That may be your experience but it is not mine. My MTW4 and AZ~80 sound great using MBA and iPhone ..full stop. So much so, that on some songs I ask myself if I can hear a difference using aptX Adaptive and LDAC, rather than AAC.Take in to account Apple has a special Bluetooth chip called the W1 which allows compatible apple devices to have much higher quality then standard AAC.
Apple just cares that its accessories work well with their devices, for the rest of it they couldnt give a damn.
So expect your iphone to only work well and have high quality audio with your apple earpods/pro/max.
This is one unarugable fact: With all this testing I've done, I have some CRAP recordings. Anyone remember Napster and Limewire? I found MP3s in my collection less than 100 kbps! A nostalgic look back at digital music piracy in the 2000s. It really was the Wild West back then!
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