amps volume before needing more in a live situation, I could be wrong though.
The MB series amps are great sounding and back savers, they seem to get deeper and smoother. Also, the Micro Bass amps in general are fairly new, the RB amps have been tried and true as far as reliability and durability.
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Last edited by orangejulius3 : 01-17-2014 at 06:35 PM.