[nix0n]

Switching the DAC will only help with quality, not with latency, because the latency is a software issue. Samsung has implemented software workarounds to skip some parts of the audio processing path and reduce latency, but I'm not sure how low it gets. See http://superpowered.com/androidaudiopathlatency and https://github.com/felixpalmer/android-visualizer/issues/5 for more info on all this.