Debate: Class D amps need 48 hours of warmup

@easystreamer Perfectly reasoned and stated!

MyLAIV Harmony GaNM sounds 100% after 5 minutes however I believe there are other components being used that also need some warm up time such as a tube preamp etc.

So I really should have asked how many people have actually tried this?  If you leave them on all the time, have you powered them off ?  If you don't, have you tried leaving them on for a couple of days? 

@erik_squires +1  "lets’ not attack the replies, or even the author, until we’ve seen informed replies.  This kind of judgementalism is really not what I was looking for when I posted."

My tube pre-amp has a one-minute soft-start.  My Class D does not.

Hard to definitively answer... Both sound fine as soon as they are 'on'.  Both sound a little better after a few hours of use, which is usually at night, which is confounding...

I do not leave my four Pass Labs amps on all the time due to the high bias they are always in class A.  Although I expect the input stage is still idling and the heat sinks are cold.

When turned on the heat sinks start "tinking" and when they are done with that I'm good to go.  But it does get better after that warmup and continues to get better. I believe its my ears/brain just settling in to the groove.

As an aside, although subjectively they sound better I have put sensitive thermometers on the heat sinks and after no more tinking the temperature remains stable at ~109 degrees.

Regards,

barts