nonoise,
Happy to answer your question.
My coworkers have a variety of viewpoints on audio. Some are what I might characterize as "hard nosed engineer" types and others are audiophiles - and somewhat subjectivist - in their spare time. (E.g. they wouldn’t use a tube amp for their working environment, but enjoy that sound in their home system).
In the pro side, generally speaking, there is little given to the whole audiophile boutique cabling idea. For the most part, "pro grade" cabling is conscripted, along the likes of Canare, Belden etc. (In fact, some studios incorporate their own cable construction...using Canare, Belden as raw material).
When it comes to our off-time, I’ve known sound mixers and fellow sound editors who owned Quads, Apogees, and a variety of other audiophile favorites. Sometimes tube amps, that kind of thing. Usually the cabling may be what they could get from work. But there are also some who have bought some "audiophile grade cables" - though I don’t remember anything "crazy" in terms of really high priced cables in someone’s system who works in the business. (Again, only speaking from those I know).
I’ve worked in and been to various music mixing houses where differing views are to be found - often there is a bit of an attitude that the audiophile market is a bit nuts (in fact, at a work dinner last night, a fellow sound professional was expressing just that sentiment to me). But sometimes there’s a studio where the owner or engineers are more "tweaky." Though, I admit, I can not give you the name of the cables they may have used, if indeed they were beyond the normal pro cables.
So I would say the *general* picture (surely there are exceptions) from those who work in pro sound seems to entail much less worrying about, and desire for, "high end" cabling beyond choosing the right pro cable with the appropriate properties for the job.
My own cables have been all over the map. From those I had made at work. To earlier boutique cables I purchased as a newbie audiophile. To a whole bunch of loaned and borrowed cables from contacts and audiophile friends (e.g. right now I have a pair of Nordost interconnects I’ve borrowed, simply because I need another pair of interconnects for a while).
I hope I’ve answered your question.
