And that is the audio codecs. Both support AAC & SBC, which are the standard ones seen on almost all earbuds, and both support multipoint pairing. But they also support Qualcomm’s APTX Classic & Adaptive. The AptX Adaptive offers a better bit rate and more robust signal than AAC. But at this point in time, only some Android phones support it.
And here is the 2nd reason the Pi8 is more expensive than the Pi6. The Pi8’s support ‘AptX Lossless’. Which means they can receive much more audio data much faster. AptX lossless supports a 16-bit, 44.1 kHz CD lossless audio quality signal. But only if you have a device that has AptX lossless. So if you don’t, let’s say you’re an iPhone user for example you shouldn’t write off the Pi6… at this point.