The fact that the mic and sound adapters are colored instead of just cut out of the wire helps identify extremely easily which wire goes where. My son wears a 12. The predrilled screw holes fit just right w wall studs. Awesome quality. These were like slippers from a dollar store. The two will *not* connect to each other no matter how many times and different ways I try. may not be super pretty, but they work. Good speaker amazing sound. Aquí no sé si la culpa es del vendedor o de amazon. Went on rack very well.