![I have a Sony Kd48a9 and there are 2 auto options. I know not to choose pcm for the arc, sub and one's. But what is the difference between auto 1 and I have a Sony Kd48a9 and there are 2 auto options. I know not to choose pcm for the arc, sub and one's. But what is the difference between auto 1 and](https://preview.redd.it/wwkxfjueo9f61.jpg?auto=webp&s=d510f969afbaf681b1b8ac663f0bf2745e3c8ebf)
I have a Sony Kd48a9 and there are 2 auto options. I know not to choose pcm for the arc, sub and one's. But what is the difference between auto 1 and
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