[Elecraft] Audio levels in K2

[Bob Tellefsen]

Hi John
This has been an ongoing observation from the beginning of the K2's life.
It seems the audio amp is very sensitive to the headphone impedance and
efficiency.  Some folks have very low audio and others seem to do just
fine.

I get my best results with some old large Radio Shack headphones that
completely cover my ears and have small speakers in them.  I guess the
combo of impedance and efficiency must be a good match for the K2 in
these old cans.

You might haunt your local ham swaps and pick up a few different headsets
for cheap and try them.

Good luck and 73
Bob N6WG