The KAC40 is a portable, rechargeable, 40W combo amplifier specifically tailored to acoustic guitar featuring built-in effects and mic capabilities. The guitar channel features dedicated volume, tone and chorus/delay/reverb effect controls. The mic channel offers volume and its own separate reverb adjustment. Plug your favorite music player into the back-panel Aux input to add background accompaniment when needed. On your guitar enjoy individual reverb, delay and chorus controls. Separately adjust the reverb on your vocals for just the right blend.