Exposure to continuous heat will reduce the life cycle of electronic components. There is little to no argument most folks turn off their tube gear after each listening session.
This same argument applies to SS devices as well. Resistors and capacitors will deteriorate when exposed heat over time. So after use, it is recommended you turn off your SS amps and pre-amps. There is an argument from some quarters that turning devices on & off reduce the life cycles of electronic devices. However, damage due to heat would be much worse. Modern SS amps/preamps warm up rather quickly as in 20-30 mins. So the wisdom of leaving SS amps/preamps 24/7 is highly questionable.
My two cents.
This same argument applies to SS devices as well. Resistors and capacitors will deteriorate when exposed heat over time. So after use, it is recommended you turn off your SS amps and pre-amps. There is an argument from some quarters that turning devices on & off reduce the life cycles of electronic devices. However, damage due to heat would be much worse. Modern SS amps/preamps warm up rather quickly as in 20-30 mins. So the wisdom of leaving SS amps/preamps 24/7 is highly questionable.
My two cents.