I use this amp since 1992 and it dropped me once and it was in 2003 after 11 years. Must say that I've put him in the face, I put a mixing desk input connected to an electronic drum kit and we made a dozen repeated like this, full ball. I reported for repair-fi system, two weeks after I get it for repair of 40 euros and with a pure sound. In short it's good stuff, it still works today, not a concern.