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 _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com

