The BOSS AW-3 Dynamic Wah pedal gives guitarists 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.
 
-On/Off Foot Pedal switch
-Mode knob
-Sens knob
-Manual knob
-Decay knob
-1/4" mono Guitar and bass input jacks
-1/4" mono output jack
-1/4 EXP/CTL jack
-DC 9V 50 mA power in jack
-Buffered bypass
-Alkaline battery: Approx. 8 hours