The Marantz SM-11S1 Premium Series stereo power amplifier is a no-compromise audio component designed and engineered to provide extraordinary sonic performance. With technology derived out of the Legendary MA-9S2, the SM-11S1 is constructed using only the highest-quality components, selected for optimum sonic purity. The Marantz SM-11S1 appearance is as its sound quality, available in silver or gold finish with a clean, synoptic front panel. The SM-11S1 is designed to complement Marantz´s PM-11S1, to bring out a even better fidelity, resolution and musicality in either a bridged or bi-amping setup.