1. First connect the preamp or power amplifier with high quality audio cable.
  2, plug in the DC24V power supply
  3, boot Bluetooth board power, the green light on the motherboard is long, red light is shining, at the same time, turn on the power of the preamplifier, power amplifier power, power off first, power off, preamp, Bluetooth, this order can not be mistaken!
  4. Turn on the Bluetooth function of the mobile phone and light up the Bluetooth icon. Generally, the mobile phone will automatically search for the Bluetooth device to confirm the pairing. After the pairing is completed, the speaker will beep once. Please pay attention to the preamp or the amplifier beforehand. At the right volume.
  5, open the phone to play the software, you can listen to music.

Note:
      Before powering on the Bluetooth board, the Bluetooth function of the mobile phone should be turned off. After the Bluetooth board is turned on, turn on the Bluetooth search of the mobile phone, so that it can be paired normally. If the Bluetooth status of the mobile phone is turned on first, the Bluetooth board may not be paired.