PA7 / PA7 Plus

· Check the power adapter. Only connect the power adapter to a power outlet, not to the unit. If the LED on the adapter blinks or does not light up, the adapter is defective.

· Check the power connection.

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· The device did not power on. Check LED and the power connection.

· Check that the proper input source is selected in the front panel.

· Check the connections for all devices.

· Insert connection cables all the way in.

· Check the volume of all devices and whether they are muted.

· May be caused by high temperature. Turn the power off, wait for the unit to cool down sufficiently, and then turn the power on again. Please place the unit in a place having good ventilation.

· Too low load impedance or short-circuit load

    a, Check if the speaker cables are connected in place. (Note: when connecting the speaker cables, there can be no bare leakage of copper wire touching the metal enclosure.)

    b, Check if you have followed the connections as per our instructions in user manual.

    c, Check if the speaker cables are defective, try with other cables.

    d, Check if the speakers are defective.

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· One channel’s positive output and negative output mayb be reversed, please check and correct it.

· The cables may not be connected correctly, check and reconnect them.

· Probably overloaded. Try turning down the volume.

· Check to see if the problem is with the source, downstream equipment and cables.

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Check to see if the problem is with the source, downstream equipment and cables. You can try swapping the left and right channel connections.

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Check to see if the problem is with the source, downstream equipment and cables. You can try swapping the left and right channel connections.

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The amplifier is already internally bridged. So no you can't short the any of the output terminals together.