Dont expect too much from them the amp cause its not technicly an amp it is built in and plus its a 45/4. my recomendation to you is get better speakers than 50watt speakers cause that sucks ass no offense.
I have my highs which handle 200watts hooked up too a 200watt sony explode amp. (tweets fronts and back) and my subs(Audiobahn) are on a 600 watt amp.