Mr. Wonderful
Member
Even worse than normal radio?
The bass is way louder, yes. It sounds like they clip the high frequencies or something, too (as Apple Radio always has since it launched), though that may partially just be the bitrate at times.
The audio chip on the iPhone literally doesn't support 24-bit bitrates. It supports up to 192 sample rate (if memory serves), but the bitrate is stuck at 16. So iTunes won't even let you drop 24-bit music on your iPhone. Hopefully if Apple starts to sell lossless music on iTunes that'll change. If you're saying that even 16/44 music gets compressed on the iPhone, I don't see any technical reason why they'd do that.
Last I heard, it was speculated that the iPhone 6 has the hardware to support 24-bit/96kHz, but not the software support.
http://www.macrumors.com/2014/09/26/iphone-6-hd-audio/