I had a Threshold 4000 amp(ClassA) for nearly 40 y...recapped once, never a single problem....only recapped as a precaution....Nelson Pass claims capacitor life much longer than many say....currently using Pass Labs X250.8...it does improve as it warms up, so I routinely turn it on about 30 m before listening....the amp runs warm to touch,NOT HOT, and of course the temp equilibrates throughout the unit....it is designed for that heat, and I have no doubt its life span will equal my prior Pass design.....
Heat in class A equipment
Heat is one of the biggest enemies of electronic equipment. Does anyone know if this Heat is only at the output transistors and their heatsinks o8is it also present in other components within the unit.
I was planning to remove the top cover and with a IR thermometer going to check temps..
Has anyone done this?