Albarry's

I do believe that the M608's sounds considerably better after 24 hours; it seems pretty clear to me that there is more body to the sound. But I don't know if that difference happened in 5 hours, 12 hours, or the full 24. I'm not doing any rigorous tests and I'm not likely to in the future, but I am sure that 24 hours is better than 1 hour warm up. The question remains as to whether I negate that advantage by switching the amps off to change pre-amps. Obviously I am not going to be able to tell by ear, since I've got the big difference the change of pre-amps makes to take in to account.

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Originally Posted by trio leo

I'm not saying they NEED 24hrs to fully charge up, as HiFi Dave said they sound fine after an hour or so as probably a lot of amps do, I'm not being drawn into an argument about capacitors, I don't know the first thing about electronics, as I stated before it is how Neil explained it to me.
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I'm not looking for an argument at all, my comment on capacitor lifetime wasn't a criticism, just a statement of what happens to capacitors. Look at how many Naim's get recapped.

20 years is indeed a very good lifetime. 10 to 15 is typical for most equipment.