"System Wide" is unambiguous and includes loudspeakers. They're all just handwaving claims, meaningless and absurd. "3rd party" is a copout, and doesn't stand in any industry. Whose data, whose test did you use? Are they legit or someone you paid to produce false data to substantiate your claims? Laboratories LOVE to have their name referenced when they performed testing, it's free advertising. The only reason it's not mentioned is because it's a sham. Proper test results are a great marketing tool, and if they could do what they claimed, they would be used by military, nasa, everyone and their brother.
It's impossible to reduce "System wide" THD and IMD by 14% in the cables, since the cables are not meaningful contributors of these types of distortion. Cables cannot positively influence the operating behavior of properly working gear in THD and IMD. SNR improvement of 1.5dB is within typical measurement variance- someone's cell phone being in their pocket can make that difference, or broadcast schedules, or freeway traffic, or or or...... but I don't take issue with that 1.5dB claim, which is entirely possible.
Take a look at Stereophile. They measure amplifiers, preamplifiers, speakers, DACs, but not cables- why? Because cables don't show up on measurements in a meaningful way, unless they're broken (and "not nice enough" doesn't qualify as broken). Note that this is within audio cables specifically- when you get into true high power and/or high frequency design, every little thing gets more complex including cables, but we're talking about the audio band here.
Every person disagreeing with me has one simple task to "win". Show meaningful distortion measurements from an audio cable (not claimed nonsense measurements by some unnamed 3rd party, proper measurements with methodology, etc). Any audio cable. If it were a big enough issue to reduce system distortion by 14%, you'd better believe it would have published measurements- just like every other type of gear around. Such testing doesn't exist, because cables don't add meaningful THD, IMD, or most other measureable distortions. Noise is definitely one area where they can contribute but 1.5dB is NOTHING.
While I'm not an audioholics fan, this testing does indicate that there are not significant THD components derived from the cables themselves, which would be a prerequisite for achieving the claimed improvements. These are at levels well below a typical system's noise and distortion floor, even with loudspeakers excluded.
http://www.audioholics.com/audio-video-cables/cable-distortion-and-dielectric-biasing-debunked
Use 'em, enjoy 'em, I don't really care- there are legitimate mechanisms by which cables can introduce their own sound into a system. THD and IMD claims of this magnitude are outright lies.
