I did not know if this was normal since my Macbook Pro also had the same issue when it was running from the adapter. Having long hairs on my forearm, i do get electric shocks, much like shocks we get from static charges. Its an unpleasant feeling.
In this video above, the test pen lights up when it touches the bare metal casing for both units.
In this next video, a grounding cable was attached and the test pen only litted up when the ground was removed.
Hence i proceed to investigate the grounding for both units.
I realised only the DAC had no grounding. Since it was touching the AMP casing, naturally the AMP also litted up when the test pen touched it.
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| The earth pin is not grounded |
Grounding is added onto the earth pin and connected to the casing.
Thereafter, when tested with the test pen, its all good. No more tingling sensation.
I do not know if leaky earth does affect the performance of listening, but at least it improved the handling by a great deal. No more shocks!
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