Equitech 2R 120V 15A/20A Balanced Power System (Demo Deal)
Also, you'll need to know how many “circuits” you have in your studio (how many dedicated 15A or 20A breakers apply to outlets in that room). You will need one Equitech for each circuit. Most single room studios are good with one Equitech 2R or 2RQ with a 15A input cable.