In article , Trevor Wilson
wrote:

"StaffBull" wrote in message
...
Thanks for the helpful comments below - another question I have is if
I would leave a valve amp on all the time or switch it off and have to
wait for it to warm up every time I need it?

**ALL power amps should be switched off, until they are required for
use. There are several reasons for this: * Leaving an amp switched on,
accelerates wear and tear on several parts. In SS amps, this means
electrolytic caps.

I would quibble a bit with this. :-)

IIUC Electrolytic caps also deteriorate if *not* used for prolonged
periods. Provided they are used well within their ratings, being charged up
means they should have a 'self healing' tendency for minor electronic
leakages. Hence, left unused they may show a fall in capacity and rise in
leakage current. This should recover with use, though.

Above said, the 'goop' that is inside them does deteriorate with age, use,
and temperature. Hence using them does wear them out. Should be quite a
slow process if they are well built and cautiously rated, though.

FWIW I just turn on the amps before use, and turn them off afterwards. Mind
you, I am happy with SS amps, and don't normally notice any signs of
'warming up' over a long period. With a valve amp, I'd probably be inclined
to switch them on 10 mins before use, and off after use. Dislike leaving
things like this powered up unattended due to the risk of failures. Small
risk probability, but the 'cost' of a house fire can be quite large! Prefer
peace of mind.

Slainte,

Jim

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