ITEM NAME:TDA7492P Digital Amplifier Board Wireless Bluetooth 4.0 Audio Receiver B8A7 TDA7492P Digital Amplifier Board Wireless Bluetooth 4.0 Audio Receiver B8A7 100% Brand New and High Quality Power: 2.1 interface 12 ~ 24V DC power supply ,Best for DC 24V 3A power Audio input: stereo input various versions of the Bluetooth connection, using CSR8635 Bluetooth chip, Bluetooth V4.0, high software compatibility Output Impedance: 8 ohms Best(4,6,8,16 ohm impedance can drive speakers) Output Power: Add pre-5532 output foot (