One glance at R4i & youll desire one. Listen & this emotion grows stronger because R4i produces a stunning sound that you will simply not expect from such an attractive & compact design. Comprising a multi format CD player, iPod dock, USB (Universal Serial Bus) playback port, DAB/DAB+/FM tuner & auxiliary inputs allied to a powerful amplifier/speaker system the R4i is in many ways a traditional music centre, though one designed & engineered for the 21st Century. The R4i is the result of our desire to design & build the best small audio products available. As an example, most compact systems use amplifier chipsets for simplicity & cost, but for R4i we developed our own Class A-B amplifiers using discrete component technology. This complex technique is usually only found in high quality, high value audio separates.