Burn in of new DAC

First of all, I would like to thank you all for your audiophile education. I've learned a great deal, Thanks for all the posts.

     I know there has been a post recently on Burn in of equipment, I just couldn't find it. Looking to buy a new Dac, Going to try an R2R this time. Currently own a Benchmark Dac3 b. Really enjoy it and will move it to another system. Looking at the  Holo audio Spring 3 (KTE), Audio GD R7 mk 2 and Denafrips Pontus 2.

I understand the need for burn in, just not sure how to do it, other than turning my amp, preamp and Dac on and maybe downloading I heart radio and letting it play for hours, plus my regular listening. Just hate to leave all those things on. (all solid state) I was just hoping to leave the new unit on, in standby mode to accomplish the burn in, but, if I remember from  the forum, was told that a load would have to go through??? Thanks Any suggestions would be appreciated. Thanks again for the education. Robert TN