Play fretless bass? This reverb pedal brings that extra zing to your sound. The BOING is a simple one knob recreation of the classic spring reverb. It is just a single knob reverb for either more or less. Setting past 12 O'clock introduces a slight delay for that extra depth. Price includes shipping to US Only. Cash, credit card, or PayPal. Made in California Specifications Dimensions: 4.00″ x 2.30″ 9 volt Negative tip adaptor and a 5.5mm x 2.1mm jack. 9 volt Battery True Bypass Switching