Just picked up the S23 Ultra a few days ago and am surprised how bad the audio quality is with AAC codec (while not the best-sounding codec out there, it was good enough for general listening on my Note 9).
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On the S23U, the treble sounds very splashy and there is an intermittent delay between the channels that there is a "doubling" artifact. I can confirm I am using AAC not another codec. The distortion is gone when using another codec such as LDAC or Samsung Seamless Codec.
Devices tested: Samsing Galaxy Buds 2 Pro, Sony Linkbuds S and Soundcore Space Q45.
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