MERUS™ class-D audio amplifier, 2x37 W, 10-20 V, ultra-low idle power, inductor-less operation, with volume control and peak limiter The MA2304PNS is a 2x37 W audio amplifier with integrated audio DSP and I2S/TDM audio interface. It features the MERUS™ multilevel switching amplifier technology enabling unmatched power efficiency at both low and high output power. Multilevel switching also relaxes EMI and enables inductor‑less applications with lower cost and no compromise in audio performance or efficiency.