LG introduced several models of C9 TVs. USA and Canada are three TV models.
The basic model with the designation PUA is presented in three versions with a screen diagonal of 55, 65, 77 inches.
The TV model C9AUA is offered with a screen size of 55 and 65 inches.
The TV model C9 with a screen size of 77 inches has the designation
Consider the difference between models of PUA TVs against AUA vs AUB.
So PUA or AUA. The change of the first letter indicates minor technical differences. In this case, TVs with the letters AUA or AUB do not support WiSA Ready. Wisa Ready without wired sound transmission from the TV to external speakers. To work using a range of WI-FI 5GHz.
AUB – OLED77C9AUB TV has a stand of a different shape. this is indicated by the letter B (design change).