Just curious, how would this not correlate to higher quality for headphones? I thought that having a DAC took the uncompressed audio from the device to be amplified elsewhere.

So I’m new to this forum. I’m a computer engineer and I love looking at the built in amplifier ICs in mobile phones. I came across a teardown of the new Motorola X and saw it has a NXP TFA9890 High Efficiency Class-D Audio Amplifier with “adaptive sound” and Qualcomm WCD9310 Audio Codec. “It can...