BOSS ME-50B Bass Multi-Effects Processor (ME-50B)

The BOSS ME-50B is a versatile floor-based multi-effects processor designed specifically for bass players who want powerful effects with straightforward, hands-on control. Combining compression, EQ, filtering, overdrive, distortion, synth, modulation, delay, and expression effects in a rugged pedalboard-style unit, the ME-50B provides an extensive range of bass tones without complicated menus or programming.

Its dedicated knobs give players immediate access to individual effect parameters, while three footswitches and an onboard expression pedal provide convenient real-time control during performances. With COSM modeling, creative effects such as Sound Hold and Octave Up, and a built-in Sound On Sound function with Kick Drum, the ME-50B is equally useful for practice, recording, and live performance.

Key Features

• Floor-based bass multi-effects processor with intuitive pedal-style operation
• Designed specifically for electric bass and bass-focused signal processing
• COSM Compressor/Limiter provides smooth, controlled dynamics and punchy bass response
• Dedicated 3-band EQ with sweepable midrange for detailed tonal shaping
• Filter and tone effects include T-Wah, Slow Gear, Octave Up, and Defretter
• Drive section provides multiple overdrive, distortion, fuzz, and bass drive sounds
• Hi Band effect adds distortion to higher frequencies while retaining low-end definition
• Includes four synth bass effects with responsive tracking
• Sound Hold function sustains a low bass note while allowing additional playing over it
• Sound On Sound recording function allows bassists to create layered loops
• Kick Drum effect provides a rhythmic kick sound for loop-based performances
• Easy Tone feature provides preset EQ templates for quick sound shaping
• Six dedicated effect sections provide fast access to different processing options
• Three built-in footswitches provide convenient performance control
• Assignable onboard expression pedal can control effects such as wah, octave, and other parameters
• 23 dedicated knobs allow real-time adjustment without menu navigation
• Solid metal housing provides dependable durability for stage and rehearsal use
• Suitable for live performances, practice, recording, and creative bass applications