Universal Audio Apollo x4 Gen 2 – 12x18 Desktop Thunderbolt Audio Interface with 4 Unison Preamps & QUAD Core DSP (Essentials+ or Studio+ Edition)

The Universal Audio Apollo x4 Gen 2 is a powerful desktop audio interface that delivers elite-class A/D and D/A conversion, real-time UAD plug-in processing, and 4 Unison™ mic preamps in a compact format built for professional recording and mixing. Designed for producers, musicians, and engineers, the x4 Gen 2 combines the sonic quality of UA’s rackmount interfaces with the flexibility of a desktop unit.

With 12 inputs and 18 outputs, including 4 Unison-enabled mic preamps, 2 front-panel Hi-Z instrument inputs, ADAT digital expansion, and multiple line/monitor outputs, the Apollo x4 Gen 2 offers versatile connectivity for tracking bands, instruments, and vocals. Its onboard QUAD Core DSP engine lets you run UAD plug-ins in real time with near-zero latency — giving you access to legendary analog tones and effects without overloading your computer’s CPU.

Gen 2 upgrades include:

• Enhanced conversion with up to 24-bit/192kHz resolution and ~129 dB dynamic range.

• Assistive Auto-Gain for quick, accurate input level setup.

• Apollo Monitor Correction with Sonarworks SoundID integration for precise calibrated monitoring.

• Bass Management with subwoofer routing and immersive monitoring support.

• Plug-In Scenes for instant recall of custom UAD chains and routing setups.

Editions Available

• Essentials+ Edition – Includes 30+ UAD plug-ins: compressors, EQs, reverbs, channel strips, guitar/bass amps, and more — a complete starter toolkit for professional production.

• Studio+ Edition – Expands your library to 58 UAD plug-ins, adding premium analog emulations, advanced dynamics, instruments, and creative effects for a full-scale professional studio experience.

With its balance of world-class conversion, QUAD DSP power, and modern workflow tools, the Apollo x4 Gen 2 is the ultimate desktop interface for serious music creators who demand professional results.