This. I've noticed Bluetooth quality issues, and they are always either - The source is using low bitrates. SBC is a poor codec, but at the high bitrates (bitp

This. I've noticed Bluetooth quality issues, and they are always either - The source is using low bitrates. SBC is a poor codec, but at the high bitrates (bitpool values) it should be used at it sounds perfectly fine. - Just shitty hardware/DSP. If your Bluetooth speakers sound different over bluetooth than over line in, then the DSP/DAC processing going on in them is what is screwing up the audio, not the codec. "High quality" Bluetooth audio codecs are largely a marketing scam to get patent royalties, because it seems that when a standard actually manages to mandate a royalty free codec (a rarity these days!) companies just can't help but try to jam patented nonsense down people's throats anyway. I'm sure some products even deliberately gimp SBC just to make proprietary alternatives sound better.