Features: brand new and high quality Adopting copper for DC connector and fence type terminal, this Bluetooth-compatible board module for amplifier can withstand large currents, no heat, no damage to the wire. Our Bluetooth-compatible board for amplifier audio comes with AUX and Bluetooth-compatible two audio input methods, which means the transmission efficiency is high and the transmission for path is wide. Support 3.5mm wired input and Bluetooth-compatible 5.0 input, easy installation, mini size, perfect Bluetooth-compatible speaker. The Bluetooth-compatible 5.0 audio/speaker board for amplifier uses a high-performance audio filter that can output high-quality sound. With static for protection, overheat for protection, over current for protection, short circuit for protection. Specifications: Product name: Bluetooth-compatible tone pre-stage module Product module: ZK-PT1 Bluetooth-compatible Version: 5.0 SNR: >90dB Audio Input: 3.5mm audio input + Bluetooth-compatible 5.0 Output method: AUX output Number of Channels: left and right dual channels(stereo) Power range:DC 5~24V / 1A or more Colour:Black Material: ABS+alloy size:approx. 67x68x21mm/2.63x2.67x0.82in Package Includes: 1PC x Digital Power Amplifier Board note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!