Caution: Rant! Last year I purchased a new Genz Benz Shuttle 6.0 head. Later in the year, the amp failed at a rehearsal. I was getting a lot of static and crackling. Shortly after, I started getting distortion too. Basically, the amp was unusable. After an email exchange with a music store in another city (there are no authorized service centers in Ottawa) I made arrangements to ship it to them. I decided to try the unit one last time before sending it off and lo and behold, the problem had disappeared! So I didn't ship it (with my luck, it would probably work flawlessly at the shop). I had no further problems until this morning, when I turned it on and heard that same static. The amp hasn't left my house since that fateful rehearsal and it's been sitting in the same location for weeks. I guess I'll have to send it off for repair but I feel like throwing it in the trash and getting something reliable. My Carvin BX500 had issues but the repair process was much simpler (they send a pre-paid postage label to ship it back to them).