Universal Audio Apollo x8 Gen 2 Thunderbolt 3 Audio Interface with Studio+ Plug-Ins

SKU: UAPX8G2STU MFR: APX8G2-STU
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Key Features

  • Experience pristine audio quality with the Apollo x8's premium A/D and D/A converters.
  • Harness powerful UAD plug-ins for real-time audio processing and shaping your sound.
  • Enjoy ultra-low latency performance for seamless recording and monitoring via Thunderbolt 3.
  • Expand your studio with versatile connectivity, including ADAT, S/PDIF, and word clock I/O.
  • Record drums, vocals, and instruments using the four Unison mic preamps for accurate sound.
  • Create professional mixes with confidence, utilizing the interface's dynamic range.
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Special Offers

  • Get a FREE Sphere Modeling Microphone valued at up to $1,500 when you buy . Offer ends 12/31/2025 See details.

  • Buy any Apollo X Gen 2 rackmount interface and get over $2,100 in UAD plug-ins FREE! Including ... Offer ends 09/30/2025 See details.

Special Order?Estimated to Ship: 08/16/2025
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Universal Audio Apollo x8 Gen 2 Specifications

System
  • Simultaneous Channel I/O Count

    18 x 24 (analog + digital)

  • Microphone Inputs

    Four

  • High Impedance (Hi-Z) Instrument Inputs

    Two

  • Analog Line Inputs

    Eight

  • Analog Line Outputs (DC coupled)

    Eight (ten including Monitor outputs)

  • Analog Monitor Outputs (DC coupled)

    Two (one stereo pair)

  • Headphone Outputs

    Two stereo

  • Digital Audio Ports

    ADAT: Two inputs, two outputs
    S/PDIF: One input, one output

  • Thunderbolt 3 Ports

    Two

  • Word Clock

    One input, one output

  • Simultaneous A/D conversion

    Eight channels

  • Simultaneous D/A conversion

    14 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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  • Microphone Inputs 1 - 4

    Frequency Response: 20 Hz - 20 kHz, +/-0.07 dB
    Dynamic Range: 123 dB (A-weighted)
    THD + Noise (1 kHz @ 25 dBu, -1 dBFS): -115 dB (0.00018%)
    Maximum Input Level (PAD on): 26 dBu
    Default Input Impedance (variable via Unison plug-ins): 5.4 K Ohm
    Gain Range: +10 dB to +65 dB
    Pad Attenuation (per mic input): 20 dB (variable via Unison plug-ins)
    Phantom Power (per mic input): +48V
    Connector Type: XLR Female, pin 2 positive

  • Hi-Z Inputs 1 & 2

    (600 K Ohm input termination)
    Frequency Response: 20 Hz - 20 kHz, +/-0.08 dB
    Dynamic Range: 122 dB (A-weighted)
    THD + Noise (1 kHz @ 9.6 dBu, -1 dBFS): -111 dB (0.00028%)
    Maximum Input Level (at minimum gain): 12.6 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 - 8

    Frequency Response: 20 Hz - 20 kHz, +/-0.07 dB
    Dynamic Range: 124 dB (A-weighted)
    THD + Noise (1 kHz @ 23 dBu, -1 dBFS): -116 dB (0.00016%)
    Maximum Input Level (reference level @ +4 dBu): 24 dBu
    Input Impedance: 10 K Ohm
    Gain Range (inputs 1 - 4 only): +10 dB to +65 dB
    Connector Type: 1/4" female TRS balanced

  • Line Outputs 1 - 8

    Frequency Response: 20 Hz - 20 kHz, +/-0.05 dB
    Dynamic Range: 127 dB (A-weighted)
    THD + Noise (1 kHz @ 23 dBu, -1 dBFS): -119 dB (0.00011%)
    Maximum Output Level: Reference level @ +4 dBu: 24 dBu
    Maximum Output Level: Reference level @ -10 dBV: 12.2 dBu
    Output Impedance: 100 Ohm
    Connector Type: 1/4" female TRS balanced

  • Monitor Outputs L & R

    Frequency Response: 20 Hz - 20 kHz, +/-0.02 dB
    Dynamic Range: 130 dB (A-weighted)
    THD + Noise (1 kHz @ 23 dBu, -1 dBFS): -127 dB (0.000045%)
    Maximum Output Level: Reference level @ +4 dBu: 24 dBu
    Maximum Output Level: Reference level @ -10 dBV: 12.2 dBu
    Output Impedance: 100 Ohm
    Connector Type: 1/4" female TRS balanced

  • Stereo Headphone Outputs 1&2

    Frequency Response: 20 Hz - 20 kHz, +/-0.02 dB
    Dynamic Range: 126 dB (A-weighted)
    THD + Noise: 300 Ohm load (1 kHz @ 16.8 dBu, -1 dBFS): -117 dB (0.00014%)
    THD + Noise: 600 Ohm load (1 kHz @ 17.3 dBu, -1 dBFS): -118 dB (0.00013%)
    Maximum Output Level: 300 Ohm load (1 kHz @ 16.8 dBu, -1 dBFS): 17.8 dBu
    Maximum Output Level: 600 Ohm load (1 kHz @ 17.3 dBu, -1 dBFS): 18.3 dBu

  • Stereo Headphone Outputs 1&2 (Contd.)

    Maximum Output Power (RMS): 300 Ohm load (1 kHz @ 16.8 dBu, -1 dBFS): 120 mW
    Maximum Output Power (RMS): 600 Ohm load (1 kHz @ 17.3 dBu, -1 dBFS): 67 mW
    Connector Type: 1/4" female TRS stereo

Digital I/O

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  • Digital Audio Ports

    ADAT: Two inputs, two outputs
    S/PDIF: One input, one output

  • S/PDIF Channels

    One stereo input, one stereo output

  • ADAT Channels

    Up to eight input & eight output channels

  • Connector Type

    Female Phono (RCA)
    ADAT: Optical TOSLINK JIS F05
    World Clock: BNC

  • Format

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

  • Supported Sample Rates

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

  • Channel Assignments @ 44.1 kHz, 48 kHz

    Port 1 = Channels 1 - 8, Port 2 = 1 - 8 (mirrored)

  • Channel Assignments @ 88.2 kHz, 96 kHz

    Port 1 = Channels 1 - 4, Port 2 = Channels 5 - 8

  • Channel Assignments @ 176.4 kHz, 192 kHz

    Port 1 = Channels 1 - 2, Port 2 = Channels 3 - 4

  • Lock Range

    +/-4% of any supported sample rate

  • Word Clock Input Termination

    75 Ohm, switchable

  • Synchronization Sources

    Internal, Word Clock, ADAT, S/PDIF

Electrical

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  • Power Supply

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

  • AC Input Connector Type

    IEC male

  • AC Requirements

    100V - 240V AC, 47 - 63 Hz, 1.6 A max

  • DC Connector Type

    XLR 4-pin locking male (Neutrik P/N NC4MDM3-H)

  • DC Requirements

    12 VDC, 6 A

Environmental

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  • Maximum Power Consumption

    72 Watts (30 W typical)

Physical

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  • Dimensions (W x H x D)

    Chassis Only: 19 x 1.74 x 12" (482.6 x 44.2 x 305mm)
    Including Knob & Jack Protrusions: 19 x 1.74 x 13.5" (482.6 x 44.2 x 343.1mm)

  • Weight

    8.8 lbs (3.95kg)

About Universal Audio Apollo x8 Gen 2

From the heart of your studio to the forefront of audio innovation, the Apollo x8 Gen 2 Thunderbolt 3 Audio Interface with Studio+ Plug-Ins is engineered for creators and producers who demand the highest quality in sound production. This advanced audio interface is designed for handling larger projects with ease, offering unparalleled audio conversion and four Unison mic preamps. With real-time UAD processing, you can record through industry-leading plug-ins from Auto-Tune, Neve, API, Manley, and more, all without latency, ensuring that the legendary UA sound and craftsmanship are seamlessly integrated into your workflow.

The Apollo x8 is equipped with elite-class Apollo X Gen 2 converters, delivering an unprecedented dynamic range that allows you to hear every nuance of your music. The four Unison preamps provide the authentic sound of iconic analog gear from renowned brands like Neve, API, Manley, and Fender. This is achieved through impedance-matched analog modeling, which digitally controls mic preamp impedance and gain staging, recreating the sound and feel of classic analog equipment.

Experience studio-grade D/A conversion with a remarkable -127 dB THD+N, ensuring ultra-low noise and distortion at just 0.000045% THD+N. The enhanced Monitor D/A offers the widest dynamic range of any Apollo interface to date, while the professional headphone monitoring system delivers clean, powerful amplification with 126 dB DNR and -117 dB (0.00014%) THD+N into 300 Ohm.

The Apollo x8 is a powerhouse for both professional and project studios, providing the highest-quality audio with its elite-class conversion and enhanced D/A monitoring. Record through four Unison preamps in real-time, capturing the rich analog textures used in the greatest recordings of our time. The Gen 2 design features our highest-resolution D/A converters, paired with Apollo Monitor Correction by Sonarworks, ensuring the most accurate representation of your recordings when mixing through monitors or headphones.

With the Apollo x8, you have access to a comprehensive library of over 200 UAD plug-ins, including Teletronix LA-2A compressors, Pultec EQs, and amps from Fender, Marshall, and Ampeg, enabling you to mix with authentic analog sounds. The digital mixing engine allows for seamless plug-in routing and monitoring, with features like Auto-Gain, Bass Management, 7.1 Surround Sound, and Plug-In Scenes to tailor your workflow to your needs.

The hybrid system combines Apollo x8's HEXA Core DSP with native processing from your host computer, allowing you to produce large sessions with complex plug-in chains, surpassing any native-only recording setup. Expand your studio capabilities by linking up to four Thunderbolt Apollo interfaces for up to 128 channels of premium I/O in your DAW, all controlled from your desktop using Apollo Twin or x4.

Included with the Studio+ Edition are a variety of plug-ins across multiple categories, such as Channel Strips & Preamps, Compressors/Limiters, Equalizers, Special Processing, Essentials Instruments, Delay & Modulation, Reverbs & Rooms, and Guitar & Bass. These plug-ins provide an extensive range of tools to enhance your music production, making the Apollo x8 Gen 2 Thunderbolt 3 Audio Interface an indispensable addition to any studio setup.

Universal Audio Apollo x8 Gen 2 Features

  • 18 x 24 Thunderbolt 3 audio interface with HEXA Core DSP plug-in processing
  • Four Unison mic preamps, two Hi-Z instrument inputs, eight 1/4" line inputs, two optical Toslink I/O (ADAT S/MUX), RCA coaxial I/O (S/PDIF), word clock I/O (BNC)
  • Two 1/4" monitor outs, eight 1/4" line outs (ALT / 7.1 surround), two 1/4" TRS headphone outs
  • Elite-class Apollo X Gen 2 converters with 24-bit / 192 kHz resolution featuring Dual-Crystal Clocking for ultra-low jitter at all sample rates
  • Enhanced D/A for critical monitoring and playback with 130 dB dynamic range and astonishingly low THD of -127 dB
  • 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 50+ UAD plug-ins with Studio+ Editions
  • Compatible with LUNA, Logic Pro, Pro Tools, Cubase, Ableton Live, and more
  • Expandable with Thunderbolt Apollo interfaces and Dante via Apollo x16D
  • 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 x8's premium A/D and D/A converters.
  • Harness powerful UAD plug-ins for real-time audio processing and shaping your sound.
  • Enjoy ultra-low latency performance for seamless recording and monitoring via Thunderbolt 3.
  • Expand your studio with versatile connectivity, including ADAT, S/PDIF, and word clock I/O.
  • Record drums, vocals, and instruments using the four Unison mic preamps for accurate sound.
  • Create professional mixes with confidence, utilizing the interface's dynamic range.

What's in the box:

  • Universal Audio Apollo x8 Gen 2 Thunderbolt 3 Audio Interface
  • Studio+ Plug-Ins
  • External Power Supply
  • AC Power Cable (IEC C7/Non-Polarized)
  • Universal Audio 1 Year Limited Warranty