The BOSS ME series has been a favorite of performing guitarists for over three decades, combining multi-effects power with intuitive hands-on control for crafting tones in seconds. The ME-90 is the most advanced ME model to date, offering exceptional audio quality with 24-bit AD/DA and 32-bit floating point processing, flagship-grade AIRD amp models, IR loading, an effects loop, and more. Compact, battery-powered, and filled with premium BOSS tones, this versatile all-in-one processor makes it easy to build customized sound setups for every playing situation.

Standard Features

• All-in-one guitar 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/DA, 32-bit floating-point processing, and 48 kHz sampling rate
• Eleven onboard AIRD amp models and 60 different effects derived from the flagship GT-1000
• Dedicated amp section plus seven simultaneous effect categories with multiple types to choose from
• Edit parameters, swap out amp and effect types, and more with BOSS Tone Studio
• Eight multi-function footswitches and a newly redesigned expression pedal with toe switch
• Manual mode for pedalboard-style operation and Memory mode for switching complete patch setups
• Rear-panel switch to optimize the audio outputs for a guitar amp or full-range sound system
• Load up to three user speaker IRs with the ME-90 IR Loader software for Windows/macOS
• Send/return loop for external pedals
• Light, durable design and colorful status LEDs
• 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-90 Livesets at BOSS Tone Exchange
• Optional Bluetooth® Audio MIDI Dual Adaptor allows you to edit sounds and stream audio from an iOS or Android mobile device

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 and DA converters.
• DA Conversion: 24 bits
• Processing: 32-bit floating point
• Effects: 97 Types
• Memories: 36 (User) + 36 (Preset)
• Phrase Loop: 38 sec. (MONO)
• Tuner Internal Detection: +/-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
• Output Impedance: OUTPUT (L/MONO, R): 1 k ohm
  PHONES: 44 ohms
  SEND: 1 k ohm
• Recommended Load Impedance: OUTPUT (L/MONO, R): 10 k ohms or greater
  PHONES: 44 ohms or greater
  SEND: 10 k ohms or greater
• Controls: BANK DOWN/AMP switch, BANK UP/EQ switch, CTL/REV switch,
  MEMORY/MANUAL switch, 1/COMP switch, 2/OD/DS switch,
  3/MOD switch, 4/DELAY switch, PEDAL FX switch,
  AMP/LINE switch, POWER switch,
  
  EXIT button, WRITE button, CTL button, EDIT button,
  
  PREAMP TYPE knob, GAIN knob, BASS knob, MIDDLE knob,
  TREBLE knob, LEVEL knob,
  REVERB knob,
  COMP/FX1 TYPE knob, SUSTAIN/SENS/-1OCT knob,
  ATTACK/TONE/-2OCT/DEPTH knob, LEVEL/PEAK/DIRECT knob,
  OD/DS TYPE knob, DRIVE knob, TONE knob, LEVEL knob,
  MOD TYPE knob, RATE/KEY knob, DEPTH/HARMONY knob,
  E.LEVEL/RESONANCE knob,
  DELAY TYPE knob, TIME knob, FEEDBACK knob, E.LEVEL knob,
  OUTPUT LEVEL knob, PEDAL FX TYPE knob,
  
  PEDAL FX pedal
• Display: 7 segments, 2 characters (LED)
• Connectors: INPUT jack, OUTPUT (L/MONO, R) jacks, SEND jack, RETURN jack: 1/4-inch phone 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: 190 mA
• Expected battery life under continuous use: Alkaline battery: Approximately 6.5 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