Speak-IT Premier CM-2000BT Wireless Conference Microphone/Speakerphone Kit (Large)

Surprisingly good piece of equipment

I was quite delighted when I tried this in our mid-sized board room and it worked perfectly. Especially the volume and the echo cancellation were outstanding. The fact that you can position the little satellite microphones right in front of the speaker highly improves the quality. With the chain ability of these, you can cover quite a large room. The base of comparison was a Jabra Speak 510 which had a few issues with picking up speech properly in that room (however that works perfectly in a smaller room)