The Rackmount SansAmpJust like its exceptionally popular pedal predecessor, SansAmp RBI offers you an entire sound spectrum of the most coveted traditional and modern bass amp systems - including mondo overdriven tones that typically require a complex mass of gizmos that weren't even designed for bass in the first place. Sample settings, such as SVT- style, Bassman-style, King's X-style, and Crimson-style (to name a few) are included in the owner's manual to get you started.Familiar controls Drive adjusts the overall amount of gain and overdrive; Presence brings out the upper harmonic content and attack; Blend allows you to mix the direct instrument signal with SansAmp Tube Amplifier Emulation circuitry; and active Bass and Treble controls cut or boost +/-12dB.What's new? SansAmp RBI features a dedicated Mid control; individual Level control for the XLR out to optimize your amp's output relative to the P.A. system; Effects Loop; Mix 50/50 switch to