Check the listing for details. Behringer ECM 8000-U USB Measurement Microphone. Condition: New. Listed at 56.90 USD. Easily Calibrate Your Space Calibrating a space or audio system is crucial to getting the best sound possible, and the Behringer ECM 8000-U USB Measurement Microphone helps make this process a total cinch. First, this measurement mic boasts simple plug-and-play functionality for Windows, macOS, and Linux, so all you need is the ECM 8000-U and your computer. Once connected, you can use the ECM 8000-U to quickly align your monitors or calibrate your control room, tracking booths, the stage environment in your venue, and much more. Sweetwater audio engineers attest that the ECM 8000-U’s linear 20Hz–20kHz frequency response and 24-bit/48kHz resolution work together with its omnidirectional polar pattern to provide you with extremely accurate sound capture.