Until December 14 2026, purchase any BOSS pedal and go into the running to win a Dream BOSS Board - up to $3,000 RRP of BOSS gear, picked entirely by you! Every pedal purchased is another entry: buy in-store and scan the QR code at the counter, or buy online and complete the entry form via the promotion entry page. Full terms and conditions are available on the Roland website. Offer ends December 14, 2026.
The MD-500 stands as BOSS's most comprehensive modulation pedal, housing 28 cutting-edge algorithms within a single, studio-grade unit. Built with advanced 32-bit AD/DA conversion and 96 kHz sampling throughout, this pedal surpasses industry standards to provide pristine audio quality that rivals the finest professional studio hardware. The extensive collection includes both innovative Prime algorithms and faithful recreations of legendary effects like the CE-1 Chorus Ensemble, Roland Dimension D, and classic '70s script phasers.
Every algorithm has been specifically developed for the MD-500, covering essential modulation effects from chorus, vibrato, and flanger to tremolo, rotary, and ring modulation. BOSS's new Prime technology reimagines traditional effects with enhanced expression and extended parameter ranges, including unique controls like "Bell" and "Sweetness" settings. The pedal also features distinctive BOSS originals such as the Slicer with programmable custom patterns and the coveted Dimension D recreation that adds studio-quality width and depth.
The A/B Simul mode allows simultaneous operation of two patches in series or parallel configurations, whilst the external loop provides flexible routing options for drive pedals on a per-patch basis. A large LCD display shows patch information and simplifies parameter editing, complemented by intuitive panel controls and USB connectivity for computer-based editing via the free MD-500 Editor/Librarian software. With selectable true-bypass or buffered operation, the MD-500 adapts to any setup whilst maintaining signal integrity.
- 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