Universal Audio Apollo x4 Gen 2 – Analog Classics is a desktop 12-in / 18-out Thunderbolt 3 audio interface designed for musicians, producers and recording engineers who need flexible connectivity and real-time UAD processing. Featuring four Unison-enabled microphone preamps, two front-panel instrument inputs and onboard QUAD Core DSP, it allows multiple performers to record through compatible preamp, compressor and amplifier emulations with near-zero latency. Gen 2 audio conversion, dual headphone outputs, optical digital expansion and integrated monitor control make the Apollo x4 a versatile centrepiece for collaborative recording and production. The included UAD Analog Classics bundle provides a broad selection of sounds and processing tools for recording, mixing and songwriting.

Key features

• 12-in / 18-out Thunderbolt 3 audio interface
• Gen 2 audio conversion at up to 24-bit / 192 kHz
• 4 Unison-enabled microphone preamps
• 4 rear-panel XLR/TRS microphone and line inputs
• 2 front-panel Hi-Z inputs for guitars or basses
• QUAD Core DSP for real-time UAD plug-in processing
• Optical digital input and output supporting ADAT or S/PDIF
• Balanced stereo monitor outputs and 4 additional line outputs
• 2 stereo headphone outputs with independent level controls
• Built-in talkback microphone and alternate speaker switching
• Auto-Gain, Plug-In Scenes and flexible routing through UAD Console
• Apollo Monitor Correction support powered by Sonarworks
• UAD Analog Classics software bundle included

Overview

Included Content

• Universal Audio Apollo x4 Gen 2 audio interface
• External power supply
• UAD Analog Classics plug-in bundle, available through registration
• UAD Console and supporting software available to download
• Included software highlights: UA 610-A and 610-B Preamp & EQ, LA-6176 Signature Channel Strip, Teletronix LA-2A Tube Compressor and UA 1176 FET Compressor
• Additional software highlights: Oxide Tape Recorder, Galaxy Tape Echo, Pure Plate Reverb and PolyMAX Polyphonic Synth

Creative Tools

• Record up to four analogue sources simultaneously through the microphone/line inputs, making the Apollo x4 suitable for vocal ensembles, acoustic sessions, stereo instruments and collaborative songwriting.
• Use compatible Unison preamp plug-ins to shape input impedance, gain behaviour and tonal character, bringing the response of modelled analogue equipment into the recording process.
• Connect two guitars or basses directly to the front-panel Hi-Z inputs and develop separate recording tones with compatible amplifier and pedal emulations.
• Build real-time recording and monitoring chains using four onboard DSP cores. Available processing capacity depends on the selected UAD plug-ins and sample rate.
• Create separate headphone mixes through UAD Console and use the two headphone outputs to support sessions with a producer and performer or two musicians.
• Use Auto-Gain to help establish recording levels and recall Plug-In Scenes when switching between performers, instruments or recording tasks.
• Expand the studio through optical ADAT connections, adding compatible microphone preamps, converters or digital equipment as recording requirements grow.
• Compare mixes through alternate speakers and communicate with performers using the built-in talkback microphone.
• Refine monitor or headphone playback with Apollo Monitor Correction when paired with the required Sonarworks SoundID Reference software and compatible calibration equipment.
• Shape recordings with the Analog Classics bundle, combining tube preamp colour, compression and equalisation with tape character, echo and plate reverb.

Ideal For

• Music producers
• Recording and mixing engineers
• Songwriters and collaborating musicians
• Vocal and acoustic recording sessions
• Guitarists and bassists
• Home and project studios
• Studios requiring optical digital expansion
• Anyone seeking a desktop Apollo interface with four Unison preamps, dual headphone outputs and QUAD Core DSP