High quality in-wall UL-C2 rated 10-gauge A/C wiring ?

I am looking to re-wire my listening area front-wall with a dedicated A/C circuit using 10-gauge UL-C2 rated in-wall wiring. I know Audience makes a high-quality one however I didn’t want to pay $26/foot.

https://www.tweekgeek.com/audience-in-wall-wiring/

If you are wiring a dedicated circuit for your audio sytem, THIS is the wire to use. Audience In-Wall wire is UL rated for in wall use, and is simply the purist, best sounding wire you could use to power your audio system. Robert Harley, and the Head Geek both use it in our listening rooms.

You have 3, 10 AWG high purity stranded copper conductors for the hot, neutral and ground legs. There is an additional drain wire for the shield, and the outer metal jacket offers additional protection from screws, nails, and RFI. Not only does this wiring sound good, it’s safe. The cable is also cryogenically treated to further reduce self-noise by decreasing the physical boundaries between the crystalline structure of the copper.

Features of Hidden Treasure include:

• UL CL2 approved for 120v and 220v AC in wall applications
• 10 AWG, 3 conductors
• Stranded 99.9999% pure OFC, cryogenically treated copper conductors
• XLPE dielectric with PVC sleeve
• Foil shielded
• Flexible
• 18mm OD

UL listed yes...... For what type of application? ..... UL listed for use as branch circuit power wiring?

CL2: This is a cable jacket fire resistance rating defined in Article 725 of the National Electric Code. It stands for "Class 2 Remote-Control, Signaling, and Power-Limited Circuits" cable, which indicates that the cable is suitable for in-wall installation and use for certain low-voltage applications. Examples of Class 2 circuits include burglar alarm cabling, intercom wiring, and speaker wire. The jacket is designed to protect against voltage surges of up to 150 volts.

https://www.cablewholesale.com/support/technical_articles/confusing_cable_terms.php


Before you buy any so called hi-end in wall branch circuit power wiring/cabling check with your State, County, or local city government AHJ (Authority Having Jurisdiction) that applies to your area. Make sure it meets electrical Code for your area.



https://www.ecmweb.com/cee-news-archive/classification-circuits-under-article-725

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@jea48 point is well taken. In Southern CA I had no issues having the jacketed JPS cable put in directly in wall but in Portland where (probably in retrospect in error) I had conduit installed my electrician needed to strip the SR Romex into its three constituent cables and run them separately inside the conduit. Suffice it to say consult your local code knowledgable sparky before you set off.

Romex style with two parallel conductors and the earth between them is only bested by twisted LNE in aluminum and twisted LN.

The worst is random wire in steel conduit.

see https://centralindianaaes.files.wordpress.com/2012/09/indy-aes-2012-seminar-w-notes-v1-0.pdf p31ff.

https://web.mit.edu/jhawk/tmp/p/EST016_Ground_Loops_handout.pdf

A question for the fancy-pants fans: Electricity comes hundreds of miles, through umpteen transformers, 'suspect' cable & connectors to power meter, panel, breaker, & jack and a few feet of fancy wire is going to 'fix' it?

Not sure if my experience will help, but I recently moved to a new house and had a dedicated AC supply wired with this cable -

https://mcru.co.uk/product/mcru-10mm-shielded-mains-spur-cable/?v=69e1aafeccc5
In my previous place, I also had a dedicated supply but wired with normal romex.  Well, my system (no change before move & now) now sounds quieter with less background hash & noise, the midrange is richer and the top end resolution is better but sounds less sharp.  I need to clarify that the room is obviously different with much higher ceilings (16ft. now vs. 9ft before) but leaving that aside, there is no doubt that the sound now is much much better.Hope this helps.