Douk Audio NS-13G MAX Class D Stereo Phono Power Amplifier TPA3255 2x120W 4 Ohm

The Douk Audio NS-13G MAX is a compact stereo power amplifier featuring a built-in MM phono preamplifier, designed to efficiently drive a wide variety of passive speakers while allowing the direct connection of a turntable. Based on the TPA3255 amplification chip, it delivers up to 2x120W into 4Ω at THD+N=1%, ensuring powerful, dynamic, and controlled sound reproduction with excellent energy efficiency. It also integrates a NE5532P operational amplifier combined with RUBYCON and WIMA capacitors, contributing to precise and musical sound reproduction with a low level of distortion.

The NS-13G MAX features an RCA line input as well as an MM phono input, allowing the direct connection of a turntable without an external preamplifier. It offers speaker outputs via binding posts, as well as a 3.5mm AUX output delivering a 2.4V output level, ideal for connecting an additional amplifier, an active subwoofer, or active speakers to create a 2.1 or multichannel system. Compatible with 4Ω to 8Ω speakers, it provides a signal-to-noise ratio greater than 107dB, a frequency response from 20Hz to 20kHz (±1dB), and extremely low distortion of 0.005% at 1kHz.

The device also integrates bass/treble tone controls (±6dB) as well as a Tone / Bypass switch, allowing either adjustment of the sound signature or complete bypass of tone correction for a pure and unprocessed audio signal. Its replaceable op-amp socket also allows the NE5532P to be replaced with other compatible dual operational amplifiers such as the OPA2604, OPA2134, or MUSE02, offering additional sound customization possibilities. Powered by 24V to 48V DC and supplied with a 48V / 5A power supply, the NS-13G MAX benefits from an optimized thermal dissipation system with side and bottom ventilation effectively limiting heat and dust accumulation. Its CNC-machined aluminum chassis ensures robustness, compactness, and easy integration into a desktop or home HiFi environment.