There are pretty good solid state amps (this seems to be one) and there are not so good tube amps as well. I won't mention any names, but there are a few designs out there that are anything but warm and reliable. Most likely, this amp won't "shut down and restart" in the middle of a session like a tube amp I used to have. The Boss Katana doesn't seem to have ice pick problems either. A few tube amps do, in spite of being "tube" amps (supposedly warmer).