Should a CDP be left on 24/7 or shut off & on?

If it doesn't have tubes in the output, leave it on all the time.

No harm in leaving it on. Having said that...if the player has a standby mode you can probably use that. Most better players with standby are designed to leave that part of the player on that has the long warmup parts; and they shut off things like the display and the transport which don't matter to save power.

My CDP specifically says this in the manual.

Check the manual or the manufacturer if you like. Cheap players also have standby, but they really only leave enough on so the remote can turn it back on.

Seeing that the answer may depend on the model of my CDP, last night I sent the question to Rega themselves & received a response:

Question: Is there any benefit to leaving my Rega Planet powered on all time or can I shut it off when I am not using it?

Answer: The Planet will not come to any harm if left on permanently, however in these environmentally aware times I would always recommend turning the player on 10 minutes before use. This will allow it to warm up to optimum temperature, save electricity and prolong the life of the CD player.

regards,

Simon Webster
Customer Service Coordinator
service@rega.co.uk
Rega Research Ltd.

it's on 24/7....when i mean on ,playing 24/7 .Not on stand-by.

I think you have already answered your quesiton. If you heard no difference in sound with it off, then there is no reason to leave it on. Trust your ears.