Universal Audio

Universal Audio APX8 Apollo X8 Thunderbolt 3 Interface

4.2 (27 reviews)
Thunderbolt 3Thunderbolt 1

The Universal Audio Apollo X8 delivers elite-class conversion and HEXA Core UAD processing for studios that demand uncompromising audio quality.

$2,799.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Universal Audio Apollo X8 is an 18 x 24 Thunderbolt 3 audio interface designed for professional music production studios that require the highest standard of audio conversion and onboard processing. At its foundation is elite-class 24-bit/192 kHz A/D and D/A conversion that captures and reproduces audio with exceptional clarity and dynamic range. The built-in HEXA Core UAD processing engine allows producers and engineers to track through UAD plug-in emulations — including models of classic analog compressors, EQs, tape machines, and reverbs — at near-zero latency, regardless of the DAW's audio buffer size. This means performers hear a fully produced monitor mix while recording, without the latency that typically accompanies plug-in processing.

The Apollo X8 features 4 Unison-enabled mic/line preamps that go beyond conventional digital modeling. Unison technology dynamically adjusts the preamp's analog impedance and gain staging to match the behavior of emulated hardware from Neve, API, Manley, SSL, and other iconic brands, delivering an authenticity that starts at the hardware level. The interface supports selectable +24 dBu operation for compatibility with professional mixing consoles and tape machines, and includes a surround monitor controller supporting formats up to 7.1. Front panel controls provide quick access to Alt Speakers, a built-in Talkback mic, and assignable Dim or Mono functions. The Apollo X8 ships with LUNA, Universal Audio's recording application with deep Apollo integration, as well as the Realtime Analog Classics Plus plug-in bundle, and integrates seamlessly with Pro Tools, Logic, Cubase, Ableton, and other major DAWs via Thunderbolt 3 (backwards compatible with Thunderbolt 1 and 2 on Mac).

Key Features

18 x 24 Thunderbolt 3 audio interface with class-leading 24-bit/192 KHz conversion

Realtime UAD HEXA Core Processing for tracking through UAD plug-ins at near-zero latency regardless of audio buffer size

4 Unison-enabled mic/line preamps, giving you fully authentic preamp emulations from Neve, API, Manley, SSL, and more

Includes LUNA, UA’s groundbreaking recording application with deep Apollo integration (Mac/Thunderbolt)

Onboard processing for additional mixing horsepower with Pro Tools, Logic, Cubase, Ableton, and other major DAWs

Includes the "Realtime Analog Classics Plus" plug-in bundle. Other UAD plug-ins sold separately

Surround monitor controller up to 7.1 format

Selectable +24 dBu operation for easy compatibility with professional mixing consoles and tape machines

Convenient front panel monitoring functions including Alt Speakers, Talkback mic, and assignable Dim or Mono

Thunderbolt 3 connectivity, backwards compatible with Thunderbolt 1 & 2 on Mac

Specifications

Brand
Universal Audio
Model
APX8 (Apollo X8)
Type
Thunderbolt 3 Audio Interface
I/O
18 x 24
Conversion
24-bit / 192 kHz
Preamps
4 Unison-Enabled Mic/Line Preamps
Processing
UAD HEXA Core
Connectivity
Thunderbolt 3 (backwards compatible with Thunderbolt 1 & 2 on Mac)
Surround Monitoring
Up to 7.1
Line Output Level
Selectable +24 dBu
Front Panel Controls
Alt Speakers, Talkback Mic, Dim/Mono
Included Software
LUNA Recording System
Included Plug-ins
Realtime Analog Classics Plus bundle

Pros & Cons

👍 Pros

  • Elite-class 24-bit/192 kHz A/D and D/A conversion delivers audiophile-grade sound quality
  • HEXA Core UAD processing enables tracking through UAD plug-ins at near-zero latency regardless of buffer size
  • 4 Unison-enabled preamps provide hardware-level emulations of classic Neve, API, SSL, and Manley preamps
  • 18 x 24 I/O configuration with surround monitoring up to 7.1 handles complex studio routing needs
  • Front panel monitoring controls including Alt Speakers, Talkback mic, and assignable Dim/Mono streamline studio workflow

👎 Cons

  • Premium price point places it firmly in the professional studio investment category
  • Requires Thunderbolt connectivity — not compatible with USB-only computer setups
  • UAD plug-in processing is tied to the onboard DSP, and additional plug-ins beyond the included bundle must be purchased separately
  • The interface's full feature set and routing capabilities involve a learning curve for users new to Apollo systems

Frequently Asked Questions

The Apollo X8 has 4 Unison-enabled mic/line preamps. Unison technology adjusts the preamp's analog impedance and gain staging to authentically emulate classic preamps from Neve, API, Manley, SSL, and others — the emulation happens at the hardware level, not just in software.
Yes, while the Apollo X8 uses Thunderbolt 3 connectivity, it is backwards compatible with Thunderbolt 1 and 2 on Mac using the appropriate Apple adapter.
Yes, the Apollo X8 provides onboard UAD processing that works with Pro Tools, Logic, Cubase, Ableton, and other major DAWs. LUNA is included but not required.
The Apollo X8 comes with the "Realtime Analog Classics Plus" plug-in bundle. Additional UAD plug-ins are available for separate purchase.
Yes, the Apollo X8 includes a surround monitor controller supporting formats up to 7.1.