Introducing the ME-90B, a free-flowing ME processor filled with pro performance tools for bassists. Extend your creative range with 61 effects optimized for bass. Shape your core tone with 10 bass preamps crafted with our latest AIRD technology. Connect to stage amps, house PA systems, and computers. And with the hands-on interface, expression pedal, and direct-access footswitches, you can create and perform in the moment with nothing to slow you down.

Specifications

Sampling Frequency
48 kHz
AD Conversion
24 bits + AF method
AF method (Adaptive Focus method) This is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD converters.
DA Conversion
32 bits
Processing
32-bit floating point
Effects
93 Types
Memories
36 (User) + 36 (Preset)
Phrase Loop
38 sec. (MONO)
Internal Tuning Detection Accuracy
±0.1 cent
Nominal Input Level
INPUT: -10 dBu
RETURN: -10 dBu
Maximum Input Level
INPUT: +7 dBu
RETURN: + 7dBu
Input Impedance
INPUT: 1 M ohm
RETURN: 1 M ohm
Nominal Output Level
OUTPUT L/MONO､R: -10 dBu
PHONES: -10 dBu
SEND: -10 dBu
BALANCED OUTPUT: -10 dBu
Output Impedance
OUTPUT L/MONO, R: 1 k ohm
PHONES: 44 ohms
SEND: 1 k ohm
BALANCED OUTPUT: 600 ohms
Recommended Load Impedance
OUTPUT L/MONO, R: 10 k ohms or greater
PHONES: 44 ohms or greater
SEND: 10 k ohms or greater
BALANCED OUTPUT: 600 ohms or greater
Controls
BANK▼/AMP/EQ switch, BANK▲/MOD switch, CTL/BLEND switch,
MEMORY/MANUAL switch, 1/COMP switch, 2/FILTER switch,
3/DRV/SYN switch, 4/DLY/REV switch, PEDAL FX switch,
GND LIFT switch, AMP/LINE switch, POWER switch,

EXIT button, WRITE button, CTL button, EDIT button,

PREAMP TYPE knob, BASS knob, MIDDLE knob, TREBLE knob, GAIN knob, LEVEL knob,
MOD TYPE knob, TYPE knob, RATE/TIME knob, DEPTH/DUTY/FB knob, E.LEV/RESO knob,
BLEND knob,
COMP/FX1 TYPE knob, SUSTAIN/LOW/-1OCT knob, ATTACK/HIGH/-2OCT knob, LEVEL/DIRECT knob,
FILTER/FX2 TYPE knob, SENS/RATE/KEY knob, TONE/DEPTH/HRM knob, PEAK/LEVEL/RESO knob,
DRIVE/SYNTH TYPE knob, DRIVE knob, TONE knob, LEVEL knob,
DLY/REV TYPE knob, TIME knob, FEEDBACK/TONE knob, E.LEVEL knob, OUTPUT LEVEL knob, PEDAL FX TYPE knob

PEDAL FX pedal
Display
7 segments, 2 characters (LED)
Tuning guides (LED)
Connectors
INPUT jack, OUTPUT (L/MONO, R) jacks, SEND jack, RETURN jack: 1/4-inch phone type
BALANCED OUTPUT jack: XLR type
PHONES jack: Stereo miniature phone type
USB COMPUTER port: USB Type-C(R)
Bluetooth ADAPTOR connector: Dedicated connector
DC IN jack
Power Supply
Alkaline battery (AA, LR6) x 4
or
AC adaptor
Current Draw
195 mA
Expected battery life under continuous use
Alkaline battery: Approximately 6 hours
* This can vary depending on the specifications of the batteries, capacity of the batteries, and the conditions of use.
Accessories
STARTUP GUIDE
Alkaline battery (AA, LR6) x 4
Leaflet "USING THE UNIT SAFELY"
Options (sold separately)
AC adaptor: PSA-S series
Bluetooth(R) Audio MIDI Dual Adaptor: BT-DUAL
Carry Bag: CB-ME80,CB-BU10