The NX Audio RX 4000 is a professional-grade, 2-channel Class AB power amplifier widely regarded as a "workhorse" in the Indian professional audio market. It is specifically engineered to handle the irregular power conditions and low voltages often encountered in demanding live sound environments.

: Detects abnormal load conditions and mutes the output to prevent transistor failure [2, 9]. Over-Temperature Protection (OTP)

Some of the key components in the NX Audio RX 4000 circuit diagram include: