Pretender? Based upon what exactly? I call BS on a BS claim.
You can't reduce 14% of a loaf of bread by removing the diamonds from it- there weren't any there in the first place.
There's certainly a relationship between magnetism and electrical fields, this is obvious and has been applied to cables for a very long time, generally as low-pass filters, that's what the ferrite add-ons do, reducing RFI through added inductance. Most PC monitor cables have them, as do many power cords and other things.
However, unless these are serious low-pass filters on the cables and are creating severe high frequency rolloff, they wouldn't reduce THD, and even if they DID reduce THD at some frequency due to the rolloff, a proper test would account for the rolloff and adjust the generated harmonics accordingly- IOW, a proper methodology wouldn't show an advantage from high inductance due to magnetism.
IMD could potentially be reduced by the same mechanism, but that's only if these are REALLY insanely nonlinear cables, acting as exceedingly high-value inductors, we're talking fractions of a henry, not millihenries, if line level. At speaker level millihenries would be sufficient to cause that level of rolloff, but it would be exceedingly extreme to believe that he's introduced that much inductance, and the extreme rolloff at the high end would be noticed as a severe negative by the vast majority of listeners (and 100% of educated listeners). We're talking several dB at a minimum, a severe and highly noticeable change over a broad frequency range.
Even IF this were the case and they were so dramatically nonlinear (a problem vastly larger than THD and IMD whose audibility is variable and frequently a non-issue), a proper test methodology would have indicated this severe problem. The lack of any language about the testing other than the absurd claims should be a red flag.
Using magnets around audio is not a new idea, it's been tried every which way. The primary way it would apply to cables, is to make them worse, not better, if having an influence in the audio band. One exception is the utilization of a transformer- many reputable transformer manufacturers publish measurements too. Transformers can reduce system noise and achieve some other benefits but do introduce their own distortion and other issues.
So, take your pick- either his cables are badly broken and nonlinear, and the "testing" misleadingly ignores this to give him his claims, or the numbers are made up. There is simply no way for the claims to be true under legitimate testing.
You can't reduce 14% of a loaf of bread by removing the diamonds from it- there weren't any there in the first place.
There's certainly a relationship between magnetism and electrical fields, this is obvious and has been applied to cables for a very long time, generally as low-pass filters, that's what the ferrite add-ons do, reducing RFI through added inductance. Most PC monitor cables have them, as do many power cords and other things.
However, unless these are serious low-pass filters on the cables and are creating severe high frequency rolloff, they wouldn't reduce THD, and even if they DID reduce THD at some frequency due to the rolloff, a proper test would account for the rolloff and adjust the generated harmonics accordingly- IOW, a proper methodology wouldn't show an advantage from high inductance due to magnetism.
IMD could potentially be reduced by the same mechanism, but that's only if these are REALLY insanely nonlinear cables, acting as exceedingly high-value inductors, we're talking fractions of a henry, not millihenries, if line level. At speaker level millihenries would be sufficient to cause that level of rolloff, but it would be exceedingly extreme to believe that he's introduced that much inductance, and the extreme rolloff at the high end would be noticed as a severe negative by the vast majority of listeners (and 100% of educated listeners). We're talking several dB at a minimum, a severe and highly noticeable change over a broad frequency range.
Even IF this were the case and they were so dramatically nonlinear (a problem vastly larger than THD and IMD whose audibility is variable and frequently a non-issue), a proper test methodology would have indicated this severe problem. The lack of any language about the testing other than the absurd claims should be a red flag.
Using magnets around audio is not a new idea, it's been tried every which way. The primary way it would apply to cables, is to make them worse, not better, if having an influence in the audio band. One exception is the utilization of a transformer- many reputable transformer manufacturers publish measurements too. Transformers can reduce system noise and achieve some other benefits but do introduce their own distortion and other issues.
So, take your pick- either his cables are badly broken and nonlinear, and the "testing" misleadingly ignores this to give him his claims, or the numbers are made up. There is simply no way for the claims to be true under legitimate testing.