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The MS-3 Multi Effects Switcher is a new-concept pedalboard solution that maximizes your creative options by combining a world-class multi-effects engine and multi-pedal switcher in one small, dedicated unit. Now, anyone can put together a professional effects system that’s incredibly compact, extremely light, and versatile enough to achieve nearly any sound imaginable. The MS-3 is a sonic powerhouse capable of running six internal pedal effects at once while seamlessly integrating three of your favorite external pedals. It also offers deep rig control capabilities, allowing you to switch amp channels, adjust effects in real time, work with MIDI devices, and more. With the MS-3, it’s easy to create a portable board or fly rig without the compromises associated with traditional loop switchers and all-in-one multi-effects units.

Boss MS-3 multi-effects switcher pedal/stompbox

SKU: ms3


    Memory mode/Manual mode



    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

    Sampling Frequency

    44.1 kHz


    112 types



    Nominal Input Level

    INPUT: -10 dBu
    LOOPS L1--3 RETURN: -10 dBu

    Maximum Input Level

    INPUT: +7 dBu
    LOOPS L1--3 RETURN: +7 dBu

    Input Impedance

    INPUT: 1 M ohms

    Nominal Output Level

    OUTPUT L/MONO, R: -10 dBu
    LOOPS L1--3 SEND: -10 dBu

    Output Impedance

    OUTPUT L/MONO, R: 1 k ohms

    Recommended Load Impedance

    OUTPUT L/MONO, R: 10 k ohms or greater
    LOOPS 1--3 SEND: 10 k ohms or greater


    Number switches 1--4, MEMORY/MANUAL switch
    ON/OFF button, MENU button, EDIT button, EXIT button, ENTER button
    1--3 knobs
    POWER switch


    Graphic LCD (132 x 32 dots, backlit LCD)


    Number indicators 1--4, MEMORY/MANUAL indicator
    On/Off indicators (FX1, MOD1, L1--3, FX2, MOD2, DLY, REV)


    INPUT jack: 1/4-inch phone type
    LOOPS L1--3 SEND jacks: 1/4-inch phone type
    LOOPS L1--3 RETURN jacks: 1/4-inch phone type
    OUTPUT (L/MONO, R) jacks: 1/4-inch phone type
    CTL OUT CTL1/2 jack: 1/4-inch TRS phone type
    CTL IN EXP1 CTL1/2 jack, CTL IN EXP2 CTL3/4 jack: 1/4-inch TRS phone type
    USB COMPUTER port: USB type B
    MIDI OUT connector
    DC IN jack

    Power Supply

    AC adaptor