Description
The Universal Audio Apollo x4 Gen 2 is a premium desktop Thunderbolt audio interface designed for musicians, producers, and project studios seeking professional recording quality. Featuring expanded I/O, QUAD Core DSP processing, and elite-class 24-bit / 192 kHz conversion, it delivers the performance and flexibility required for modern music production.
With four Unison microphone preamps and dual front-panel Hi-Z instrument inputs, Apollo x4 allows you to record through authentic emulations of legendary analog gear from Neve, API, Manley, and more. The included UAD plug-in bundle provides access to iconic compressors, EQs, reverbs, guitar amps, and studio effects used on countless professional recordings.
The Gen 2 platform introduces enhanced monitoring with UA’s highest-resolution D/A converters, Sonarworks-powered Apollo Monitor Correction, Auto-Gain, Bass Management, and Plug-In Scenes. Combined with the powerful UAD Console application and hybrid DSP workflow, Apollo x4 Gen 2 delivers a streamlined recording and mixing experience with exceptional sound quality.
Product Specifications:
Product Name: Universal Audio Apollo x4 Gen 2
Interface Type: Desktop Thunderbolt Audio Interface
DSP Processing: QUAD Core Real-Time UAD Processing
Audio Resolution: 24-Bit / 192 kHz
Microphone Preamps: 4 Unison Mic Preamps
Instrument Inputs: 2 Front-Panel Hi-Z Inputs
Analog Inputs: 4 Combo XLR/TRS Mic/Line Inputs
Line Outputs: 4 Balanced TRS Outputs
Monitor Outputs: 2 Balanced TRS Outputs
Headphone Outputs: 2 Independent Headphone Outputs
Digital I/O: Optical ADAT / S/PDIF Input and Output
Dynamic Range: Up to 129 dB
Monitor Correction: Apollo Monitor Correction Powered by Sonarworks
Auto-Gain: Supported
Bass Management: Supported
Plug-In Scenes: Supported
Included Software: UAD Essentials+ Bundle
UAD Plug-In Library Access: Over 200 Available UAD Plug-Ins
Converter Technology: Elite-Class Gen 2 AD/DA Conversion
Connectivity: Thunderbolt 3 via USB-C
Sample Rates: Up to 192 kHz
Bit Depth: 24-Bit
Built-In DSP: Quad-Core SHARC Processing
Compatible DAWs: LUNA, Pro Tools, Logic Pro, Cubase, Ableton Live
Operating System Compatibility: macOS and Windows
Power Supply: External 12V DC Power Adapter
Hybrid Workflow: DSP and Native Processing Integration
Product Weight: 6 lbs.
Product Dimensions (L x W x H): 8 " x 5 " x 3 "
Financing Options
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Get the gear you need now and pay over time. Perfect for working DJs, artists, and sound pros who need pro-grade speakers, lighting, and cases to stay competitive.
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Military & First Responder Discounts
We're proud to support those who serve. Active-duty military, veterans, and first responders qualify for a special discount on your gear. See our Military Discount details here and how to redeem.





