With the AD-2 Acoustic Preamp, acoustic-electric guitarists can now experience natural, studio-quality sound while performing on any stage. Equipped with an advanced BOSS sound engine, this compact pedal packs sophisticated processing power that belies its small size and simple, intuitive interface. Acoustic Resonance reproduces the complex resonance characteristics of your unplugged tone, while Ambience provides pro-level reverberation perfectly optimized for acoustic guitar. The AD-2 also features essential stage tools such as a notch filter for feedback control, a balanced DI out for direct connection to a PA, and a convenient mute function for tuning and switching guitars.

Boss AD-2 Acoustic Preamp

  • Nominal Input Level

    -20 dBu

    Input Impedance

    10 M ohms

    Nominal Output Level

    OUTPUT jack: -20 dBu
    LINE OUT jack: -20 dBu

    Output Impedance

    OUTPUT jack: 1 k ohm
    LINE OUT jack: 600 ohms

    Recommended Load Impedance

    OUTPUT jack: 10 k ohms or greater
    LINE OUT jack: 600 ohms or greater


    Buffered bypass


    Pedal switch
    AMBIENCE knob
    NOTCH knob


    CHECK indicator (Serves also as battery check indicator)


    INPUT jack: 1/4-inch phone type
    OUTPUT jack: 1/4-inch phone type
    LINE OUT jack: 1/4-inch TRS phone type
    DC IN jack

    Power Supply

    Alkaline battery (9V, 6LR61) or Carbon-zinc battery (9V, 6F22)
    AC adaptor (sold separately)

    Current Draw

    55 mA

    Expected battery life under continuous use

    Alkaline: Approx. 6 hours
    * These figures will vary depending on the actual conditions of use.


    Owner's manual
    Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information")
    Alkaline battery (9V, 6LR61)

    Option (sold separately)

    AC adaptor (PSA series)


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