What Is an Audio Power Filter for?

Transformer

Are external power filters useful in any way? Why are high quality EMI (el. mag. interference) filters not a part of most consumer electronics devices? Should we care about high frequency interference, considering we cannot hear it or see it?Continue reading

EMC

Anechoic chamber for EMC testing—Nemko, Norway

What is “electromagnetic compatibility”? Does it serve any purpose nowadays, or is it an anachronism? Why most consumer electronics cannot withstand a lightning strikeContinue reading

The Skin Effect Exists

Tesla coil sparks

Is the term “skin effect” often arising in the audiophile world only a “voodoo fallacy”, or does this phenomenon, as described by J. C. Maxwell in 1892, really influence music reproduction?Continue reading