Summary: What can I say, it is a condenser microphone and a comfy set of headphones that go completely around your ears. I use the same audio levels on my radio as I do with the Icom microphone, didn't have to change a thing. I got my headphones from Amazon and went with the K6VHF's 8 Pin Icom adapter from Ebay to connect it to the radio.
Excellent Audio, High Output Electret, Extremely Comfortable
15 November 2014
Summary: I own and use an FT-1000MP. Although the MP does not have an equalizer, the 1000MP does, with EDSP, have five different transmit "EDSP" microphone settings. These settings are: OFF, 1, 2, 3, 4. OFF is pass through of the audio from the microphone, same as EDSP off. Two low cut, higher frequency microphone outputs, EDSP 1, 2 can be used for contesting. Additionally, two high cut, lower frequency, filtered, 3, 4 can be used for ragchew.
Summary: I looked around a bit an ran into the Yamaha CM500 headset. Easy to wear for long sessions. Not heavy. I get excellent reports over and over with nothing added into my Icom 756 pro III. I often get feedback from others that it sounds much better than the dedicated communications headsets. Nice balanced sound without that hard to listen to edge of others. I turn the compression on when I want to punch through.
Summary: I purchased one of these for my Elecraft KX3 on the recommendation of a user of both during an on-air conversation. I thought his audio sounded very good. I paid about $55 total for this headset. I used it with the KX-3 and an adapter and it works great. I made my own adapter for a Kenwood TS-990 and I love using it with a foot switch for PTT.
Summary: I like to do a bit of contesting and so wear the headphones for hours at a time. These are among the VERY few phones I've tried that are comfortable for EXTENDED wear. I got mine for less than $50 and have used them for several years now without a lick of trouble. The mic works fine with my K3. (I must say that I do not do a lot of SSB work.
OK, I guess... good enough but uninspiring overall
14 July 2014
Summary: I am a headset junkie and while the Yamaha CM-500 is good enough, I don't agree it is worthy of all the fuss and acolades it gets, especially with a $60 price tag. This a a reasonably well made, comfortable, and durable enough headset for the price, although I have had to repair my friend's set with a new microphone boom, and another friend's set died in the middle of the CQ WW 160 phone contest... but it is not an outstanding performer in any way.
Bang for your buck , go with it ......+++++++......
6 July 2014
Summary: Talked to another ham on 40 meters , and I was impressed when he told me what his mic was . So I bought one myself. I have been getting good reports. Works well on my kenwood 570. My receive seems to be good also. Can not go wrong with this item. Price was right to.
Summary: I had purchased a Heil Pro 6 and it seemed uncomfortable after extended use. On a tip from AC0C I bought the Yamaha CM500. I purchased an adapter from W2ENY on ebay for the Yaesu 8 pin mic connector on my FT-2000. The audio was too hot so I added a 30K ohm resistor on pin 8, the center pin and that made the audio drive easy to adjust. During on the air testing I received one negative comment from a Heil lover in a roundtable.