ITEM NAME:TDA7492P Digital Amplifier Board Wireless Bluetooth 4.0 Audio Receiver P9Q9 TDA7492P Digital Amplifier Board Wireless Bluetooth 4.0 Audio Receiver P9Q9 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 (.Audio input: stereo input various versions of the Bluetooth connection, using CSR8635 Bluetooth chip, Bluetooth V4.0, high software compatibility. 1x Wireless digital HIFI Bluetooth audio receiving power amplifier TDA7492 chip.