I'm using two PS Audio Ultimate Outlets (15 amp high output) and can highly recommend them for all components (including video). They will not restrict current and have the same capacity as your wall socket.
The power strips/surge protectors of the type it sounds like you are using will definitely degrade the sound. The Ulitmate Outlet cleans, protects from surges and also isolates digital components from putting any sort of interference back into the house power line that could be picked up by other components. They also have a product called the Juice Bar, but it sounds like that's more than you need for the number of components you have.
The power strips/surge protectors of the type it sounds like you are using will definitely degrade the sound. The Ulitmate Outlet cleans, protects from surges and also isolates digital components from putting any sort of interference back into the house power line that could be picked up by other components. They also have a product called the Juice Bar, but it sounds like that's more than you need for the number of components you have.