Designer in wall wiring - worth it?

 @erik_squires  While I don’t get on this forum often, I generally respect what you have to say. Your comments here about specialty in-wall cables are disappointing. The Audience Hidden Treasure In-Wall cable has a lot more technology embedded in it than simply being a shielded cable. There is more information about it in the review, should you care to read it, and on the manufacturer’s website.

Even more germane is the suggestion, often echoed on this forum, that you speak truth from personal experience. I encourage you to try it. I have found that the installation of a Romex dedicated line was very worthwhile, and the subsequent installation of the Audience Hidden Treasure greatly improved upon the Romex. With proper installation, the risk of using this cable is far less than driving a car to work.

To address the OP, for a 15' run, or even two 15' runs, the cost of the cable will likely be a very small percentage of the overall cost of your system.

Yes, totally worth it; for the price point = best money I have spent in my audio room. Total cost cheaper than buying power cords. I had a master electrician upgrade my electrical panel, house grounding, and then run two dedicated lines to my room...also new upgraded wall outlets. A noticeable improvement in my system...instantly. I gave the electrician a "go by" to use as reference = one others have posted here on Audiogon. We discussed it in-depth and he followed it perfectly.

Dedicated AC power lines and wall power improvements for audio.
– updated 8/2024 – By Vince Galbo
 

@jmrrobbie1 

This thread is specifically discussing the merits of using in-wall audiophile grade romex. 

Was this installed in your system? 

Yes - 10 gauge,; the run to my room was short.

I really don’t want to wade into the specialty power cable debate, and for the record, I didn’t say in wall cables had no sound, but that power conditioners were a better place to spend your funds.  If you think boutique in-wall NM cable (i.e. Romex style) will change the sound of your music I’d like to know which attribute you think it’s affecting, and doing better than a power conditioner.  Among them: 

• Reducing noise in the audible band
• Reducing noise above the audible band (EMI/RFI)
• Reducing emitted noise
• Controlling AC voltage so it’s constant, and less prone to voltage sag
• Power factor correction or some other resonant circuitry
• Power regeneration

Or did I miss some other attribute or power transmission that is important here?  In every single one of those cases above, except perhaps noise emission we can find some example of a power conditioner has measurable benefits.  Not every conditioner will do all, of course, but the scale of improvement is enormous compared to anything you are allowed to do in the wall of a building.