Adjustable output amplitude The receiver provides two output amplitude settings, selectable via the power button, enabling better matching with different amplifiers and delivering a clearer signal with reduced whistling. 360degree sensitivity pickup microphone head Features a sensitivity 360degree microphone head for fullcoverage pickup, strong noise suppression, and faithful voice recording. Longdistance wireless transmission Wireless amplification support over a distance of up to 60 meters, allowing use across rooms or outdoor spaces without wires. 2.4 GHz wireless transmission Utilizes 2.4 GHz wireless transmission for stable signal delivery, long receiving distance, and improved noise reduction and antiinterference. Use scenarios Classroom or lecture hall: teacher uses the wireless receiver to project clear voice through a speaker system for large groups. Small stage or live performance: presenter or performer can move on stage while maintain clear vocal amplification. Meetings and conferences: multiple speakers use the system to ensure consistent sound quality in boardrooms or event venues.