The Tech 21 SansAmp RBI Rackmount Bass Preamp packs the power of one of the company's most popular pedals in a convenient rackmount chassis with a new armada of features. Built with all-analog components, the RBI sports 50/50 effects loop, dedicated Mid control, and an XLR output control for maximal performance when going through a PA system. If you're after streamlining your live setup and traveling light, the SansAmp RBI is right up your alley.