The NSP NA424 is a 4-channel 240W rated power amplifier that supports both 8-ohm and 100V line systems. With a wide frequency response (20Hz-20kHz) and low distortion (<0.1% THD), the NA424 delivers clear, intelligible audio — ideal for background music and voice announcements.

Energy-Efficient Class-D Amplifier

Built with modern Class-D technology, the NA424 offers high efficiency with minimal power consumption and lower heat output for long operating hours, packed in a compact 1U rack-mount design for space-saving installations and continuous use environments.

Flexible Connectivity & Easy Integration

The NA424 features balanced line inputs via Phoenix connectors with independent channel gain controls. It also supports low impedance (4-16 ohms) as well as 100V high impedance loudspeakers.

Reliable Protection System

The NA424 is engineered for safety and durability, with each channel equipped with independent protection, clipping and output status indicator lights. The amplifier also provides comprehensive protection features including short-circuit, overload, high temperature, clipping, as well as DC protection.