CCG writes - "The Tonor TC-777 is a 100Hz-16KHz frequency response USB microphone that has a sample rate of 44.1KHz-48KHz. The bit rate is 16 bit and the output impedance is 680 ohms. The sensitivity is -38dB to 3dB. The only disappointing spec is the Signal to Noise (S/N) ratio of 56dB. Ideally, you want 79dB or more."