I wish Heil would put the headphone impedances on his website. He must supply a wide variance in headphone impedances with his boom headsets, maybe amongst the same models. -- View this message in context: http://elecraft.365791.n2.nabble.com/Low-headphone-audio-level-tp5223384p5223825.html Sent from the [K3] mailing list archive at Nabble.com.