DNX-03 is a three-band stereo compressor plugin designed for Windows 64-bit systems, drawing inspiration from classic analog models while incorporating modern enhancements. It divides the audio signal into three distinct frequency bands using gentle first-order filters, allowing precise control over low, mid, and high ranges. Each band is processed through its own compressor and stereo processor, enabling detailed adjustments to compression, gain, and stereo width, which results in a refined and balanced sound.

This plugin offers extensive features suited for audio mastering, including adjustable crossover frequencies ranging from 20Hz to 20kHz to tailor the frequency splits effectively. It includes noise reduction capabilities and four dedicated stereo enhancement controls—one for each frequency band plus an overall output control—allowing for improved spatial clarity. Visual feedback is provided through multiple VU meters that display gain reduction, output levels, and RMS values with analog-style moving coil emulation for accurate monitoring.

Additional functions such as a one-click limiter set to 0dB, an internal tube saturator for adding warmth, and a pre-amplifier with a ±24dB range enhance creative flexibility. The plugin also features a balance control and an automatic bias cut function to optimize signal integrity. Comprehensive documentation supports users in maximizing the plugin’s potential, making DNX-03 a powerful tool for mastering engineers seeking precise multi-band compression with advanced stereo shaping capabilities.