The 225i is certainly transparent enough to reveal quality improvements "upstream". I could easily justify a dac and amp totaling $800 with that headphone (assuming high quality files properly delivered to the dac). No investment in headphones can "improve" what's being sent by a lesser dac. IMO Bifrost/Asgard/225i would be seriously musical.
Thanks-I'm looking for these kinds of recommendations. Also, I would be have the investments in place for future headphones. I've seen recent positive reviews for the Peach Tree Dac-it.A recent headif review rated it over the Bifrost.:
It would be the same price range as the Bifirst w/ USB. I like the idea of also using a DAC w/ my stereo system to stream music with with a future Sonos system.
Are any of you familiar with the Dac-it?