Universal Audio Apollo x4 Gen 2 STU – UAD Analog Classics Pro + UAD Native Pro

The Universal Audio Apollo x4 Gen 2 STU is a professional desktop Thunderbolt audio interface designed for recording, music production, mixing, and studio monitoring. It combines high-quality analog I/O, four Unison microphone preamps, powerful UAD processing, and flexible monitoring in a compact desktop format.

The four Unison preamps provide access to detailed microphone and preamp emulations, while the dedicated Hi-Z input makes it easy to connect guitars and basses. High-resolution 24-bit/192 kHz conversion helps deliver detailed audio for professional recording and mixing workflows.

The STU bundle includes UAD Analog Classics Pro and UAD Native Pro plug-in collections, providing a broad selection of processors and effects for recording, mixing, mastering, instruments, EQ, compression, reverb, and other studio applications.

Key Features

• Apollo x4 Gen 2 desktop audio interface

• 4 Unison microphone preamps

• UAD DSP processing

• High-resolution 24-bit / 192 kHz audio conversion

• Front-panel Hi-Z instrument input

• Thunderbolt connectivity

• Multiple analog line outputs

• Dual headphone outputs

• ADAT optical digital expansion

• Low-latency UAD monitoring

• UAD Console software for routing and monitoring

• UAD Analog Classics Pro plug-in collection

• UAD Native Pro plug-in collection

• Compatible with major DAWs and LUNA

Specifications

• Brand: Universal Audio

• Model: Apollo x4 Gen 2 STU

• Product Type: Desktop Thunderbolt Audio Interface

• Mic Preamps: 4 × Unison

• Instrument Input: 1 × Hi-Z

• Resolution: Up to 24-bit / 192 kHz

• Analog Inputs: 4 × XLR/TRS Combo

• Monitor Outputs: 2 × 1/4"

• Line Outputs: 4 × 1/4"

• Headphone Outputs: 2

• Digital Expansion: ADAT Optical

• Connection: Thunderbolt

• DSP: UAD Processing

• Software: UAD Console, UAD Analog Classics Pro, UAD Native Pro, LUNA Compatibility