
Boss AD-2 Acoustic Preamp Guitar Pedal
Boss AD-2 Acoustic Preamp Effects Pedal, Natural Studio-Quality Sound, Notch Filter, Balanced DI Output
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Acoustic Preamp Pedal
BOSS - AD-2

NATURAL ACOUSTIC SOUND EVERYWHERE YOU PLAYThe BOSS AD-2 Acoustic Preamp enables acoustic-electric guitarists to now experience natural, studio-quality sound while performing on any stage. Featuring an advanced BOSS sound engine, this compact pedal packs complex 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 including 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.
The tone of an acoustic guitar is created by the complex interaction of sounds from its body, top, strings, and other elements. And as you play with varying techniques, dynamics, and more, this interaction constantly develops to create that beloved rich and woody sound. Unfortunately, the standard undersaddle piezo pickups installed on most stage guitars just can’t reproduce this resonant complexity. The AD-2’s Acoustic Resonance effect solves this issue by analyzing the input signal as you play, and then employing advanced processing to beautifully recreate your guitar’s naturally evolving tone. Twisting the one-knob control adjusts multiple parameters inside the AD-2 to achieve the perfect tonal balance for any style, from delicate fingerpicking to intense strumming.
at a glance
• Acoustic-electric guitar preamp with advanced BOSS sound processing
• Sophisticated processing with multiple interlocked parameters, accessible with simple stompbox controls
• Acoustic Resonance reproduces the complex resonance characteristics of an unplugged acoustic
• Ambience knob provides wide-ranging, studio-quality reverb optimized for acoustic guitar
• Normal output for an acoustic guitar amp and balanced DI output for direct PA connection
• Sound mute function for switching guitars and tuning on stage
Enhance Your Guitar

Pro-Quality ReverbAfter using Acoustic Resonance to bring back your guitar’s natural, intimate tone, adding some further depth and dimension with a little reverb gives it some extra life. With the AD-2’s Ambience effect, you can dial in studio-quality reverb for any performing environment.
Unlike standard reverbs that can cloud an acoustic guitar’s sound, the optimized BOSS algorithms in the AD-2 produce lush, deep ambience that perfectly complements your instrument’s voice. Like the Acoustic Resonance effect, a simple one-knob control tweaks many interlocked parameters under the hood, giving you access to a wide range of detailed reverb sounds.
DI Output & Feedback Killer

Crystal Clear SoundThe BOSS AD-2 features two independent outputs for performance flexibility. Connect the Output jack to your acoustic guitar amp or stage monitor, and use the Line Out to send a balanced signal direct to the PA mixer. You can also to turn off the Ambience effect in the Line Out signal, giving the PA engineer the flexibility to add their own reverb at the board. And if you encounter any low-frequency feedback issues on stage, the AD-2’s notch filter has you covered. As soon as you hear that familiar rumble, just turn the Notch knob until it goes away, it's that simple!
Boss AD-2 Acoustic Preamp Performance featuring Dewey

The Tech Spec
Features | Specification | 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 |
Bypass | Buffered bypass |
Controls | Pedal switch ACOUSTIC RESONANCE knob AMBIENCE knob NOTCH knob |
Indicator | CHECK indicator (Serves also as battery check indicator) |
Connectors | 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) AC adaptor (sold separately) |
Current Draw | 65 mA |
Expected battery life under continuous use | Alkaline: Approx. 5 hours *These figures will vary depending on the actual conditions of use. |
Accessories | Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information") Alkaline battery (9V, 6LR61) |
Dimensions | Width: 73 mm, 2-7/8 inches Height: 59 mm, 2-3/8 inches Depth:129 mm, 5-1/8 inches |
Weight (including battery) | 420 g 15 oz |