Originally Posted by Frank
Originally Posted by tommypeters
[quote=markg]Scenario 1: The headphone amp also had plugged into another one of its input, the analogue outputs from my Digital TV set top box (e.g. like a Sky HD / cable box).
Try this scenario again, but unplug your antenna cable from the set top box.
+1 [/quote]

+1

If this is the cause you can add a balun (to isolate the antenna's ground).

Note: your TV Coax is essentially an antenna in this case.

Explaination http://www.epanorama.net/documents/groundloop/antenna_isolator_building.html

You can buy them for a couple dollars

- Fiddler (IMHO)

If you think listening to music is fun, try learning an instrument.
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