This is a great piece of kit but at a school rehearsal it gave up the ghost (On its maiden voyage so as to speak) Wasn't there when it happened but word is that on changing its fuse one of the staff reported that it died. We suspect there is something wrong with the electrical wiring at the socket point we use in the assembly hall. We are having it checked out. From now on we are using an anti surge socket. As to the quality of this machine, in the few hours trial that it worked, we were more than pleased. Very pleased with Amazon's response when I asked them about the warranty looking for a repair as it is over 30 days since we got the amp. They have despatched a new amp and are making it easy for me to return this one. Thats service above the call of duty if you ask me. Glad to be getting this amp replaced with the same amp because its a great piece of kit for the money.