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• Make sure that the distance between your device and the BT20A
PRO is not too far, place your device nearer to the BT20A PRO.
• Make sure there are no obstacles between your device and the
BT20A PRO. Obstacles will affect the Bluetooth operation distance.
• Please try to change to another Bluetooth audio source to test.
• Please replug the power supply, move the amplifier to another room
and test it again.
• Restart the BT20A PRO and then try to connect again, try to use
another brand of mobile phone or device.
Why the sound is intermittent in Bluetooth mode?
• Use another Bluetooth device to have a try.
• Ensure that there is no other electronic equipment between the
BT20A PRO and the audio source which may cause interference.
• Put your device closer to the BT20A PRO.
• Replug the power supply.
One channel does not work?
• Please test whether the Bluetooth and AUX inputs have the same
problem first.
• If these two modes have the same problem, swap the speaker
cables of the left and right channels, or change to use another
speaker, and then test whether this channel still does not work;
• If only AUX mode does not work, change the audio source, change
the audio cable, and test again, and make sure that the audio source
and cables both deliver stereo sound, not MONO.
Can’t be powered on?
• Make sure that the LED light on the power adapter stays on.
• If it does not light up: Unplug the power adapter from the BT20A
PRO, plug the power adapter directly into the AC power source, and
see if the LED will light up. If it still does not light up, there may be a
problem with the power adapter. Please contact us to replace the
power adapter.
• You can use a DC 24V-48V power adapter of a camera or router to
connect the BT20A PRO to test whether it can be turned on.
The BT20A Pro can be used as a pre-amp?
• Yes. There is a PRE-OUT port on the rear panel, which allows it to be
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