How long does a DAC take to burn in?

Most high end equipment well take between 500-600 hrs to break in, I leave a new piece of equipment running straight thru to 600 hrs 24/7. Usually between 3-400 hrs you will start to hear what the piece will start to sound like but the magic starts at 500 to 600 and up to 1000 hrs for some pieces like Accuphase,Arye and others.

Not all, but some high end equipment fully breaks in within 2 to 8 weeks of you selling it.

^^^
funny

A couple months ago I was curious so I asked the "new" ARC by email - how long does it take to burn in your DAC ? ARC Customer Service responded back "look in the manual". Nothing in the manual about burning in.
Make what you want with their comments.

Prior to this, quite a while ago when I first got the DAC, and was still able to communicate directly with staff at ARC - I was given an hours estimate.

Cheers

Over the years I've had all sorts of pieces of equipment where no break in was specified by the manufacturer.
But my personal experience is that most things DO seem to improve over a few hundred hours of use.  I'm not sure about things like cabling, but certainly electronic components and speakers (IMHO) do tend to improve with age.

My Ayre Codex DAC took about 400-500 hours to breakin.  I'm probably at 800-900 hours now and they sound fantastic at his point. Very happy with the sound.