We found the KnowBrainer modified Plantronics noise cancellation capability and accuracy equivalent to the Andrea Electronics ANC 700 but with the convenience of a wireless solution with no dangling wire or bulky belt pack transmitter. We don't use the VoIP aspect of the microphone but found it hard to beat the convenience of this wireless solution which includes several wearing options.
You have eliminated the phone, now remove the wires. The CS50-USB from Plantronics extends wireless freedom to your softphone. It's the first wireless headset for VoIP applications with remote call detection and answer/end capability via PerSonoCallT software. Experience superior sound quality, stylish design, four comfortable wearing options and hands-free convenience via your USB port.
Product Features :
* Instant USB connectivity for easy compatibility and quick set-up for softphones
* The only complete wireless VoIP solution-take conversations up to 200 feet with no headset cables
* The first wireless with remote ring detection and call answer/end at the touch of a button, thanks to Plantronics' PerSonoCallT software
* Superior sound quality for clear, private, and completely secure calls, including noise-canceling microphone and TIA810a compliance for echo elimination.
Endorsement:
I LOVE The Plantronics CS50 USB microphone !!!!!! I am using the ear loop which is so light it doesn’t even feel like I am wearing anything!! I just read a 269 word medical article. I got ONE error – so that gives me a rating of 99.6!! BUT – I did not count any of the punctuation marks – or any commands (“New paragraph” X 3) – so I really believe my accuracy rating is even closer to 100%. By the way, my audio check gave me a 26 (two times in a row)! I call that perfect – and better then my Sennheiser MD 432 II!! (Anybody want to buy a Sennheiser MD 431 II in perfect condition?). Thanks for selling me this wonderful mic!!!
D. Ciardi ……Florida
Endorsement:
After using it just 24 hours I LOVE the Plantronics CS50-USB. Of course the quality will Skype is excellent and Dragon is doing very well with such limited training. I must say I found it hard to justify the price before I bought it. But my time is reasonably valuable and now I have it, it is obvious it will pay for itself quite quickly.
J. Nott ……California
Technical Documents


