7: Can I use headphone with this product?
• No, the BT20A cannot be connected to headphones and only
supports passive speakers.
8: How can I switch between Bluetooth input and RCA
input?
• You can connect this amp via Bluetooth as well as wired input.
But if Bluetooth connects, playback from the RCA input is
interrupted. You need to turn off the Bluetooth from your device if
you use RCA input when Bluetooth pairing.
Input priority: Bluetooth input > RCA input
9: Why there is no voice from my amplifier?
• Please check whether the cable of power supply is connected to
BT20A and whether the power indicator is on.
• Make sure the BT20A's indicator light is on when the power is
turned on.
• Please check that the BT20A and your source components are
turned on and not set to minimum volume, if possible replace
your source and test again.
• Check that the wire connections from the audio source to each
speaker in the amplifier are connected correctly.
• Please check that the cable is not loose, damaged. Incomplete
connection is one of the main reasons for no sound.
• Please make sure the Bluetooth is paired, if Bluetooth is
connected, the playback of RCA input will be interrupted. If you
want to connect this amplifier with a RCA cable, you need to
interrupt the Bluetooth first.
10: My Bluetooth device cannot pair with BT20A?
• Make sure that BT20A is powered on.
• Make sure that BT20A is not paired with other devices.
• Make sure that the distance between your device and BT20A is
not too long, close your device to BT20A to have a try.
• Make sure there are no obstacles between your device and
BT20A, obstacles will affect the Bluetooth operation distance.
• Please try to change another Bluetooth audio source to test.
• Please reconnect the power supply to the BT20A, and move the
BT20A to another room to have a try.
• Restart the BT20A and then try to connect again, try to use
another Bluetooth device.
11: How much power does this use in standby mode? Can
this amp be left on all the time?
• This is the class D amplifier, it will cost very low power when it is
in standby mode. It can be connected all the time and it is safe
without power consumption.
12: Sound quality is not good?
• Make sure all the cables are fully connected.
• Adjust the treble and bass control of the power amplifier to
achieve the right tone.
• Please try to change the sound source and cables to test.
13: Should I unplug the power cord?
• If the item will not be used for a long time, please unplug the
power plug to prevent the item from being burnt due to lightning
strike.
14: Can I bridge channel 1 and channel 2 to get 200watts?
• NO, this amplifier can't be bridged.