The Mooer Audio Envelope Analog Auto Wah is an analogue auto-wah pedal for guitar and bass featuring controls for Sensitivity, Q, Decay and along with true bypass switching. The Envelope is a pocket sized envelope filter/dynamic auto-wah effects unit with plenty of tone and versatility. The sensitivity control allows you to dial in the effect to respond to the dynamics of your playing and the pickups of any instrument in the way you want it to. Exaggerated slap back funk, subtle sultry ambience, static frequency filter effects and many more are easily obtainable with this pedal. The 100% analogue circuit provides a lush warm sound and the wide range of the controls make the Mooer Audio Envelope Analog Auto Wah ideal for use with both guitar and bass.