Boss' most powerful reverb effects pedal yet, the RV-500 serves up twelve reverb modes and 21 new reverb algorithms, leaving you with unlimited options.Unrivalled in terms of power with its 32-bit AD/DA coupled with 32-bit/96 kHz floating point processing.Onboard you will also find external footswitch/expression control, a USB connection and MIDI I/O connectivity. Boss Product OverviewJourney to new dimensions of time and space with the RV-500, the most powerful and versatile reverb processor BOSS has ever produced. This multifaceted creation machine features class-defying 32-bit AD/DA along with 32-bit/96 kHz floating point processing and immense programmability, putting pro-level studio reverb and more at your feet.Twelve modes and 21 newly developed reverb algorithms deliver a huge range of textures, from complementary ambience to deep, immersive sonic atmospheres. And thanks to the RV-500s high-octane DSP, you can access a full-featured digital delay along with every reverb patch,