I would like to re-stress the importance of power supply to the house 110 volt outlet. If at all possible, install a "dedicated" circut to that point. This is not as glamorous as super-duper IC, SPK, power cords but can be more important than all the others combined. Iv'e learned this the at the school of hard knocks. If not possible then a good outlet makes a difference. In an apartment situation a good extension cord to a different outlet than you use now sometime helps, if only to separate dirty digital from analog equiptment. Let us know how it all works out, best wishes, Mike.