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Universal Audio

Apollo Solo USB Audio Interface

Q&A SKU #L77892000000000

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Give your recordings genuine UA conversion and the benefit of classic mixing tools.

Featuring class-leading Universal Audio conversion, two Unison mic preamps, and a suite of built-in effects, Apollo Solo USB puts album-quality recording on your desktop. This 2 x 4 USB audio interface for Windows also includes a generous collection of UAD plug-ins to record vocals and instruments through, at near-zero latency.

Unison Technology for Stunning Mic and Guitar Preamp Emulations
Apollo Solo USB's Unison technology gives you the tone, touch and “feel” of the world's most sought-after tube and transformer-based mic preamps and guitar amps. It includes the UA 610-B Tube Preamp, Marshall Plexi Classic Amplifier, and Ampeg SVT-VR Classic Bass Amp plug-ins — and can be expanded with exclusive titles from Neve, Avalon, SSL, Fender and more. The secret is a unique hardware-software integration, which adjusts the impedance of Apollo's instrument and mic preamps to match the emulated hardware — for authentic analog sound unmatched by other recording interfaces.

Realtime UAD Plug-In Processing for Recording with Near-Zero Latency
Derived from Universal Audio’s award-winning Apollo interfaces, Apollo Solo USB opens up a range of classic analog color via its Realtime UAD Processing. Featuring an onboard UAD-2 SOLO Core processor, Apollo Solo USB lets you monitor and record through the full library of UAD Powered Plug-Ins — at near-zero latency, regardless of your audio software buffer setting. It’s like having a virtual analog studio that fits in a laptop bag.

The UAD library features more than 100 titles and offers everything from classic Moog filters to Ampex tape to Lexicon reverbs — with more being added every few months.* These are the exact same UAD plug-ins used on hit records by Billie Eilish, Kendrick Lamar, Dr. Dre, Foo Fighters and many more.

Built for Musicians, Electronic Producers and Songwriters
Apollo Solo USB's robust all-metal construction, best-in-class headphone amplifier, and superior audio conversion is perfect for musicians, songwriters, and electronic music producers who need UA quality in a compact package.


  • Desktop 2 x 4 USB audio interface with class-leading 24-bit/192kHz audio conversion
  • Unison mic preamp and guitar amp emulations from Neve, API, Avalon, Manley, Marshall, Fender and more*
  • Realtime UAD Processing allows near-zero latency tracking with classic UAD plug-in effects, regardless of software buffer setting
  • Includes studio compressors, EQs, reverbs, and guitar amp emulations and more as part of “Realtime Analog Classics” bundle
  • Best-in-class headphone amplifier for loud, detailed, low-noise monitoring
  • Apollo Solo USB Includes the “Realtime Analog Classics” UAD Powered Plug-Ins Bundle*
    • UA 610-B Tube Preamp and EQ
    • Marshall Plexi Classic Guitar Amp
    • Ampeg SVT-VR Classic Bass Amp
    • Raw Distortion Guitar Pedal
    • Teletronix LA-2A Compressor Legacy
    • UA 1176LN Compressor Legacy
    • UA 1176SE Compressor Legacy
    • Pultec EQP-1A EQ Legacy
    • Pultec Pro EQ Legacy
    • Precision Delay Modulation
    • Precision Delay Modulation L
    • Precision Reflection Engine
    • Precision Channel Strip
    • Realverb Pro
    • * All other UAD Powered Plug-Ins sold separately. All trademarks are property of their respective owners.

    It may be small, but you'll get big results. Order today.


    Apollo Solo USB Audio Interface Specifications:

    • I/O Complement
    • Microphone Inputs: 2
    • Analog Line Inputs: 2
    • Hi-Z Instrument Inputs: 1
    • Analog Monitor Outputs: 2 (one stereo pair)
    • Headphone Outputs: 1 stereo
    • Thunderbolt 3 Port: 1
    • A/D–D/A Conversion
    • Supported Sample Rates (kHz): 44.1, 48, 88.2, 96, 176.4, 192
    • Bit Depth Per Sample: 24
    • Simultaneous A/D conversion: 2 channels
    • Simultaneous D/A conversion: 4 channels
    • Analog Round-Trip Latency: 1.1 milliseconds @ 96kHz sample rate
    • Analog Round-Trip Latency with up to five serial UAD Powered Plug-Ins via Console application: 1.1 milliseconds @ 96kHz sample rate
    • Frequency Response: 20Hz–20kHz, ±0.1dB
    • Line Inputs: 1 & 2
    • Connector Type: 1/4” Female TRS Balanced (Combo XLR/TRS)
    • Dynamic Range: 118dB (A–weighting)
    • Total Harmonic Distortion + Noise: –107 dBFS
    • Input Impedance: 10kOhms (differential)
    • Gain Range: +10dB to +65dB
    • Maximum Input Level (600 Ohm source): +20.7 dBu
    • Microphone Inputs: 1 & 2
    • Connector Type: XLR Female, pin 2 positive (Combo XLR/TRS)
    • Phantom Power: +48V (switchable per mic input)
    • Dynamic Range: 118 dB (A–weighting)
    • Total Harmonic Distortion + Noise: –108 dBFS
    • Default Input Impedance: 5.5KOhms (variable via Unison plug-ins)
    • Gain Range +10dB to +65dB
    • Pad Attenuation (switchable per input): 20dB (variable via Unison plug-ins)
    • Maximum Input Level: +25.2 dBu (minimum gain, pad engaged)
    • Connector Type: Female 1/4” TS Unbalanced
    • Dynamic Range: 118dB (A–weighting)
    • Total Harmonic Distortion + Noise: –105 dBFS
    • Input Impedance (variable via Unison plug-ins): 1mOhms
    • Gain Range: +10 dB to +65 dB
    • Maximum Input Level (@ minimum gain): +12.5 dBu
    • Outputs: 1 & 2
    • Connector Type: 1/4” Female TRS Balanced
    • Output Impedance: 100 ohms (differential)
    • Dynamic Range: 115 dB (A–weighting)
    • Total Harmonic Distortion + Noise: –106 dBFS
    • Maximum Output Level: +20.7 dBu
    • Operating Reference Level: +14 dBu, +20 dBu (selectable)
    • Power Supply: USB (USB C - External power supply included)
    • Maximum Power Consumption: 10W
    • Weight (bare unit): 1.38 lb. (0.63 Kg)
    • Apollo Solo Thunderbolt 3 Bus Powered Audio Interface
    • Getting Started URL Card
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