[Elecraft] Elecraft AF1 audio filter

Hi Johnny, You may try seeing what a choke coil in series with the audio to the speaker or headphone does for you. I have the Nescaf filter and really like it for CW. In most cases, its cleaner than the available internal audio filters. But I found that adding a 3mH coil and 15uF cap in series

[Elecraft] Elecraft AF1 audio filter

Hello Elecrafters, Is this filter also useful in SSB in terms of giving more listening comfort?  I like the selectivity of my K3 but still feel the audio of K3 in SSB is fairly harsh.  Hence, I would wonder whether the elecraft AF1 filter will give any comfort to my ears.  I do not know