Reports on the list favor the Yamaha CM-500 or the Koss SB-45. Both have 
electret mics. In this price range (under a few hundred dollars), an electret 
mic is by far the best option.

The Koss SB-40 has a dynamic mic. I haven’t tried it, but making a good dynamic 
mic at that price is a huge engineering challenge.

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

> On Jun 21, 2016, at 5:19 PM, Jim Rhodes <jimk...@gmail.com> wrote:
> 
> I wore out one SB-40 over 15 to 20 years,  so I bought another one. Get
> good audio reports on the rare instances I get on phone.
> On Jun 21, 2016 3:12 PM, "Ken Arck" <k...@arcomcontrollers.com> wrote:
> 
>> I have a set of KOSS SB 40's and they're great on the RX side but the
>> cheap dynamic mic that comes as part of it sounds like @#*^%#@ on TX,
>> regardless of how I've tried to compensate using the EQ
>> 
>> Ken
>> 
>> 
>> 
>> 
>> 
>> At 10:27 AM 5/26/2016, Dave Hachadorian wrote:
>> 
>>> I forgot to mention that the SB-45 also has a nice padded headband.  It
>>> doesn't irritate the top of my bald head as much as the rough webbing of
>>> the CM500.  Judging from the pictures of the crowds at Dayton this year,
>>> this could be a very significant feature for a lot of hams!
>>> 
>>> Dave Hachadorian, K6LL
>>> Yuma, AZ
>>> 
>>> 
>>> -----Original Message----- From: Mike Harris
>>> Sent: Thursday, May 26, 2016 7:14 AM
>>> To: elecraft@mailman.qth.net
>>> Subject: [Elecraft] Headset
>>> 
>>> Hi,
>>> 
>>> If I remember correctly the Koss SB45 headset has been offered as a
>>> suitable substitute for the K3 weapon of choice the Yamaha CM500. Any
>>> experience out there?
>>> 
>>> My much used CM500 are starting to shed the leatherette covering and the
>>> foam inside the cavities is wearing away. CM500 can be rather difficult
>>> to source.
>>> 
>>> Regards,
>>> 
>>> Mike VP8NO
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>> 
>> 
>> ------------------------------------------------------------------------------
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>> http://www.arcomcontrollers.com/
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> ______________________________________________________________
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