Create and Perform in the Moment

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.

Standard Features:

All-in-one bass processor with premium BOSS amps and effects

Easy stompbox-style sound creation with an intuitive knob-based interface

Superior sound quality with 24-bit AD and 32-bit DA conversion, 32-bit floating-point processing, and 48 kHz sampling rate

61 effects from the BOSS bass effects library

Ten onboard AIRD preamp models including newly developed types

Dedicated preamp section plus six simultaneous effect categories with multiple types to choose from

Edit parameters, swap out preamp and effect types, and more with BOSS Tone Studio

Eight multi-function footswitches and an expression pedal with toe switch

36 ready-to-play preset memories and 36 user memories for storing custom setups

Manual mode for pedalboard-style operation and Memory mode for switching complete setups

Blend knob for mixing in the direct bass sound

Stereo 1/4-inch outputs and mono XLR balanced output with ground lift switch

Rear-panel switch to optimize the 1/4-inch audio outputs for a bass amp or full-range sound system

Send/return loop for external pedals

Light, durable design and colorful status LEDs

Load up to three user speaker IRs

Powered via four AA batteries or optional AC adaptor

USB-C connector for communicating with BOSS Tone Studio and audio recording/playback with music production software

Download and share ME-90B Livesets on BOSS Tone Exchange

Optional Bluetooth Audio MIDI Dual Adaptor allows you to edit sounds and stream audio from an iOS or Android mobile device

SPECIFICATIONSSampling Frequency: 48 kHz

AD Conversion: 24 bits + AF method

AF method (Adaptive Focus method) 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: +7 dBu

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

SIZE AND WEIGHT:

Width: 443 mm (17-1/2 inches)

Depth: 220 mm (8-11/16 inches)

Height: 67 mm (2-11/16 inches)

Maximum Height: 93 mm (3-11/16 inches)

Weight (including battery): 2.9 kg (6 lb 7 oz)