1. Fine workmanship: Large capacity, reasonable design, beautiful appearance, circuit board design with precise cutouts and lines, free for welding, very suitable for DIY. 2. Frequency Divider: Treble and bass dual frequency support, helps to transmit the treble signal to the tweeter unit and share the bass signal to the subwoofer unit. 3. Excellent Sound Experience: The signal is transmitted without obstruction, making the treble clear, increasing the bass intensity, and allowing you to enjoy clear and natural music freely. 4. How it Works: The mixed audio signal is separated into treble and bass, and then sent to the corresponding treble and bass speaker unit for playback, to improve sound quality. 5. Dual Frequency Division: Treble 12dB/oct, Bass 12dB/oct, widely used in treble and bass speakers, full-frequency car speakers or use treble, bass alone.