I have a Note 2 and a friend has the S3. We are both using custom roms with some SoundAlive driver or something and the sound quality is extremely good thanks to the Wolfson DACs in both phones. It defeats even my moms new Note 4 at sound quality as they both don't have this dac and even after modification can't sound as good. This is pretty much why we're looking at the S3 Neo for a friend who loves listening to music. But if you say its Qualcomm then I'm not too optimistic, Qualcomm have been known to throw in their own dac and with the Neo being a cheaper/newer variant of the previous phone theres no guarantee about Samsung sticking to their old chip over the Qualcomm thrash. Ugh will do more research, probably try finding a demo piece.