The Universal Audio Apollo x4 Gen 2 is a 12 x 18 desktop Thunderbolt 3 audio interface with four Unison mic preamps, two Hi-Z inputs, and QUAD Core DSP for realtime UAD plug-in processing. It brings rack-style I/O count to a desktop chassis with elite-class Apollo X Gen 2 conversion at 24-bit / 192 kHz for Mac and Windows.

Unison Preamps and Monitoring

Four Unison mic preamps and dual front-panel Hi-Z inputs support realtime tracking through modeled classic preamps and amps. QUAD Core DSP runs UAD plug-ins at near-zero latency. Dual headphone outputs, alternate speaker switching, integrated talkback, Auto-Gain, Bass Management, Plug-In Scenes, and Apollo Monitor Correction powered by Sonarworks are controlled from the UAD Console app.

Plug-in Bundle (Studio+)

Studio+ includes 56 UAD plug-ins: everything in Essentials+ (33), plus these additions:

  • Channel strips and preamps: Avalon VT-737sp Channel Strip, Manley Reference Microphone Preamp, V76 Preamplifier
  • Compressors / limiters: dbx 160 Compressor / Limiter, Empirical Labs Distressor, Fairchild 660 Compressor, Fairchild 670 Compressor, Teletronix LA-3A Classic Audio Leveler, UA 1176 Rev A Classic Limiter, UA 1176AE Classic Limiter, UA 1176LN Rev E Classic Limiter, UA 175B Classic Limiter, UA 176 Classic Limiter
  • Special processing: Auto-Tune Realtime Advanced, Auto-Tune Realtime X, Studer A800 Multichannel Tape Recorder
  • Instruments: Electra 88 Vintage Keyboard Studio, Moog Minimoog, Opal Morphing Synth, Ravel Grand Piano, Waterfall B3 Organ
  • Delay and modulation: Brigade Chorus Pedal, Studio D Chorus, Waterfall Rotary Speaker
  • Reverbs and rooms: Lexicon 224 Digital Reverb

Additional UAD plug-ins from the 200+ title library can be purchased separately. Formats: VST, AU, AAX 64.

Specifications

  • Simultaneous I/O: 12 x 18 (analog + digital, ADAT mode)
  • Mic preamps: 4 Unison-enabled, +48V phantom
  • Hi-Z inputs: 2 front-panel 1/4"
  • Monitor outputs: 2 x 1/4"
  • Line / ALT outputs: 4 x 1/4" (ALT 1 / 2)
  • Headphone: 2 x 1/4" TRS
  • Digital I/O: optical TOSLINK I/O (ADAT or S/PDIF selectable)
  • Host: Thunderbolt 3 (Mac / Windows)
  • DSP: QUAD Core (four SHARC processors)
  • Conversion: 24-bit / 44.1-192 kHz; enhanced monitor D/A up to 129 dB dynamic range
  • Analog round-trip latency: 1.1 ms @ 96 kHz
  • Power: external 12 VDC supply (included)
  • Dimensions: 232.98 x 155.60 x 65.81 mm (9.17" x 6.12" x 2.51"), W x D x H including knobs/jacks
  • Weight: 1.47 kg (3.2 lb)

In the Box

  • Apollo x4 Gen 2 audio interface
  • External power supply
  • AC power cable (IEC C7, region-specific)
  • Getting Started URL card

Thunderbolt cable sold separately.

ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • Apollo x4 Gen 2 Thunderbolt Audio Interface
Finish
  • Studio
Categories
Sample Rate
  • 192 khz
Bus-Powered
  • No
Electronics
  • Digital
  • Analog
  • Solid State
Digital Output Format
  • ADAT/Optical
Compatibility
  • macOS
Format
  • Desktop Standalone
Digital Input Format
  • ADAT/Optical
Bit Depth
  • 24-bit
Computer Connectivity
  • Thunderbolt
Number of Mic Preamps
  • 4
Number of Analog Outputs
  • 6
Number of Analog Inputs
  • 4

Product safety information may be available here.

Blackout Audio

Toronto, Canada
Joined Reverb:2023

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