Hi Dover,
thanks for your advice. I am not shure if can agree.
There is a lot of discussion between better to use short or long interconnect cables.
Never thought that 6-7 Meter interconnect is a problem if output / input impedance between preamp / power amp is considered.
I always prefer to have my analog setup on the long wall and only the mono amps between my speakers. My last system had also a 6 Meter (XLR) MIT Cables with excellent results.
Output-impedance of my ARC Anniv. primp is 600 ohms balanced and input-impedance of my VTL amp is 137k ohms so I do not see a problem.
"As a general rule of thumb, you're safe if the preamp's highest output impedance spec is 1/10 of the amp's input impedance (or the amp's input impedance is 10x the preamp's highest output impedance)"
Valhallas values seems also not critical to me: inductance 508,0 nH/m / resistance 12,8 mOhm / capacity 27 pF/m
What I will do soon is to reterminate my 7 Meter Valhalla to XLR because my ARC preamp seems sounds better on balanced outputs.
But I have to concede that for the last 15 yrs. I did not try short interconnects.
Alex