Universal Audio Apollo x4 Gen 2 Thunderbolt 3 Audio Interface with Essentials+ Plug-Ins

SKU: UAPX4G2ESS MFR: APX4G2-ESS
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Key Features

  • Experience pristine audio quality with the Apollo x4's elite A/D and D/A conversion.
  • Record vocals and instruments with Unison mic preamps, capturing authentic tube & transformer sounds.
  • Harness near-zero latency for real-time UAD plug-in processing during recording sessions.
  • Expand your studio setup via ADAT/SPDIF for more input/output connectivity options.
  • Enjoy seamless software compatibility with major DAWs for effortless music production.
  • Crafted with robust build quality, this Thunderbolt 3 audio interface ensures lasting reliability.
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Universal Audio Apollo x4 Gen 2 Specifications

System
  • Simultaneous Channel I/O Count

    12 x 18 (ADAT mode) (analog + digital)

  • Microphone Inputs

    Four

  • High Impedance (Hi-Z) Instrument Inputs

    Two

  • Analog Line Inputs

    Four

  • Analog Line Outputs (DC coupled)

    Four (six including Monitor outputs)

  • Analog Monitor Outputs (DC coupled)

    Two (one stereo pair)

  • Headphone Outputs

    Two stereo

  • Digital Audio Ports

    One input, one output (ADAT or S/PDIF, selectable)

  • Thunderbolt 3 Port

    One

  • Simultaneous A/D conversion

    Four channels

  • Simultaneous D/A conversion

    10 channels

  • Supported Sample Rates

    44.1, 48, 88.2, 96, 176.4, 192kHz

  • Bit Depth Per Sample

    24

  • Analog Round-Trip Latency

    1.1 milliseconds @ 96 kHz sample rate
    Through four UAD legacy plug-ins (included) via UAD Console software: 1.1 milliseconds @ 96 kHz sample rate (no additional latency via Realtime UAD Processing)

Analog I/O

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  • Frequency Response

    20 Hz - 20 kHz, +/-0.05 dB

  • Dynamic Range

    123 dB (A-weighted)

  • THD + Noise (1 kHz @ 24 dBu, -1 dBFS)

    -117 dB (0.00014%)

  • Maximum Input Level (PAD on)

    25 dBu

  • Default Input Impedance

    5.4 K Ohm (variable via Unison plug-ins)

  • Gain Range

    +10 dB to +65 dB

  • Pad Attenuation

    20 dB (variable via Unison plug-ins) (switchable per mic input)

  • Phantom Power

    +48V (switchable per mic input)

  • Connector Type

    XLR female, pin 2 positive (combo XLR/TRS)

  • Hi-Z Inputs 1 & 2

    (600 K Ohm input termination)
    Frequency Response: 20 Hz - 20 kHz, +/-0.05 dB
    Dynamic Range: 122 dB (A-weighted)
    THD + Noise (1 kHz @ 11.4 dBu, -1 dBFS): -111 dB (0.00028%)
    Maximum Input Level (at minimum gain): 12.4 dBu
    Default Input Impedance (variable via Unison plug-ins): 1 M Ohm
    Gain Range: +10 dB to +65 dB
    Connector Type: 1/4" female TS unbalanced

  • Line Inputs 1 - 4

    Frequency Response: 20 Hz - 20 kHz, +/-0.05 dB
    Dynamic Range: 124 dB (A-weighted)
    THD + Noise (1 kHz @ 19.2 dBu, -1 dBFS): -115 dB (0.00018%)
    Maximum Input Level (reference level @ +4 dBu): 20.2 dBu
    Input Impedance: 10 K Ohm
    Gain Range: +10 dB to +65 dB
    Connector Type: 1/4" female TRS balanced

  • Line Outputs 1 - 4

    Frequency Response: 20 Hz - 20 kHz, +/-0.05 dB
    Dynamic Range: 128 dB (A-weighted)
    THD + Noise (1 kHz @ 19.2 dBu, -1 dBFS): -117 dB (0.00014%)
    Maximum Output Level: Reference level @ +4 dBu: 20.2 dBu
    Maximum Output Level: Reference level @ -10 dBV: 14.5 dBu
    Output Impedance: 100 Ohm
    Connector Type: 1/4" female TRS balanced

  • Monitor Outputs L & R

    Frequency Response: 20 Hz - 20 kHz, +/-0.04 dB
    Dynamic Range: 129 dB (A-weighted)
    THD + Noise (1 kHz @ 19.2 dBu, -1 dBFS): -120 dB (0.0001%)
    Maximum Output Level: 20.2 dBu
    Output Impedance: 100 Ohm
    Connector Type: 1/4" female TRS balanced

  • Stereo Headphone Outputs 1&2

    Frequency Response: 20 Hz - 20 kHz, +/-0.01 dB
    Dynamic Range: 124 dB (A-weighted)
    THD + Noise: 300 Ohm load (1 kHz @ 14.4 dBu, -1 dBFS): -108 dB (0.00040%)
    THD + Noise: 600 Ohm load (1 kHz @ 14.8 dBu, -1 dBFS): -112 dB (0.00025%)

  • Stereo Headphone Outputs 1&2 (Contd.)

    Maximum Output Level: 300 Ohm load (1 kHz @ 14.4 dBu, -1 dBFS): 15.4 dBu
    Maximum Output Level: 600 Ohm load (1 kHz @ 14.8 dBu, -1 dBFS): 15.8 dBu
    Maximum Output Power: 300 Ohm load: 68 mW RMS
    Maximum Output Power: 600 Ohm load: 38 mW RMS
    Connector Type 1/4" female TRS stereo

Digital I/O

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  • Digital Audio Port

    One input, one output (ADAT or S/PDIF, selectable)

  • Connector Type

    Optical TOSLINK JIS F05

  • S/PDIF Channels

    One stereo input, one stereo output

  • ADAT Channels

    Up to eight input & eight output channels

  • Format

    S/PDIF: IEC 958
    ADAT: Lightpipe with S/MUX

  • Supported Sample Rates

    S/PDIF: 44.1, 48, 88.2, 96kHz
    ADAT: 44.1, 48, 88.2, 96, 176.4, 192kHz

  • Channel Assignments @ 44.1 kHz, 48 kHz

    Channels 1 - 8

  • Channel Assignments @ 88.2 kHz, 96 kHz

    Channels 1 - 4

  • Channel Assignments @ 176.4 kHz, 192 kHz

    Channels 1 - 2

  • Internal, ADAT, S/PDIF

    Conditional per selected digital input type

Electrical

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  • Power Supply

    External AC-to-DC power supply, level VI compliant

  • AC Input Connector Type

    IEC C8, non-polarized

  • AC Requirements

    100V - 240V AC, = 50 - 60 Hz, 1.2 A MAX

  • DC Connector Type

    Male barrel plug, 2.1 mm x 5.5 mm, center positive

  • DC Requirements

    12 VDC, +/-5%

  • Maximum Power Consumption

    19 Watts (when portable host computer not charging)

  • Ambient Temperature Range

    32 to 104 Degree F (0 to 40 Degree C)

Physical

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  • Dimensions (W x H x D)

    Chassis Only: 9.17 x 2.51 x 5.87" (232.98 x 65.81 x 149.13mm)
    Including Knob & Jack Protrusions: 9.17 x 2.51 x 6.12" (232.98 x 65.81 x 155.60mm)

  • Weight

    3.2 lbs (1.47kg)

  • UPC Code

    819937004582

About Universal Audio Apollo x4 Gen 2

An exceptional tool for music producers and audio engineers, the Apollo x4 Gen 2 Thunderbolt 3 Audio Interface with Essentials+ Plug-Ins is the world's most powerful desktop audio interface, designed to elevate your recording sessions to professional standards. This advanced interface allows you to produce larger sessions with its superior audio conversion capabilities, featuring four Unison mic preamps and real-time UAD processing. Record through industry-leading plug-ins from renowned brands like Neve, API, Manley, and Auto-Tune, among hundreds of others, to infuse your projects with the legendary UA sound that inspires creativity and collaboration.

The Apollo x4 is equipped with elite-class Apollo X Gen 2 converters, delivering unparalleled dynamic range and audio clarity. With four Unison preamps, you can capture the authentic tone and feel of iconic analog equipment from Neve, API, Manley, Fender, and more, thanks to its impedance-matched analog modeling technology. This ensures that you experience the rich analog textures that have defined countless hit recordings.

Experience ultra-low noise and distortion with the Apollo X Gen 2 converters, boasting a studio-grade D/A conversion with -120 dB THD+N and a dynamic range of 129 dB DNR. The enhanced Monitor D/A provides the widest dynamic range of any Apollo interface to date, ensuring that you hear every detail of your recordings with precision. The professional headphone monitoring system offers clean, powerful amplification with 124 dB DNR and -108 dB (0.0004%) THD+N into 300 Ohm, making it ideal for critical listening.

The Apollo x4 expands on the groundbreaking Apollo Twin, offering more I/O, elite-class 24-bit/192 kHz audio conversion, and the widest dynamic range available. With dual front panel Hi-Z instrument inputs, you can track through emulations of classic gear, giving you the flexibility to achieve the sound of the stars in your home studio.

Mix with confidence using the Apollo Monitor Correction by Sonarworks, which ensures accurate sound reproduction whether you're using monitors or headphones. The included UAD plug-ins, such as LA-2A compressors, Pultec EQs, and amps from Marshall and Ampeg, provide you with the tools used in top-tier recording studios. Access the extensive library of over 200 UAD plug-ins to unlock proven hit-making sounds.

The Apollo x4's powerful mixing engine allows for seamless plug-in routing and monitoring, with features like Auto-Gain, Bass Management, and Plug-In Scenes to streamline your workflow. Its hybrid system combines DSP processing with native processing from your computer, enabling you to handle large sessions with complex plug-in chains effortlessly.

As your studio grows, the Apollo x4 can expand with you. Link up to four Thunderbolt Apollo interfaces for up to 128 channels of premium I/O, all controllable from your desktop. The Essentials+ Plug-Ins package includes a comprehensive selection of channel strips, compressors, equalizers, special processing tools, instruments, delay and modulation effects, reverbs, and guitar and bass amplifiers, ensuring you have everything you need to create professional-quality music.

With the Apollo x4 Gen 2 Thunderbolt 3 Audio Interface, your studio is equipped to handle any project, offering the flexibility and power to bring your musical visions to life.

Universal Audio Apollo x4 Gen 2 Features

  • 12 x 18 Thunderbolt 3 audio interface with QUAD Core DSP plug-in processing
  • Four Unison mic preamps, two Hi-Z instrument inputs, optical Toslink I/O (ADAT or S/PDIF)
  • Two 1/4" monitor outs, four 1/4" line outs (ALT 1 / 2), two 1/4" TRS headphone outs
  • Elite-class Apollo X Gen 2 converters with 24-bit / 192 kHz resolution
  • Enhanced D/A for critical monitoring and playback with 129 dB dynamic range
  • Calibrate your main monitor and headphone outputs with Apollo Monitor Correction powered by Sonarworks
  • Fully-featured monitor controller with alternate speaker switching and integrated talkback for easy communication with talent
  • Updated UAD Console app featuring Auto-Gain, Plug-In Scenes, subwoofer integration with Bass Management, immersive audio support, and more
  • Onboard DSP supports over 200 UAD plug-ins via VST, AU, and AAX 64 formats in all major DAWs
  • Includes up to 20+ UAD plug-ins with Essentials+ Editions
  • Compatible with LUNA, Logic Pro, Pro Tools, Cubase, Ableton Live, and more
  • Expandable with Thunderbolt Apollo interfaces
  • Free industry-leading technical support from knowledgeable audio engineers

Warranty Information

This product has a limited warranty of 12 months for parts and 12 months for labor.

Key Features

  • Experience pristine audio quality with the Apollo x4's elite A/D and D/A conversion.
  • Record vocals and instruments with Unison mic preamps, capturing authentic tube & transformer sounds.
  • Harness near-zero latency for real-time UAD plug-in processing during recording sessions.
  • Expand your studio setup via ADAT/SPDIF for more input/output connectivity options.
  • Enjoy seamless software compatibility with major DAWs for effortless music production.
  • Crafted with robust build quality, this Thunderbolt 3 audio interface ensures lasting reliability.

What's in the box:

  • Universal Audio Apollo x4 Gen 2 Thunderbolt 3 Audio Interface
  • Essentials+ Plug-Ins
  • External Power Supply
  • AC Power Cable (IEC C7/Non-Polarized)
  • Universal Audio 1 Year Limited Warranty