Quiet switch operation with minimal impact on the speaker The switch noise is small and does not significantly affect speaker performance. It is recommended to add a horn protection circuit to further reduce switch transient noise and to prevent output DC from damaging the horn if the power amplifier is damaged. Low baseline noise and stable output The bottom noise is small. Zero offset is minimal, and no debugging is required after installation. The output zero drift voltage generally does not exceed 50 mV and remains relatively stable. Compatibility and performance Designed to work with typical power amplifiers and horn loaded speakers. Provides protection for horn drivers and supports easy, straightforward installation without extensive tuning. Practical use scenarios Professional live sound systems using horn loaded speakers in clubs or venues, where protecting the horn and maintaining clean audio are critical. Conference room or corporate event setups with horn driven loudspeakers requiring reliable low noise and protection. Home theater or studio environments using horn tweeters that demand low audible noise and quick, nocalibration installation.