Burning in a new DAC

I'll be receiving my new DAC soon; the manufacturer suggests a burn-in period that may take up to a month. I have not understood this process well. My question is, does the DAC need to be feeding (in this case a Transcendent Sound pre-amp)a piece of equipment that is actively "outputting" (turned on, driving an amp), or can burn-in be achieved simply by having the DAC turned on with an active *input* (from my HagUSB)? If I don't have to have my tube gear turned on (preamp, amp), and can simply leave my iTunes actively playing music files, outputted to the HagUSB (& therefore the DAC), I will leave my computer (& the HagUSB,& the DAC) running 24/7 to do so to achieve burn-in quicker.
Comments?