[Elecraft] K3S audio board for K3 upgrade?

[Walter Underwood]

> On Mar 21, 2016, at 9:21 AM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
>  … both Yamaha CM500 and Sony MDR7506. The Sony headphones are widely used in recording studios, and the sound of the CM500 is pretty close in sound quality.

The CM500 is fine for communication use, but maybe not for music. When my Grado SR60 headphones died after fifteen years, I tried using the CM500’s for a while. That didn’t work. I stopped listening until I got a new pair of Grado headphones. I upgraded to the SR225e.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)