Queston On Burning In A New Preamp

No as long as you are playing through it with preamp on it is feeding signal 

that is for sure !

How will you know if the burn in made a difference if you aren't istening to it?

@stevehardy1 

I’m toying with getting the PMG preamp myself and will be very interested in hearing your thoughts. 
 

And as far as burn in,  most of the components only need a few minutes, but capacitors take longer, with the electrolytic cans taking the longest. I used to travel a lot and I’d unplug my equipment while I was gone. If I was gone more than a couple weeks, I could hear the difference in the sound when I came home. I’m retired now and I try to listen to at least one album a day so I leave all my equipment either on or on standby.

Next to the interconnects and speaker cables, this is a topic with wast opinions and debate.  Given that, and my many years of going through hundreds of components and systems, I generally take the folks who have all in or all out opinions with a grain of salt.  Last year I did a seven dac shootout, and I followed the same pro ess.  I hook up the new component, let it run for 1 hour and then I take the same reference songs and listen to it for an hour and take copious notes regarding fairly standard audiophile parameters.  I quit listening for 50 hours and then listen again, and take notes about those same parameters.  I rinse an repeat at 100 hours and then again at 200 hours.  I have four systems, with each system have both a tube path and a solid state path.  The large system shares a pair of Estelon X Diamond Mk 2's and the small system uses Joseph Audio bookshelf speakers.  This took several months.  A lot of work, and money, but Iearned a lot about many things.  All systems changed after the break-in period.  Some changed more than others.  I am an Electrical Engineer, so  I am pretty disciplined and detailed oriented:-)  I have done this with many other components besides dacs.  I think, next to dacs, power amps change the most.

Next to the interconnects and speaker cables, this is a topic with wast opinions and debate.  Given that, and my many years of going through hundreds of components and systems, I generally take the folks who have all in or all out opinions with a grain of salt.  Last year I did a seven dac shootout, and I followed the same pro ess.  I hook up the new component, let it run for 1 hour and then I take the same reference songs and listen to it for an hour and take copious notes regarding fairly standard audiophile parameters.  I quit listening for 50 hours and then listen again, and take notes about those same parameters.  I rinse an repeat at 100 hours and then again at 200 hours.  I have four systems, with each system have both a tube path and a solid state path.  The large system shares a pair of Estelon X Diamond Mk 2's and the small system uses Joseph Audio bookshelf speakers.  This took several months.  A lot of work, and money, but Iearned a lot about many things.  All systems changed after the break-in period.  Some changed more than others.  I am an Electrical Engineer, so  I am pretty disciplined and detailed oriented:-)  I have done this with many other components besides dacs.  I think, next to dacs, power amps change the most.