• Multi-effects made simple
• Independent COSM compressor/limiter and EQ
• Get creative with cool filter and tone effects
• Incredibly warm overdriven sounds and more
• Sound on sound with a twist

A Bass Player's Dream Come True. The BOSS ME-50B puts world-class bass effects in a rugged floor unit with easy pedal-style control. Effects are divided into six sections -- Compressor/Limiter, Master, Filter/Tone, Drive/Synth, Delay/Modulation and Expression Pedal -- giving bassists a range of unique and powerful tones including new effects like Sound Hold, Octave Up and Kick Drum. Effects can be edited using 23 knobs and controlled via three built-in footswitches and an assignable expression pedal. This is the piece no bass player should be without!

Floor-based bass multi-effects processor with easy analog control
Killer COSM Compressor/Limiter and Drive effects, plus T-Wah, Slow Gear and Defretter
Innovative Sound Hold function for sustaining a low note while playing on top
Sound On Sound recording with new Kick Drum effect for keeping time
Dedicated knobs for each effect section -- no menu-surfing!
Easy Tone effects with Preset EQ templates for quick tone editing
3 footswitches and onboard expression pedal routed to 6 options like Octave, Wah, etc.
Solid metal case built to withstand abuse

AD Conversion
24 bit + AF method*
DA Conversion
24 bit
Sampling Frequency
44.1 kHz
Patches
24 (user)
Effects
Compressor / Limiter
Filter / Tone: T. Wah, Octave (Up / Down), Slow Gear, Defretter, Enhancer, Bottom Boost, Mid Shape, Hollow
Drive / Synth: Overdrive / Distortion, Bass Synth
Delay / Modulation: Delay, Phaser, Flanger, Chorus, Reverb
Noise Suppressor
Master EQ
Effects for Expression Pedal: Foot Volume, Wah, Resonance, Bend (+1 OCTAVE, -1 OCTAVE), Sound Hold, Kick Drum
Nominal Input Level
INPUT: -10 dBu
AUX IN: -10 dBu
Input Impedance
INPUT: 1 M ohms
AUX IN: 100 k ohms
Nominal Output Level
-10 dBu
Output Impedance
2 k ohms
Display
7 segments, 1character LED
Connectors
INPUT jack
OUTPUT jacks L (MONO)/ R
AUX IN jack (Stereo Mini type)
PHONES jack
FOOT SW (COMP ON/OFF, TEMPO)
AC Adaptor jack
Power Supply
DC 9 V: Dry batteries (R6/LR6 (AA) type) x 6, AC Adaptor (PSA series: Optional)
Current Draw
140 mA
Accessories
Owner's Manual
Dry Batteries (Alkaline: LR6 (AA) type) x 6
Options
AC Adaptor: BOSS PSA series
Foot Switch: BOSS FS-5U
Size and Weight ( incl. batteries )
Width
384 mm
15-1/8 inches
Depth
225 mm
8-7/8 inches
Height
78 mm
3-1/8 inches
Weight
3.2 kg
7 lbs.