Building upon the knowledge and experience gained from V-Guitar technology, Roland developed all-new COSM Bass technology to power the new V-Bass. COSM Bass technology can process a standard bass guitar with a GK-3B or compatible Divided Pickup to sound like a variety of other basses-including acoustic upright bass, fretless bass, a variety of classic electric basses, synth bass and more-and you can even design custom basses by combining different body types and pickup configurations. Of special note is the polyphonic pitch shifting, which can re-pitch individual strings for instant alternate tunings and wild sound effects.

As a recording and performance tool, the V-Bass stands alone. Thanks to COSM Bass Amp Modeling, the V-Bass can precisely model the sound of classic and modern bass amps, from "Concert" and "Session" models to "T.E.", "Bass 360" and others. Dial in the tone of these models like the originals, then pair them with a variety of modeled speaker cabinets. The effects section features wah, modeled overdrive/distortion, compressors, extensive EQ, delay, chorus, reverb and more.

The V-Bass was designed by bassists, for bassists. So it features things like an XLR output for connection to PA or studio console, a 4-, 5- or 6-string Select function for accurate detection of string spacing, and a direct 1/4" input for access to the COSM Bass Amp Modeling and effects sections using a standard bass guitar output.