From dramatic distinction to dramatic design, Pioneer^s new GM-Series amplifiers are thrillers in every sense, pushing the limits of flexibility and functionality. New pioneer amps brilliantly integrate high-power performance superior to that of previous models in space-efficient size for flexibility of installation in various car cabins. Pioneer amplifiers automatically select the proper input signal mode, either RCA or speaker level. Nominal power (RMS) output at 4 W 60W x 2.