Andrea C1-1024200-1 Model USB-MA External Digital Audio PC Microphone Adapter, Bypasses a computer's internal microphone input, creating superior low-noise audio, Small form factor - compact and portable
Andrea Communications USB-MA eliminates the noise problems that are inherent in most standard, off-the shelf computers. Often placed in close proximity to components such as the power supply and processors, internal sound cards or integrated audio systems can generate audible noise. The USB-MA uses high quality digital circuitry to bypass the computer's internal microphone input, converting the analog signal to digital. The result is increased clarity and performance of the stereo microphone for all digital audio applications including VoIP and speech recongition programs.

Key Features
Premium external USB microphone adapter with stereo microphone input
Bypasses a computer's internal microphone input, creating superior low-noise audio
Small form factor-compact and portable
Compatible with all current Andrea Communications microphones as well as any legacy microphones
Shielded USB cable

Specifications
Connections:
Microphone Plug 3.5mm/Pink
Operation:
Microphone Input 2 Channel Stereo
Sampling Rate 48k/44.1KHz/16K/8K
Temperature 0-70°C
Power Supply:
Supply Voltage 4.5-5.5VDC
Total Power Consumption 120mA
Bias Voltage 2.2V via 3.3K Resistor
Microphone Input:
A/D Convertion Resolution 16 bit
THD+N -90dB
Supply Bass Resistor 2.2K ohm @ 3.3VDC
Frequency Response 20-20,000Hz
Input Range 0-1.25Vms
Dynamic Range 96dB
Record Gain Range -6 to 33dB