Ernie Ball Tap Tempo is the perfect companion to the Ernie Ball Expression Series Ambient Delay or any other pedal requiring a standard normally-open momentary footswitch. Tap the switch to set the tempo and hear your delay rate sync up, bringing studio quality, time-based effects to your live performances.

Features:
• Perfect companion to the ambient delay or any other pedal
• Normally open momentary footswtich
• Can be used with a variety of pedal types