I've done a little critical listening to my new (to me) HP-1's (no mods), and doing comparisons to the only other headphone I currently have, Audio-Technica ATH-M50.
Rig is FLAC -> Foobar2k -> Schiit Gungnir -> Asgard II
The most dramatic thing I've noticed so far is the contrast between the ATH-M50's and the HP-1 on bass-centric music. Kodo's O'Daiko piece is quite the muddy mess on the ATH-M50. The HP-1 bring out the subtle timber and presents enough overall separation that one can discern that "hey, these are Taiko drums!" The M50's? Just a muddy mess.... :(
Even given that, it seems like the yammies could do a bit better. I'm considering an upgrade to Mjolnir. Anyone have experience with Asgard II Vs Mjolnir with high impedence orthos?
Sorry for the newb questions.... Appreciate the help!
Careful. Mjolnir is strictly balanced only. You'd need to have the YH-1s recabled for that.