The Statement NAC S1 preamplifier and NAP S1 mono power amplifiers are designed to supply the performance and dynamics that Naim’s customers have come to expect, but on an even greater scale and with the most demanding high-end loudspeakers. The NAP S1 mono power amplifiers are each rated at a massive 746 watts (one horse power) into 8 ohms, 1450 watts into 4 ohms and over 9000 watts burst power into 1 ohm.