Desktop 12x18 Thunderbolt audio interface with four Unison mic preamps, elite-class Apollo X Gen 2 audio conversion, Auto-Gain, Apollo Monitor Correction, Bass Management, QUAD core DSP plug-in processing, and premium software suite for Mac or Windows.Create with the world's most powerful desktop audio interface.Record and mix larger sessions and hear every detail with the next generation of UA's Apollo x4 interfaces, featuring highest-resolution audio conversion, four Unison mic preamps, and QUAD Core DSP processing letting you record in realtime through UAD plug-ins from Auto-Tune, Neve, Manley, Avalon, SSL, and hundreds more.Trusted by top artists and producers the world over, Apollo x4 levels up your productions with timeless sound and legendary UA craftsmanship, built to inspire your next collaboration. Hear next generation audio conversion with the widest dynamic range and lowest distortion of any Apollo Experience analog tones with Unison preamps, letting you record in realtime through authentic emulations of Neve, API, Avalon, Manley, Fender, and more Access the full library of 200+ Apollo DSP and UAD Native plug-ins, including award-winning titles like Capitol Chambers, UAD Sound City Studios, EL8 Distressor, and more Mix with confidence in any room or through headphones using Apollo Monitor Correction powered by Sonarworks Use Auto-Gain to set your levels across multiple inputs in seconds and never miss the take Hear all the low-end detail in your mixes using bass management to add a subwoofer to your monitor setup Quickly set up low-latency cues, plug-in scenes, and immersive audio monitoring with the UAD Console app Get included software worth thousands with either UAD Analog Classics. Plus enjoy special upgrade pricing on even more UAD plug-ins with your purchaseGet the Most Powerful Desktop Apollo EverUniversal Audio built Apollo x4 to expand on the gold-standard Apollo Twin, the interface that single-handedly revolutionized home and project studio recording. With its expanded I/O count, unprecedented dynamic range, and elite-class 24-bit / 192 kHz audio conversion - now with enhanced monitoring - Apollo x4 puts the sound of the stars in reach for project studios and collaborators.Record Through Iconic PreampsWith four Unison preamps and dual front panel Hi-Z instrument inputs, Apollo x4 lets you track in realtime through preamp and channel strip plug-ins from Neve, Manley, API, and dozens more, giving you the same rich analog textures used on the greatest recordings of our time.Unlock Authentic Analog SoundsRight out of the box, Apollo x4 gives you the plug-ins used by the world's best engineers. Along with included Teletronix LA-2A and 1176 compressors, UA 610, Century, and LA-6176 tube channel strips, plus UAD guitar amps like Showtime '64 and Lion '68 - you can tap into the entire UAD library of over 200 titles to unlock proven hit-making sounds.Hear the Details Like Never BeforeNow in its Gen 2 design, Apollo x4 features UA's highest-resolution D/A converters ever paired with Apollo Monitor Correction powered by Sonarworks. This means that when you playback your audio through monitors or headphones, you'll not only hear the most pristine representation of your recordings, there will be no surprises when you listen to your final mix or master.Find Your Flow in the UAD Console AppJust like an analog studio, where a console is the heart of the workflow, Apollo x4 has a powerful digital mixing engine where you control plug-in routing and monitoring. And with the latest features like Auto-Gain, Bass Management and Plug-In Scenes, it's easy to find a flow that fits your needs.A Hybrid System, Made for Your MissionCombine Apollo x4's QUAD Core DSP with native processing from your host computer to produce large sessions with complex plug-in chains - a powerhouse hybrid workflow that outpaces any native-only recording setup.Expand Your Studio as You GrowBuild your studio by linking up to four Thunderbolt Apollo interfaces with up to 128 channels of premium I/O to your DAW, and control it all from your desktop using Apollo x4. So no matter how far your music takes you, an Apollo will always be in reach.Included Plug-Ins in UAD Analog ClassicsChannel Strips & Preamps (6) Century Tube Channel Strip CS-1 Channel Strip LA-6176 Signature Channel Strip Precision Channel Strip UA 610-A Preamp & EQ UA 610-B Preamp & EQCompressors / Limiters (7) Fairchild 670 Legacy Compressor Teletronix LA-2A Legacy Leveling Amplifier Teletronix LA-2A Tube Compressor Precision Buss Compressor UA 1176 FET Compressor UA 1176LN Legacy UA 1176SE LegacyEqualizers (3) Precision Equalizer Pultec EQP-1A Legacy EQ Pultec Pro Legacy EQSpecial Processing (5) Oxide Tape Recorder Precision De-Esser Precision Enhancer Hz Precision Enhancer kHz Vibe Analog Machines EssentialsInstruments (1) PolyMAX Polyphonic SynthDelay & Modulation (3) Galaxy Tape Echo Precision Delay Mod Precision Delay Mod LReverbs & Rooms (2) Precision Reflection Engine Pure Plate ReverbMastering (3) Precision Limiter Precision Maximizer Precision MultibandGuitar & Bass (5) Bermuda Triangle Raw Distortion TS Overdrive Pedal UAD Lion '68 Super Lead Amp UAD Showtime '64 Tube Amp