Caline Hot Spice Wah Volume Pedal Small and Versatile Wah Wah mode and Volume mode 2-in-1 The response of Wah is based on the original Crybaby response Active volume mode will keep lossless tone. Small size, will fit most pedal board configurations Powers by 9V (Negative center) Power. Adapter - (not included)- available on Amazon Video link: https://www.youtube.com/watch?v=5MqgEbJ98Bo