[Elecraft] CM500 headset on K3S and KX3?

[Jim Brown]

On 5/6/2020 9:53 AM, Walter Underwood wrote:
> Comments on my blog post suggested the Koss SB45 as another alternative. This also has an electret mic, but somewhat different fit over the ears, and it is cheaper.
> 
> https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW

K6LL, a serious contester, likes this headset. I noted this in a piece I 
wrote several years ago for National Contest Journal. GM3SEK reported 
that Yamaha products are not sold in the UK, and that his wife likes the 
lighter weight Koss CS100 headset.
http://k9yc.com/ContestAudio.pdf
> 
> Do not get the Koss SB40. That is the same headset as the Yamaha CM500, but with an inferior dynamic mic.

There is nothing inherently inferior about dynamic mics, especially for 
speech -- the vast majority of mics used in sound reinforcement and 
broadcasting are dynamic mics. But like any technology, some products 
are better than others.
> It is normal for earpads to wear out. I replaced the pads on my Grado SR225e phones after five years.

Yes. I replace earpads on my Sony MDR7506 periodically.

For many things we wear, comfort can be important, and, with headsets, 
that depends on the size and shape of our heads and even our ears, as 
well as the design and manufacturing quality of the headset. For many 
years, I've slept wearing Sony MDR7506 phones listening to jazz, and I 
also use them working CW-only contests. I find the CM500 equally 
comfortable.

73, Jim K9YC