"Robert" wrote in message
om...
My new Cambridge Audio amp and tuner both carry instructions that the
unit should be run continuously (playing music) for 36 hours "to get
it performing at its best".

Does anyone know what such 'running in' is supoposed to do?

Is it running in, or just warming up?

My last two sets of speakers definitely "ran in" - in different ways; the
Rogers LS4as started off bright and thin, and filled out, whereas my Monitor
Audio Silver 8is started off dull and perked up.

Electronic components also improved over (a much shorter) time, but they
also do the same thing if they're unplugged for a few days. So much so that
I've given up unplugging my amplifiers when I go on holiday, and I used to
leave my old CD-player switched on all the time (the new one had a standby
mode).

Quite why things should take longer to warm up than they do to get
physically warm, I'm not sure. No doubt someone will reply in a minute to
say that good equipment doesn't do that, and it's just a figment of my
imagination!

Andrew