usbPrecisionMic is a USB-connected precision test and measurement microphone that meets ANSI and IEC electrical and acoustic Type 1 standards. It works with Windows PCs, Apple Macs, Android devices, and iPad (using the Camera Connection Kit).<br>usbPrecisionMic is factory calibrated to +/-0.1dB using a NIST traceable pressure-compensated calibrator. The calibration factor for both high and low ranges are recording on the factory calibration card in dBFS, so that application software can be calibrated to provide an absolute SPL level.<br>The usbPrecisionMic body is built of beautifully finished nickel-plated solid bronze tubing that is threaded to accept a standard 1/2" microphone capsule.<br>All of the active electronics are in the microphone body, including the microphone preamplifier using a 5 gigaOhm input impedance resistor, precision 24-bit A/D converter, and the logic circuitry required to communicate over a USB digital audio link.<br>iPrecisionMic connects to the USB host device with a USB type A connector using a 1m (39") cable. Included with usbPrecisionMic is a USB OTG (on-the-go) flat type A female to USB micro adapter, so that usbPrecisionMic may be connected to smartphones and tablets running the Android operating system.