Boss AW-3 Dynamic Wah billings it allows your original signal

it allows your original signal to be blended back in so you can get all the benefits of a great compressor (picking up the notes that aren’t as strong and increasing sustain) but have the option to remove the squash at the front

uncolored signal transfer is essential for a tuner

Reinforced headstock and neck support protects your instrument at its most vulnerable point

Relay true-bypass switching doesn’t affect your tone when disengaged

Lower internal voltages = lower dissipation = longer component life

Boss AW-3 Dynamic Wah billings it allows your original signalThe BOSS AW 3 Dynamic Wah pedal gives a wide range of classic auto wah and dynamic wah effects, plus a new "Humanizer" effect which can simulate human vowel sounds. A Bass input provides a variety of funky wah sounds for bass guitar. MODE knob SENS knob MANUAL knob DECAY knob Power Supply: 9V Alkaline Battery (included) or AC adaptor 9VDC (sold separately) Current Draw: 40 mA Boss AW 3 Dynamic Wah Owner's Manual