Feature:1. Excellent Sound Performance: Featuring the advanced TPA3116D2 HIFI Chip with AM Interference Suppression, our amplifier delivers outstanding sound quality. Even during extended high power usage, it maintains a THD (Total Harmonic Distortion) of less than 0.1%, ensuring a superior listening experience.2. Versatile Voltage Compatibility: ZK 1002 supports a wide input voltage range from DC 5V to 24V, allowing it to be powered by 9V, 12V, 15V, 18V, or 24V sources. This adaptability ensures that you can easily find a suitable power supply.3. Dual Sound Input Options: Enjoy the flexibility of two sound input methods. You can seamlessly connect through the latest Bluetooth 5.0 technology for wireless convenience, or choose the traditional headphone (line in) connection for your sound source.4. Comprehensive Protecting: Our BT amplifier is meticulously designed to protect your investment. It incorporates multiple protective features, including over voltage protecting, under voltage protecting, over heat protecting, and short circuit protecting. Rest assured that your device is protected in various scenarios.5. Optimal Power Match: Please note that achieving the best sound output requires the right combination of sufficient sound input and appropriate power supply voltage and current. Different speaker impedances will affect the relative sound power. With adequate voltage and current, higher impedance speakers will produce lower relative sound power. Pay attention to these factors to optimize your sound experience.Specification:Item Type: Bluetooth Power Amplifier BoardMaterial: PCB, Aluminum Alloy, AcrylicSound Input: AUX, BluetoothOutput Power: 100W x 2Heat Sink: Large Heat Sink, Size: Approx. 36x25x10mm / 1.4x1.0x0.4inApplicable Speakers: 48, 50300WProtecting Mechanism: Overvoltage, Undervoltage, Overheating, Short Circuit.Package List:1 x Power Amplifier Board1 x Aluminum Alloy Shell1 x Acrylic Enclosure1 x Knob1 x Screwdriver1 x DC Power Cord10 x Screws4 x Stud1 x Nut1 x Screw RingNote:All data are measured manually, and there are certain errors in the measurement results.