Boss ME-90B | Bass Multiple Effects | Performer tool for Bassists

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

BANKâ–¼/AMP/EQ switch, BANKâ–²/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

* 0 dBu = 0.775 Vrms