I agree. It's not a refrigerator. Doesn't need to be left on 24/7. I typically turn my system on about an hour before listening. Also, for class A amps, that seriously shortens circuit and part lifetimes if left on with that current and heat.
For tube equipment, unless there is a standby circuit, it makes absolutely no sense to leave tubed equipment on. As long as they are on the tube life slowly goes away. For expensive power tubes, that is a no brainer.
The Krell FPB 400 has a slow start circuit that protect circuitry from power on surges. So, turning it on/off isn't a problem. Also as mentioned previously, if it has a standby circuit, that solves the problem.
enjoy
For tube equipment, unless there is a standby circuit, it makes absolutely no sense to leave tubed equipment on. As long as they are on the tube life slowly goes away. For expensive power tubes, that is a no brainer.
The Krell FPB 400 has a slow start circuit that protect circuitry from power on surges. So, turning it on/off isn't a problem. Also as mentioned previously, if it has a standby circuit, that solves the problem.
enjoy