[Elecraft] K3 Harmonic Distortion

[Lyle Johnson]

There are three distinct stereo audio channels in the K3, and they all 
have slightly different characteristics.

LINE OUT

This has its own digital-to-analog converter (DAC) and is transformer 
isolated.

PHONES

This shares a DAC with the speaker channel, but has its own amplifier 
and isolating resistors to help reduce the impact of plugging in two 
sets of headphones.

SPEAKER

This shares a DAC with the headphones, but has its own stereo amplifier.

We are aware of the discussions regarding harmonic distortion in these 
audio paths. While it is easy to just say, "The radio meets specs!" (and 
it does :-) we are looking at ways to improve the performance of the 
entire audio system.

73,

Lyle KK7P