Features: Supports highand low frequency adjustment frontstages and integrates Wireless5.0 CS8675 receiving solution, truly supporting APTXHD 24BIT losslesstransmission, BL50A also supports the 96K sampling LDAC Wireless protocol. After the Wireless outputmodule, the TI advanced Decodings chip PCM5102 is also added, which greatly improves the dynamic and detail level of Wireless compared to wire direct output of mobile phones. If you need a passwordsto connect, enter0123. Wireless have a distance of 7meters without obstruction. If it is lower than this value, please check if the back of theantenna is tightened! Crafted from aluminum, the BL50A CS8675 Amplifiers ensures long quality. Specifications: Material:AluminumAlloy Package Includes: 1x Amplifiers Board note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.