I first tried it out with the Focal Elears, only have an AQ Dragonfly Red to compare. Less fatiguing to listen to than the dragonfly, and the headphone out seems to coax a lot of bass out of the Elears - overall very enjoyable, though I don't really use dynamic headphones for critical listening anymore. I think the headphone out combined with the size makes it a good alternative to the Yggdrasil based on the features. I'll definitely use the headphone out more though, electrostatics and summer weather don't get along.
I haven't messed with the crossfeed too much, but I can say it works. Overall I'm not the biggest fan of the selectable filters and crossfeed, makes me feel like they were trying to please too many people at once.
I left it running for like 8h (accidentally), the case got to around 110 F but it was still chugging along fine. Probably a fair bit hotter inside. Maybe worth noting that the 1541's enclosure is vented, while the Yggdrasil seems to be sealed as far as I can tell.
Just set it up with the T2 > 007 mkii chain, feeding it with a Wavelink HS so I can try out some of my Hi-Res PCM stuff. This is the same setup I use for the Yggdrasil, no direct USB connection.
I'll hold off on more detailed impressions, but in comparison to the Yggdrasil the soundstage is a lot smaller - definitely don't get that same impression of spacing & air between voices/instruments/etc. In general vocals seem to be up close and personal, that's the first thing that caught my attention while listening on the electrostatic setup. The treble is also a bit harsher on the 1541, which you can tune a bit with the filter selections. There's also a bit more bass impact. Maybe it's from the differences in filtering? Or maybe I just bought into Schiit's filter marketing pitch haha. Overall it seems like the 1541 is a bit livelier and intimate in its presentation, but more fatiguing to listen to. Of course things like fatigue have to be assessed over a longer listening period, so grain of salt etc.
To-do (vs. Yggdrasil)
Compare USB inputs
Hook up a Legato II, compare redbook performance
Get a picture for size comparison, it's pretty amusing
Find a balanced input selector - any suggestions?