SRS algorithm should have some options allowing users to adjust for different audio types. There is no options available in TF, not even a disable/enable switch for SRS, which really makes me suspect "SRS" is nothing but just a logo ASUS puts on the TF box.
But good audio from built-in speakers is not necessary for me. If I want good audio I can put on my headphone. All I need, however, is a loud enough volume that people can hear outdoor with background noise around.