Well I got my cable today!
First the shock: The mailman shoved the package in the mailbox with all his might, tearing the package in the process... You have to understand that I live in Canada and that at this time of the year the temperature is in the -30C and that we usually have our mailbox outside the house (a hole in the door wouldn't be convenient at these temperature...). Also when the temperature drop below the point were you better not keep your eyes open for too long because they freeze (don't laugh its true), everything is kind of rigid and usually not very encline to be shoved in a small apperture...
At first glance the cable was undammaged... ouf! A nice beefy (but flexible) cable very well constructed, something better than I was expecting from the picture on Jan web site.
The fit with the Senns is very tight, to the point that I wasn't sure if the connection was made all the way trough. I went to check if the connection was OK by hooking the gear to my system and then it hit me: WOW! I wasn't going to do a serious listening, just checking the connection. In the first 5 seconds I heard the improvement (I had the stock cable previously). The cable is not yet broken-in, well it's not even at room temperature
That can't be placebo effect, I wasn't expecting anything yet! The difference is evident but not far from the original sound. The sound characteristic of the Senns is still the same but more involving more forward. Sadly I can't compare with the other aftermarket cables, I never had the chance to hear them.
I will post more comments after proper burn-in, but in my opinion you can't go wrong at this price.
Meier Corda HA-2
Modified Senn HD600 (foam removed)
Locally made high quality copper / bullet plug interconnect
OEHLBACH/Meier headphone cable