The thing about instrument cable is capacitance.
Most instrument cable is made Oxygen Free Copper (OFC) these days, which helps ensure little is lost in conductance, but capacitance can roll of the treble your amp gets from your instrument.
Capacitance in cable is per metre, so the longer the cable run, the more capacitance, and the more treble gets rolled off. This cable has the lowest capacitance of all by quite a margin, at 52pF per metre.
It's not unusual for other instrument cable to have twice or even three times that figure, so it's easy to see this cable is a clear winner.
In practice, it's clear and musical, open and airy, and whether using short or long cable runs, sounds the same. It really is the best of the best, and is extremely hard to source.
The fact that Thomann sell it by the metre at an excellent price is great news, and represents a serious bargain.
Highly recommended.