Universal Audio Apollo x4 Gen 2 Thunderbolt Audio Interface Essentials

Universal Audio Apollo x4 Gen 2

The Universal Audio Apollo x4 Gen 2 is built for creators who want elite desktop conversion, real-time plug-in tracking, and serious monitor control in one streamlined interface. If you record vocals, guitars, synths, or full productions at home or in a professional room, it gives you that polished, ready-to-mix sound while keeping the workflow fast and intuitive.

With next-generation AD/DA and onboard UAD-2 QUAD Core DSP, the Apollo x4 Gen 2 lets you track through Unison-enabled preamp and channel strip models in real time, then combine DSP with native processing for larger mixes. It also adds modern monitoring tools like optional Apollo Monitor Correction, Bass Management for sub integration, and Auto-Gain so your levels are set quickly across multiple inputs.

As an authorized dealer, Pro Audio Reserve ensures you’re getting a genuine unit backed by full manufacturer warranty and long-term support.

Elite-Class Conversion That Makes Decisions Easier

Universal Audio designed Apollo x4 Gen 2 to deliver the lowest distortion and widest dynamic range of any desktop Apollo to date, so you can hear exactly what you are capturing. That pays off immediately when you are dialing mic placement, setting compression on the way in, or making mix moves that need to translate across speakers and headphones.

When your front end is this clear and stable, tracking feels calmer, and your sessions tend to move faster because you are not second-guessing what you are hearing.

Real-Time Unison Tracking, Plus a Strong Hybrid Workflow

The Unison preamps let you track through faithful emulations of classic studio hardware while the interface adjusts impedance and gain behavior so your microphone interacts naturally with the modeled front end. For vocals, guitars, and bass, it is one of the quickest ways to land a finished tone without adding latency or breaking creative momentum.

When it is time to mix, you can lean on onboard DSP where it helps most, then stack native processing on your computer for bigger sessions. It is a practical balance that scales well as projects grow.

Monitoring Features You Actually Use Every Day

Apollo x4 Gen 2 includes full-featured monitor control with speaker switching and integrated talkback, plus two headphone outputs for easy cue management. Auto-Gain helps you set levels across multiple inputs quickly, and Bass Management is there when you want your sub to integrate cleanly for reliable low-end decisions.

Thunderbolt 3 connectivity keeps latency extremely low and gives you room to expand via digital I/O, making the Universal Audio Apollo x4 Gen 2 a strong long-term centerpiece for a serious desktop rig.

Key Highlights

• Desktop 12-in/18-out Thunderbolt 3 interface with onboard UAD-2 QUAD Core DSP
• 24-bit/192kHz AD/DA conversion for a clean, confident front end
• Unison mic preamps for real-time tracking through classic studio models
• Hybrid workflow combines onboard DSP with native processing
• Monitor control with speaker switching, talkback, and dual headphone outputs
• Auto-Gain and Bass Management features support faster sessions and better translation

If you’re building out your recording chain, the Apollo x4 Gen 2 fits naturally inside our audio interface collection,

Apollo x4 Gen 2 Specifications

What’s in the Box

Thunderbolt 3 cable sold separately. UA Essentials+ Plug-in Suite included. macOS 10.15 or later required (Quad Core i7 or higher). Windows 10 Anniversary update or later required (Quad Core i7 or higher).