The Apollo x4 allows musicians and producers to easily track, overdub, and mix larger projects with elite-class A/D and D/A conversion, four Unison-enabled preamps, and QUAD Core realtime UAD plug-in processing - all in a desktop Thunderbolt 3 audio interface for Mac and Windows.

Built upon UA's 60-year heritage of audio craftsmanship, Apollo x4 confidently outperforms everything in its class, with 127 dB D/A dynamic range and an included bundle of UAD analog emulation plug-ins, giving you a fully-stocked analog studio, right on your desktop.

Four Unison Preamps: Get the Genuine Sound of Neve, Helios, API & More
Apollo x4 features four Unison-enabled mic preamps, letting you track through exacting mic preamp emulations from Neve, Helios, API, Manley, Universal Audio and many more. Exclusive to UA Audio Interfaces, Unison technology nails the tone of these sought-after tube and solid state mic pres - including their input impedance, gain stage "sweet spots," and the component-level circuit behaviors of the original hardware.

The secret to Unison is its hardware-software integration between Apollo's mic preamps and its onboard UAD QUAD Core DSP Acceleration. Simply place a Unison preamp plug-in on your mic input in Apollo Console software, and it physically reconfigures the Apollo interface's impedance - so you can tap into the classic sounds of the world's most recorded mic preamps.

Realtime Analog Classics Plus Bundle
With the Realtime Analog Classics Plus plug-in bundle, you not only get legendary compressors such as the Fairchild 670 and EQs like the Pultec EQP-1A, but also stunning guitar and bass amp emulations from Softube, and UA's landmark 610-B Tube Preamp and EQ plug-in.

UA 610B Marshall Plexi Classic Amplifier Fairchild 670 Legacy Teletronix LA2A Legacy UA 1176LN Legacy UA 1176SE Legacy Pultec EQP1A Legacy Pultec Pro Legacy Ampeg SVT-VR Classic Bass Amp Precision Channel Strip Precision Reflection Engine Precision Delay Modulation Precision Delay Modulation L UA Precision Enhancer Hz Raw Distortion RealVerbPro

Desktop 12 x 18 Thunderbolt 3 audio interface for Mac and Windows with elite A/D and D/A conversion inherited directly from the acclaimed Apollo X rackmount interfaces

4 Unison mic preamps offer stunning models of classic tube and transformer-based mic preamps and guitar amps

UAD-2 QUAD Core Processing for tracking through vintage compressors, EQs, tape machines, mic preamps, and guitar amp plug-ins with near-zero latency

2 Unison-enabled Hi-Z instrument inputs

2 independent headphone outputs

Built-in Talkback mic for communication with studio talent and recording slate cues

Includes monitor remote functions and Mono, Mute, DIM, and ALT monitor controls

Up to 8 channels of additional digital input via Optical ADAT/SPDIF input

Optical ADAT/SPDIF output for connecting to additional studio equipment

Includes the "Realtime Analog Classics Plus" UAD plug-in bundle featuring the Teletronix LA-2A 1176, and Fairchild 670 compressors, Pultec EQs, UA 610-B Tube Preamp & EQ, and more. Other UAD plug-ins sold separately.

Runs UAD Powered Plug-Ins via VST, RTAS, and AAX 64 in all major DAWs

Uncompromising analog design, superior components, and premium build quality

Free, industry-leading technical support - on the phone and online - from knowledgeable audio engineers

ALL:

Thunderbolt 3 cable (not included)

Internet connection to download software and authorize UAD plug-ins

6 gigabytes available storage

Quad Core i7 or better processor recommended

For additional compatibility information, visit help.uaudio.com

MAC:

Available Thunderbolt 1, 2, or 3 port

Thunderbolt 1 and 2 connections require an Apple Thunderbolt 3 to Thunderbolt 2 Adapter (not included)

macOS 10.12 Sierra, 10.13 High Sierra, or 10.14 Mojave

PC:

Available Thunderbolt 3 port

Windows 10 (64-Bit Edition)