There's a notable improvement in the audio when holding the tablet landscape with your hands gently holding the tablet, which kind of cups the sound around to the front. Still, mobile device = not great sound. I can't stand to listen to music through mobile device speakers, or even laptop speakers for that matter. Works ok for watching videos though.
Comparing mobile device speaker audio quality is like comparing which tastes better - poo, or poo with nuts or bits of corn in it. It's all crap.