Jerry,
I think its the TDA2822D that has been repackaged. See the specs attached!
Raj
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At 21/06/2018, you wrote:
The WX branded TDA2822 simply does not meet spec.
We have no idea what spec it meets, as WX does not have a datasheet for it.
In addition to an apparent absolute max supply voltage of around 6 or 8v,
it quite likely suffers in the audio quality department.