4 Channel Mini Size Class D Amplifier

High-efficiency class D compact-size PCB

Frequency range: 20Hz – 20KHz 

Selectable high-level and low-level input 

Adjustable HPF and LPF

Input sensitivity: 200mV – 9V

Gain control for front and rear channel

Signal sensing and 12V remote out

Short, thermal and overload protection

Product Description

NSM-4020 4-channel mini-size class D amplifier delivers 20W RMS power per channel into a 4-ohm load. Leveraging efficient Class D amplification technology, the NSM-4020 not only delivers stable power performance but also effectively reduces energy consumption and heat generation, extending device life and reliability. It supports high-level and low-level input switching, offering excellent compatibility, making it easy to connect to both the original vehicle audio system and external audio sources. Equipped with adjustable high-pass filters (HPF) and low-pass filters (LPF), users can freely adjust the audio frequency range to suit different speaker types and listening preferences, achieving precise crossover and sound optimization, enhancing overall audio performance. A wide input sensitivity range (200mV to 9V) facilitates matching with various signal sources to meet the needs of different vehicle audio systems. A signal-sensing auto-start function ensures hands-free power-up, enhancing user convenience.