Marnok.com wrote:

These are Pro-Luxe IR-650ST.

They were pretty cheap, and they make me look a bit like a cyberman

I tried shutting the curtains, turning the lights out and switching my
monitor off in case any of that was an IR source, none of it seemed to make
any difference.


You need to pipe cold liquid nitrogen into the IR receiver modules to
reduce the noise floor. Looking like a cyberman does help ;-)

Better headphones using digital encoding over radio seem to be the
answer. As it is a PC as source, why not try some Bluetooth ones?

--
Adrian C