Should Class A Amps be left on??

I am an Aleph user and the class A operation on the 5 uses 300 watts, that's a lot of heat/electricity, when turned on regardless of whether there is program material.

The Aleph 5 seems to take 1 hour to warm up and become most musical and fluid, so I turn it on when I plan to listen and turn it off when not in use for longer than 6 hours. The heating and cooling cycles are no different than leaving it on continuously 24/7 I assume and quite likely better than frying forever.

As the Pass website says the aleph series like like the sun will burn brightly and when it is finished it is all over!

Enjoy...

Well, I have tried leaving my Aleph 5 on for extended periods after all of this discussion and I must add that...

It is incredible how removed the amp becomes and music forward after one, two and even three days of power on. I am now sold on not turning off the amp overnight and only turning off for longer than 36 hour periods.

Other than the power bill the only downside I have come to experience is the desire for more dynamics that micro fade after extended power up periods.

In a word how does the Class A Aleph 5 perform after extended periods of power up, Incredible!

Sean, the 5 is in a basement on concrete, underpad & carpet and marble slab with nothing surrounding it for 4'. Airflow, cool air is as good as it gets. The listening room is 70F or cooler.
I am confident that the convection factor is as good as I can make it.