which output from SONOS to outboard DAC?

In my experience, coax.

neither are stupendous on the stock unit, but most feel the coax is best. I felt the Toslink gave a bit mellower tone if you are into that while the coax was a little more detailed.

If you have a few bucks to spend, consider one of the modifications available for it that will put it on par with better CD transports (Cullen Circuits, Emperical Audio Pace Car, etc). I did a Cullen mod on mine and have never had cause to fire up my CD player again.

Thanks all for your responses. Always appreciate your thoughtful advice, Shazam!

Actually this is a stop-gap measure until I get my PerfectWave DAC and then, the Bridge/Lens that will make it a music server.

I did the modded ZP-80 to several outboard DAC's with the hope that it would compete with my CDP. It did not.

My PWT/PWD are broken in now and I am extremely pleased with their performance.

I too am very anxiously waiting for The Bridge. Assuming that ripped music will sound as good as my cd's do, I will be one happy camper.

...definately worth the wait.

I'm using the PWD with my moded sonos as a stop gap as well. Not as good as using the PWT or a high end CD player, but almost as good and way more convenient. I'm hoping PS Audio takes a page out of the Sonos playbook and builds a good iPhone/iTouch app to use with the bridge. Especially if the rumors of the tablet iTouch are to be believed (think iTouch with a 12 inch screen).