Several years ago I had a bass amp- I had overheating problems with it- the store I bought it from took it back and gave me a HELLA deal on an amp by the same company. I had overheating problems with that. I loved the way the amp sounded, it just happened to overheat and go into thermal shutdown at gigs. I didn't have any other problems with any other amps with the same basses and cabinets- just these two amps from this one company. Now- that company had been around for 20 some years by that point, that model of amp had been in production for around 10 years at that point, there were hundreds, if not thousands of happy customers. Of course, this was the early days of Internet forums- but it seemed my experience was a serious outlier in relation to other people's experiences with those amps.

I can't imagine my use of the amp was beyond what that amp was designed for, I don't think I pushed it THAT hard (one 4 and one 8 ohm cab run in stereo at stage volume with 3, 4, or 5 piece bands with PA support) it was always stored properly, it was mounted in a rack as intended... while there have been other reviews of the amp running hot- I don't see bunches of reviews about the amp going into thermal shutdown. At this point- almost 20 years later, I accept it was either me, my gear or those two particular amps. I still think the amp sounds phenomenal; I've made a bunch of modifications to the amp (and my rack) over the years to improve cooling air flow- I haven't had any problems with it since then, however, I also don't play out as often as I used to.