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Grounding – Class 1 and Class 2

Accessories
General
Groundhog+
There are certain safety requirements for electrical appliances (including audio) that force either an earthed device (Class 1 equipment) or one with double/reinforced isolation (Class 2 equipment). More here: https://en.wikipedia.org/wiki/Appliance_classes…
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Grounding – Class 2 and Class 3 devices

Accessories
General
Groundhog+
Until a few years ago much Hi-Fi, AV and computer equipment used Class 2 electrical safety, which included an earth. As a result, often systems had multiple earths, leading to…
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How to test for missing/multiple earth/ground?

Accessories
Operation
Groundhog+
Here is a short quick guide: If adding GroundHog+ kills noise – missing earth/ground. If adding GroundHog+ does nothing (to noise) – problem elsewhere. If adding GroundHog+ makes more hum,…
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Why is a earth/ground required?

Accessories
General
Groundhog+
Earth/ground is needed to make shielding against all sorts of noises effective, even if the system doesn’t have noises without an earth/ground present it’s still recommended. For all mains electrical…
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