Perhaps, if your power is very dirty, then you might be best to not use it. There is a current discussion on LiFePO4 batteries and pure sine wave inverters limping along on the Audiogon Forum. Be warned, there is little forum interest in this topic and few with any experience. I’m currently putting a system together based upon the rave review of my main go to guy on all two channel considerations. Regarding conditioners, I use and can high recommend the Shunyata Everest 8000. That said, getting off the grid has real appeal.
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
Showing 3 responses by vonhelmholtz
Give Shunyata a call and speak with Richard Rodgers. He is a valuable resource and can answer your technical questions. Juan at @blisshifi can answer your questions regarding Synergistic Research power products and can most likely provide you with a contact at Synergistic Research. |
I’m not well versed in power line noise and the resulting issues with a systems sound quality, but I thought that noise at 1Mhz was preferred to noise within the auditory frequencies and that such noise could be easily filtered. Power conditioners and systems of conditioning like with Shunyata, or Audioquest claim to also limit noise generated by component such as switching power supplies. So, I’m not clear on why filtering of 1 MHz signals is a key point of your post. Audio consumers have complained for decades that power conditioner manufacturers don’t publish object measure of their products direct impact upon what we hear through our electronics. Has anyone quantified what attributes must be measured and how they are measured? I purchased the Everest and associated power cables on a ninety day trial and didn’t return it because it was the single greatest improvement that I had heard in my system to that point. I recognize that this is subjective, but what group of measurements can be used to predict the listener’s subjective experience? |