Universal Audio Apollo X4 Gen2 Analog Classics Pro
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- This item is covered for 3 years
What you need to know
What you need to know
- 4 Unison preamps and UAD-2 Quad DSP for real-time recording and mixing with near-zero latency.
- High-end 24-bit / 192 kHz converters offering a 127 dB dynamic range for exemplary monitoring accuracy.
- Advanced monitoring with Auto-Gain, bass management, plug-in scenes and dedicated Mono/Mute/DIM/ALT controls.
- Comprehensive desktop format: 4 mic/line inputs, 2 front-panel Hi-Z inputs, ADAT/SPDIF optical I/O, 4 line outputs, 2 Monitor outputs and 2 headphone outputs.
Manufacturer Information
Universal Audio
https://www.uaudio.com
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From the Apollo Twin to the Apollo x4: Desktop Power Takes a Step Up
A direct evolution of the iconic Apollo Twin, the Apollo x4 takes the desktop interface concept further with more inputs/outputs, two additional preamps, and enhanced monitoring features. Its latest-generation 24-bit / 192 kHz A/D and D/A conversion and the Apollo Monitor Correction function powered by Sonarworks technology provide ultra-reliable monitoring, whether through speakers or headphones.Who is it for and what is it used for?
Designed for demanding home studios as well as small professional facilities, the Apollo x4 excels at multi-source recording (vocals, guitars, synths) and hybrid mixing. Its four preamps and two front-panel Hi-Z inputs simplify sessions with singers and instrumentalists, while ADAT makes it quick and easy to expand the number of inputs for drums or a live setup.Technical specifications
| Compatibility | PC, Mac | Max resolution | 24-bits |
| Sampling frequency | 192 kHz | Headphone outputs | Yes |
| Dynamic range | 127 dB | Dimensions (W x H x D) | 233 x 151 x 66 mm |
| Included | Studio+ plug-in bundle | Weight | 1.46 kg |
Questions frequently asked
Does the Apollo x4 Gen2 work on Mac and PC?
Compatibility is announced with both Mac and PC computers. The audio conversion can reach 24-bit / 192 kHz.
How many preamps and instrument inputs are available?
Four Unison preamps are built-in, with two Hi-Z inputs located on the front panel. This setup allows recording vocals, guitars, and synths within the same session.
Can the number of inputs be increased to record a drum kit?
Expansion via ADAT allows adding inputs for a drum or live setup.
Which plug-ins are included with the Apollo x4 Gen2 Analog Classics Pro?
The Studio+ bundle is included and notably contains Teletronix LA-2A compressors, Pultec equalizers, as well as Marshall and Ampeg amp emulations. The UAD-2 Quad DSP processes these effects to offload the computer's processor. Direct monitoring can thus incorporate UAD processing.
Is Sonarworks correction available on this interface?
The Apollo Monitor Correction feature, powered by Sonarworks, is designed to correct speaker or headphone monitoring. The converters feature a dynamic range of 127 dB.



