Hi all. Just been playing with some cheap (ECM-66B) microphone inserts and found they have a pretty poor performance compared with the human ear. I can hear some very quiet sounds in my room: the ticking of my clock and distant barking dog. This sensor can pick up sounds at this level but when the signal is amplified enough to hear them, there is a lot of noise with it. The S/N ratio is quoted at 40 dB, and sensitivity at 60 dB/microbar. It seems okay where it is next to or nearby a person's mouth, like a hand held microphone or a telephone. But if you stuck a pair on a dummy head and listened through an amplifier, you would not get a good sense of being in the room. So, do microphones get much better than this? Or is the ear such a marvellous organ that it is yet to be beaten?