MERUS™ class-D audio amplifier, 2x37 W, 10-20 V, ultra-low idle power, inductor-less operation, integrated DSP The MA2304DNS 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. An integrated DSP is available for basic speaker tuning.