The Yamaha WB699600 Calibration Microphone is a brand new product specifically designed for Yamaha audio systems. It is compatible with a wide range of Yamaha models, including the RX-V series, DSP-AX series, and YSP series. This calibration microphone is essential for accurately adjusting the audio settings of your Yamaha equipment to ensure optimal performance and sound quality. With its compatibility across various models, this microphone is a versatile tool for enhancing your home audio experience. Please message with any offers or questions. Thank you!