I leave everything except my TV, class A amps & multi channel amp (it has a trigger) on all the time. They are all on line conditioners. If I leave town, everything gets unplugged except the Battery Power Supply for my Rowland amp. Most modern solid state equipment runs relatively cool, and many engineers/techs say it's better to keep it at a steady temp. I agree, I've never had a component fail from this practice....
Can I leave my Tuner on 24/7?
It's because of logistics that I started leaving it on on the time. It's an inexpensive Onkyo, used for basic background-type listening. You know the deal. Any problems leaving it on? Thanks in advance my audiophool friends....warren