USB Signal Filters

I just took delivery of the iFi iPurifier3 last week and it really does make a difference in the overall “depth” of the soundstage. Having spent 0ver 44 years as a working drummer in both live and recording sessions, I have a keen sense on what sounds good, ok and accurate when it comes to audio playback. I’ve also worked as a live sound mixing engineer and spent over eight years in the US Navy’s advanced electronics program (Polaris Electronics) so I know how things work.
The iFi is connected to my HP desktop PC running WIN10 and it provides access to my Hi-Resolution FLAC music library on a remote 4TB file server. The other end of the iPurifier3 is connected to an iFi Zen DAC which outputs to a set of Hifiman HE-400i Planer Headphones. All things considered, I believe that the clarity of the signal is the biggest contributor to sonic excellence. Sometime we forget that digital signals, being DC in nature, carry a lot of “hash”, cheap cables induce RF noise and some master clock timing pulses tend to drift so re-clocking is very important to eliminate jitter between the sender and the receiver. All told, I think that USB signal purifiers tend to be a worthwhile investment and in the case of the iFi product, its and economical investment.

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