OK so u want to run each sub off its own amp. in terms of watt/rattings look for a better named product (check on this forum if you have a question about any you come accross) and find one that has a rms rating near what your subs can do. if you are going to bridge the amp look at the bridged power ratings if u find a good deal on a mono amp that can push both subs see if the specs match your sub ratings. let us know what kinda subs ur planning on using and once again if u have any questions ask us here. im sure some one has used/is using what ur looking at. Hope this Helps!