Follow this tutorial and feel free to donate to the developer:
At one point in the instructions your have to type as root:
and you might encounter an error like the File system is read-only.
If this is the case, do this in a Terminal emulator:
# mount -o rw,remount /system
# mount -o ro,remount /system
Basically you will mount your system as writable for awesome command to work, then reboot (if the command reboot doesn’t work, reboot manually) and then remount the system as read-only.
And one last minor thing…on my HTC Sensation, i don’t see any difference in the quality of sound. o.O
Hope it will work on your device.