I don't have advice, other than what I know because I'm doing just that.
I have a pair of JBL SLR350's (Powered monitors) and I hook them to the RCA outs on the back of the Asgard 2. It's just a pre-amp connection so all it does is pass it through (no amplification). However, it benefits from the Bifrost DAC which i have running into the Asgard 2 via RCA and the volume knob controls the volume on the speakers as well as my headphones (LCD-XC's), but will only run the speakers if the headphones aren't plugged in (it's automatic). I leave the speakers at about 75% because I can hear them if they are up much higher..in fact I think I may drop them down to 50 - 60% as I can actually hear them right now and it's annoying me. I doubt you'll need your speakers to go much louder than that - but I'm not you so I'll let you decide.
Hope that answers your questions! I have no clue if I'm doing it "right" of course, but so far it works for me.
I've been wondering how the Audeze sounds with the Asgard-2 relative to the more spendy usual suspect you see commonly paired with Audeze. Thinking about adding a LCD-2 to my RS1i to round out my sound sigs.
Someone posted something about wanting an RS1i. I paired my Grados with the A-2 for about two years and finally decided to try something with tubes-Little Dot 1+ hybrid. Very inexpensive entry. Never having heard anything other than the A-2 except for a couple of meets, I was perfectly satisfied and still think it's totally fine. But, now I'm hearing differences w/ my RS1i and I do think the brighter tendencies of Grados probably sound better with smoother sounding tubes to soften some of the highs....FWIW....I'll bet the Vali sounds nice w/ Grados as well for a small financial commitment to test the tube waters so to speak.
Edited by markm1 - 8/3/14 at 3:57pm