The Meridian Prime Headphone Amplifier ensures you don’t have to compromise on audio performance just because you want to use headphones. It will act as an interface, signal amplifier and noise pollution cop between your headphones and just about any kind of audio input. It accepts three different kinds of inputs. One is for USB sources, and another one for pure analog inputs on RCA. The third one is for portable devices such as your iPhone or tablet. The ASP (Analog Spatial Processing) used by the amplifier creates an “outside-the-head” music system effect even though you’re using headphones. You can plug in the Meridian Prime.