I know loudness alone doesn't set the audio quality boundry but thats the general issue I have found with the S/T they have great audio quality but just not loud enough. On the other hand htc one x/s for example the audio is ok but the phones are loud. samsuck just suck.
The note 2/s3 audio was poor tbh and people were banging on about wolfson DAC.
They were only good when used with external music players like power amp in my case, volume from normal music player was extremely low when you put it on bass boost (dont even know why they call it that might aswell call in bass reducer), even worse was when you had it on custom yes there was bass but where was the volume?. Only time it was sort of loud was on normal. Audio on sony phones is much clearer and theres more bass.
Samsung Galaxy S5 Black 16gb
Next phone: Galaxy Note 4 Black 32gb