Marcossy,
Heimdalls surely have nordost "house" sound, but are different. Whats was most impressing I mentioned above: midrange bloom, 3D full bodied, rounded sound, very vell everything separated in the soundstage. Highs are enough detailed and at the same time sweet and not aggressive - you can listen more "agressive" CDs you have not listened before - this balance just hooked me up completely.
Freys. I think I have about 100 hours on Frey IC and the good thing they are burned-in enough not to think too much about heimdalls (straight from the box they were awful.. heimdalls were awful as well, but since they were dealer demos settle-in, or burn-in time was short - next evening they sounded good - infact after the first few songs with heimdalls (and awfully harsh and dried-up sound) I jumped to double-check if these really were Heimdalll not Baldurs). Frey are very fine cables, and hour after hour they show more and more of their character. Less bloom compared to heimdalls, but more crisp details, which are still very rich in tone and thats amazing thing. Now rarely but sometimes those details appears bright, but if this dissapears with additional hours of burn in, I really going to love freys even more. 3D soundstage, instrument separation is another huge step forward. I would add - more focus - compared to heimdalls.
Heres some facts:
Burn-in takes (this is so physics-stupid, but so audiophile-true) a loooong time, better buy burn in service at local dealer, or burn in at home using lets say FM tuner. I am using tube amp with some rare and NOS tubes, so just can not afford leaving amp on with radio playing all day long...
I use 1 m length interconnects. Different lenghts WILL sound different.
The sound is synergy of all components + speaker placement and room acoustics.
If you demo Freys against Heimdalls in your system please come back and write down your experience.
mjordanas