[Elecraft] K3 Audio: differences between headphones out & line out ?

[Fabio IZ4AFW / NZ1W]

Hi guys,
    I'm using my K3 with a Yamaha CM-500 headset.
My main activity is contesting, mainly on SSB (and some RTTY).
I am used to record my audio with the K3 line out.
Sometimes (when I have some spare time) I listen to the recorded audio.
What I've found is that many times the recorded audio (from line out) 
especially on heavy-QRM situations appears to be "clearer" (I mean more 
comprensible to the ear) than it was from the headphones.
My doubts are about the rx-equalizer.
Are the two audio the same (do they both pass through the same audio 
chain and/or rx equalizer) or are they different somehow?
I specify that my RX equalizer is NOT flat at the moment, but tries to 
eliminate the first two low audio bands and rolls off some dB at 3.2KHz.

Thanks!
Ciao 73
Fabio
  IZ4AFW / IO4W / NZ1W



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