The Denon ACM1HB is a setup and calibration condenser microphone designed for compatible Denon AV receivers. It is used during the receiver's automatic speaker setup process to measure room acoustics, speaker distances, levels, and other supported parameters for proper audio calibration. Connect the microphone to the designated setup microphone input on a compatible Denon receiver and follow the receiver's on-screen calibration instructions. This microphone is intended specifically for supported AV receiver setup and room measurement functions and is not designed as a general-purpose recording, vocal, or communication microphone.

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