I am still breaking in my X-Feed I just got. (Cheers, Mike. thank you.)
My initial impressions:
I am in bad need of better IC's. especially with the X-Feed adding another pair to the signal path.
-Subjectively speaking, the X-Feed adds almost zero coloration to the sound. I am rapidly becoming a neutral sound freak. Details deetails deeetails.
-Testing on a Headroom Little More Power (with filter and crossfeed off, or course.) the sound becomes more directly centered between the ears. Very well blended with no discernable major gaps.
-Headroom's Crossfeed centers and brings the sound a bit more foward, almost like the sound is centered a bit more towards your nose. It's kind of weird, almost like having the sound feel, kinda nasal. Some may prefer it, but I'm liking the X-Feed's more neutral approach better.
-Compared to Headroom's Crossfeed. It adds too much midrange, making it a bit muddy, there is a filter to add in more treble, but it makes it sound kinda "sparkly". The Little is pretty warm sounding as it is to begin with.
-I did find a song that "overshot" the crossfeed from left to right. It was weird. It was like the voice was coming more from the left and then kinda jumped suddenly to the right and vice versa. I will test again with another amp and DAC after full burn in.
So after full burn in. Testing will be done with a Grace 901, Muse 2 DAC, and Zu HD600.
I tried the X-Feed with my K1000's by accident (left it in when I switched from using HD600's). It sure did sound weird. Sounds were overshooting from left to right and vice versa.
I am definitely going to be interested in a switcheable X-Feed later.
-Ed