Post B6bF0T87eHka0Ushbk by jernej__s@infosec.exchange
 (DIR) More posts by jernej__s@infosec.exchange
 (DIR) Post #B6bF0RUNkYMquxHS1g by niconiconi@mk.absturztau.be
       2026-05-23T16:44:06.663Z
       
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       Hi-Fi audio be like: For a $1000 amplifier targeting a community that hates interference more than evil spirits, one would expect that the amp uses RF design rules at 20 kHz, so it works at its rated performance absolutely anywhere even with injected RF: controlled PSRR to 1 GHz with multi-stage ferrites, controlled sub-ohm PDN impedance to 100 MHz, full shielding, perhaps 100 dB analog-digital isolation. But no, we still see some DACs with noise floors that are objectively affected by USB cables because of source impedance variations. What's the solution, learn what a VNA is in your next designs? No, just buy more power conditioners and gold-plated outlets!
       
 (DIR) Post #B6bF0T87eHka0Ushbk by jernej__s@infosec.exchange
       2026-05-23T18:32:26Z
       
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       @niconiconi Don't forget £21k power cords.
       
 (DIR) Post #B6bF0TqmyDTmF1mNEG by niconiconi@mk.absturztau.be
       2026-05-23T18:39:29.956Z
       
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       @jernej__s@infosec.exchange or Japanese Hi-Fi fans who install personal step-down transformers to the grid. “Electricity is like blood. If it is tainted, the whole body will get sick,” says Mr. Morita. “No matter how expensive the audio equipment is, it will be no good if the blood is bad.”
       
 (DIR) Post #B6bF0UjjfvQozRUFsG by ignaloidas@not.acu.lt
       2026-05-23T20:37:59.761Z
       
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       @niconiconi@mk.absturztau.be @jernej__s@infosec.exchange the grid is probably more "dirty" than whatever a true-sine UPS would output lol