The Boss GT- 6B Bass Effects Processor corrals all the favorite four-string sounds in one streamlined and easy to transport command center. Summoning the power of Composite Object Sound Modeling (COSM) technology, players can finely tweak a platoon of reverb, chorus, distortion, and compression with a bank of presets to save your favorites. Not just an effects monster, the GT-6B includes modeling for six iconic bass amps various speaker configurations. Whether you're a pedal aficionado or looking to up your effects game, this bass processor delivers an entire world of low-end sounds.