Function and design: The 3.5 mm professional calibration microphone is designed for audio video receiver home theater systems, enabling accurate speaker output level calibration that adapts to your room's unique acoustics for an immersive sound experience. Wide compatibility: Compatible with approximately 150 receiver models, this measurement microphone works with numerous home theater setups, providing a versatile addition to your audio equipment for sound adjustment. Easy setup: Simply connect this measurement microphone to your system and follow your receiver's calibration process—no technical expertise required. The straightforward connection makes it easy to calibrate your audio system effortlessly. Enhanced listening experience: By correctly adjusting speaker output levels, this calibration microphone helps create an immersive sound environment, bringing movies, music, and conference calls to life with balanced audio throughout your space. Use scenarios: Setting up a home theater with a surround sound AV receiver (5.1 or 7.1 systems). Recalibrating an existing system after moving furniture or adding speakers to maintain balanced sound. Improving audio for movies, music playback, and conference calls in living rooms or small studios.