Amazing noone suggested you to actually do the calibration!
Don't just use 14bit, use 14 bit calibrated mode and do the calibration (otherwise it will sound just like 14bit). Start by doing the calibration (Cybersound from aminet), then setting up an AHI unit to 14bit calibrated mode, then in the player you're using you NEED to select that unit. Calibration can make a big difference in some cases.
