If your low volume setting is too loud, you have to much voltage gain in your system. If your are happy with your amp and speakers (I luv Meadowlarks BTW), you should think about replacing your pre-amp with a lower gain unit, a buffer or even a passive. You could also try lowering the gain (aka raising the input sensitivity) of your amp by installing a voltage divider and/or changing feed back levels (check with the manufacturer on this).
I have always been cursed with this problem. Even pre-power combos from the same manufacturer gave me headaches (Rogue, C-J, Rotel)
Good luck,
Rob