The BOSS AB-2 is a 2-way selector that makes changing inputs or outputs easy. One stomp is all it takes to instantly switch between two guitars or effects setups, change amplifiers or switch between an amp and tuner. Rock-solid BOSS construction ensures the AB-2 will stand the test of time.
Affordable A/B selector with 1-click operation and silent switching
2-way selector for using A/B input with one output, or vice-versa
Instantly change guitars, effects setups or amplifiers, or switch between an amp and tuner
Nominal Input Level
Nominal output Level
A (red), B (yellow)
A jack, B jack, IN/OUT jack
5 mA or less * Expected battery life under continuous use: Carbon: 100 hours * This figure will vary depending on the actual conditions of use.
Dry Battery [R03/LR03 (AAA) type] x 2
Owner's Manual, Dry Battery [R03/LR03 (AAA) type] x 2, Number Sticker
Size and Weight
96 mm 3-13/16 inches
90 mm 3-9/16 inches
43 mm 1-3/4 inches
240 g 0 lbs. 9 oz.
* 0 dBu=0.775 Vrms
*The specifications are subject to change without notice.
If you have questions about operating your BOSS product, please check our Knowledge Base for answers to the most common questions.
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In addition, we have a library of Owner’s Manuals and Support Documents that you can download and reference.