I wouldn't necessarily ignore 1.3. After you've auditioned, if you're stuck on a couple / few amps in terms of how they sound, and the only difference is one has 1.3 and one doesn't, that could be your decision maker. After all, you might change your TV in the future
On the other hand, I wouldn't go with a worse sounding amp just because it supported 1.3. That would be madness!
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