Welcome to our shop! This Power Amplifier Module is designed to enhance your audio experience. Here are some key features and specifications: 1. Adjustable volume: The module comes with an adjustment button that allows you to easily increase or decrease the volume. 2. Protection mechanisms: It is equipped with anti-reverse protection, short-circuit protection, and over-temperature protection, ensuring safe and reliable usage. 3. Bluetooth 5.0: With the latest Bluetooth version, this module offers an effective transmission distance of 10-15 meters (32.8-49.2 feet). 4. Versatile installation: This module is suitable for various installation conditions, providing better audio performance for your home or car music system. 5. Wide range of applications: It is suitable for operation by college students, engineers, technicians, and anyone looking to enhance their audio setup. Material: PCB Working Voltage: DC 8~24V Bluetooth Version: 5.0 Transmission Distance: Approx. 10 ~ 15 meters / 32.8 ~ 49.2 feet (visible without obstruction) Number of Channels: Dual channel (stereo) Output Power (at 1KHz): 2 x 16W at 12V 4Ω 2 x 10W at 12V 8Ω 2 x 15W at 16V 8Ω 2 x 20W at 20V 8Ω 2 x 30W at 24V 8Ω (heat sink required) Adapted Speakers (30W~150W): 4Ω (8~12V power supply) 8Ω (8~24V power supply) 16Ω (8~24V power supply) Module Protection Mechanism: Power supply reverse connection protection, short circuit protection, self-recovery overheating protection. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.