Here is a comparison I did w/the Illuminations D60 and the Bolder digital IC a while back:
I have a new Bolder Cable digital interconnect using the bullet plugs (replacing one that previously had Canare termination). I am comparing it to an Illuminations D-60. When I first got the D60 I did some A-B comparisons with the cardas teminated BC Digital cable. The D60 was better. Not a lot better, but still better. The Canare terminated Bolder Digital cable was just a tad sloppy sounding in comparison (slight, but noticable - the D60 has a very "fast" sound). Fast forward 2 weeks, and I felt I have enough time on the new bullet plugged Bolder Cables Digital Interconnect to do a fair comparison w/the D60. Well, to keep this short and sweet, the BCBPDI (Bolder Cable Bullet Plugged Digital Interconnect) is staying in the system, and the D60 is going adios!
I won't go in to a long drawn out comparison, just hit a few highlights - the BCBPDI is just more natural sounding. More relaxed, warmer, weightier, and with a similar level of overall detail compared to the D60. Soundstage is natural, and invites you in, rather than jump out at you. By comparison, the D60 has a more "hi-fi", slightly artificial sound. Bass is tight, but a bit too tight, it doesn't resonate and weigh in quite as well. Midrange is ever so slightly thin sounding. Soundstage is a bit more "in your face". Strings are not as creamy sounding.
Notice I use the word "slightly" a lot in the above synopsis. Believe me, the D60 is an excellent digital interconnect, but the BCBPDI is just a step closer to what I think real music sounds like.
BTW, BCBPDI is just a shorthand notation, not the actual name of the cable. Anyway, I'm enjoying it quite a bit, and thought I would share. . .