2. misc-audio
  3. 189218-166451

Any one measured the EMI/RFI attenuation performance of audiophile power conditioners?

Hello,

I was looking for a very good/robust power conditioner which will clean up reliably very noisy/dirty power supply that I have in my aprtment. While looking for one I went through catlogs of AudioQuest, Shunyata Research, Synergestic Research etc. but no one published charts showing attenuation performance over frequency range like you get for EMI filters from Schurter or Schaffner etc. which are in the industry for EMI/EMC compliance.

Since audio is very subjective, but contrary to audio reproduction Power and EMI/RFI reduction is completely objective and can be clearly demonstrated via attenuation charts.

Hence I am asking if anyone has measured the actual performance of these audiophile power conditioners. I am not denying someone saying they hear improvement after using XYZ product, but since I am talking about power conditioning or EMI reduction it's as objective as it can be.

I am not at all surprised to see all the manufacturers not publishing the performance data, else it would be used in other industries and research fields where it's far more critical and have far more stringent requirements on the performance of conditioner/EMI filters. But I am shocked to see even products ranging above 5-10K are following the same practice of not publishing the results.

Please note I am not a measurement fanatic, but I know where I can chase the measurements and where I can rely on my hearing to gauge the difference.

Regards,

Audio_phool

audio_phool

Showing 1 response by tvad

tvad
11,620 posts
 

If you can find a way to correlate sound quality to specifications- especially EMI reduction specs, more power to you.

This is an important point. 
 

I may be the only one in these threads to have owned an OnFilter EMI filter, and it absolutely worked as Vladimir said it would. However, after using it with and without several highly regarded power conditioners (which I thought all produced worthwhile improvements), I could not discern any audible effect brought by the OnFilter. My conclusion was chasing low EMI regarding high end audio was not worth my time or resources. 

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