The Marantz MA-9S2 is a power amplifier designed for high-end audio systems. It is part of Marantz's Reference Series and delivers exceptional performance with its advanced circuitry and premium components. The MA-9S2 has a power output of 200 watts per channel (8 ohms) and 400 watts per channel (4 ohms). It features a unique floating control bus system, dual-mono construction for each channel, and high-quality XLR and RCA inputs. The amplifier is known for its exceptional build quality and attention to detail.