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Posted to rec.audio.tech
Phil Allison
 
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Default Hum has me stumped


"Serge Auckland"


Sensible advice, but isn't it a pity that consumer electronics rarely
follow professional practice of having a permanent safety ground, and a
separate audio ground which can be bonded to safety ground or lifted.



** Shame how in very case where that is seen it is VERY unsafe !!

Floating the internal circuitry while grounding the external metalwork of AC
powered audio gear is a recipe for a FATAL accident.

Think it trough.

Humans touch the connectors that link to that floating circuitry.




........ Phil