Only the Right Dedicated Amplifier Fuse is Blown from being peaked at some point. I've used it for 7-8 years at Church festivals and it kicks. It has 12 channels and built in effects and graphic equalizers. You can daisy chain 4 speakers off of the left channel with 2 on the Left 1 and 2 on the Left 2 output. Or if you have powered speakers you can use the Left and Right Line Out that bypasses the internal Amplifier's. OR insert by shielded cords to the Power Amplifier's Input. Pick up and Cash only. Oh and a simple fader cap is gone, not an indication to a non existing issue to the channel itself, I just simply fell off once and never found it.