I have a peculiar problem with my Audeze LCD-2 Closed-back headphones.
This is an old apartment building with partial/poor grounding and there’s crappy old antenna wiring running alongside the mains in the wall, so my living room is somewhat RFI polluted.
It only affects the Audezes, though. I’ve tried all available sources (all single-ended), with a premium double-shielded cable, cleaned all contacts, etc, so there should be no rectification happening in the chain.
There’s very often a faintly but clearly audible interference that seems to be a TV channel’s audio track. Its volume is independent of adjusting the gain, so it doesn’t really impose itself on music but is bugging me at silent passages or when nothing playing.
None of my other headphones (dynamic ones) suffer from any audible interference.
Since this happens with any source and any cable, it leads me to believe that this phenomenon is internal to the headphones. Now, how could this be?
Could a relatively high-impedance (70 ohms) planar diaphragm with near-null mass really react to RFI enough to audibly move air, as in, act as an antenna in itself?
Would I most likely get rid of this problem by getting a balanced headphone amp? (If this nuisance ain’t gone after that I’ll lose my temper, haha)
Obviously this constant talk show in the background makes these expensive headphones pretty much unusable.