BOSS MD-500 Modulation Multi-Effects Pedal. The ultra-versatile MD-500 delivers nearly any type of modulation effect a musician could want, and then some. Included are 28 different algorithms with intensive programming parameters, offering a nearly limitless sound palette to create with. And with class-defying 32-bit AD/DA, 32-bit floating point processing, and 96 kHz sampling rate throughout, you'll enjoy pristine sound quality that extends beyond the capabilities of the very best studio hardware. • Studio-level sound with first-in-class 32-bit AD/DA, 32-bit floating point processing, and 96 kHz sampling rate• 12 modes and 28 modulation types, all with deep editing parameters• Classic mod effects and BOSS originals, newly enhanced with cutting-edge technology• A/B Simul mode for using two patches at once, with your choice of series/parallel connection and mixed or split A/B output• Insert Loop function allows you to use mod effects before, after, or around drive pedals• Graphic LCD and intensive real-time control options• 297 onboard patch memories and hands-on controls• Selectable buffered-bypass or true-bypass operation• MIDI I/O for interfacing with MIDI control devices• USB-MIDI for connecting to the MD-500 Editor/Librarian or a DAW• Runs on four AA-size batteries or PSA-series AC adapter