@audiosens - I once had a Luxman L530 class a/b amp. It’s running temperature was HOT (enoug cook and egg on it). So I turned it off after use EVERY TIME
- even then it burned through the oil filled heat sink - very messy - and expensive
My NAIM 5i ran cool to the touch all the time
- so I left it on 24/7 and after 11 years the caps fried and $350 later it worked jusrt fine again
- but it should have lasted for 12+ years - it’s no longer with me
- NAIM recommends leaving their amps on all the time
- the CAP replacement is a "feature"
- Now I see why $$$😏
My Bryston B135 runs much cooler , so I do not worry about it, but it is off most of the time.
- I actually found that it runs cooler if I use an excellent quality power cable on it
I would recommend turning your amp off after each use and allow it 10minutes to warm up at the start of the listening session
Regards - Steve