I bought my 1977 Marantz 140 power amp (75wpc) new; about 10 years ago the right channel started cutting out in scratchy fashion about 30 minutes after power-up, mostly noticeable only when listening at low volume, for maybe another 30 minutes or so. For the past year or so I've just left it powered on all the time and the problem has disappeared--it works great now. Duh, I should have thought of that a lot sooner. Only problem is that the 8V fuse-type meter lamps burn out after a few months. I've stopped bothering to replace them.
Solid state power amps.; on or off?
Some people keep telling me that solid state gear should be left powered on all the time during day to day listening. They claim that thermal consistency will improve long term life and reliability. Power cost consideration appart, what is your opinion; experience?