i have chance to purchase a stewart pa-1800 power amp & would like to know if it would be suitable as an amp for my bass rig. i believe it has no volume (gain) controls so it's wide open. would it be compatable with my ivp preamp that has gain & master on it? also i would like to use it with a 2x12 & a 2x10 but i wouldn't be able to balance speaker volume. would this amp be a drawback since it has limited flexibility? opinions & suggestions needed.