Universal Audio Volt 4 Gen 2 USB 12-in / 6-out Audio Interface

Album-Ready Sound - The Universal Audio Volt 4 Gen 2 USB 12-in / 6-out Audio Interface

Volt 4 is a next-generation mobile USB audio interface with two onboard Tone Shaping Preamps, Smart Display, and expanded inputs, giving music creators the sound of a pro studio with easy, hands-on control. Built by the same team behind the legendary Apollo interfaces, Volt 4 makes recording effortless. Get up and running on Mac, Windows, iPad, or iPhone in minutes. Set vocal, guitar, and stereo instrument levels perfectly with Auto-Gain. Connect to MIDI keyboards and drum machines, and expand your studio over ADAT. When it’s time to mix, you get an award-winning suite of UAD plug-ins and the LUNA Digital Audio Workstation.

• 12-in / 6-out USB audio interface with professional 32-bit / 192 kHz audio conversion
• Two Tone Shaping Preamps with 60 dB gain and three character modes — Warmth, Focus, and Shine — for the sounds of classic analog mic preamps at the source
• Two mic / line inputs with two front-panel Hi-Z instrument inputs, plus additional line I/O for outboard gear
• ADAT or S/PDIF optical input for up to eight channels of digital expansion
• MIDI In and Out for controllers, keyboards, and synths
• Onboard USB hub for connecting peripherals and powering external MIDI controllers
• Full-color Smart Display for bright, at-a-glance visual feedback of inputs, levels, and settings
• Auto-Gain and Clip Protection for perfect recording levels, every time
• Full integration with the UAD Console app and LUNA, including session recall and low-latency cue mixes
• Built-in loopback for podcasting, streaming and content creation
• Independent 48V phantom power per channel for condenser microphones
• USB bus-powered and class-compliant for easy setup with Mac, Windows, iPad, and iPhone*
• Stylish, rugged construction built to withstand years of use

Studio Sound at the Push of a Button

Home recordings and phone demos can sound thin and lifeless. Volt gives your recordings incredible tone right from the start. With three mic preamp modes — Warmth, Focus, and Shine — you can quickly add Tube, Solid State, and British Class-A tone to everything you record.

Hear Every Detail with Best-in-Class 32-Bit Converters

When you capture that perfect take, Volt’s 32-bit / 192 kHz converters preserve every detail, exactly as it happened. And with loud, clear speaker and headphone outputs, you'll get the perfect monitoring levels, from your first take to your final mix.

Expand Your I/O

Bigger ideas need more connections. Volt 4 gives you studio-grade Mic / Line and Hi-Z Instrument inputs, and adds MIDI for your controllers and synths. With clean 48V phantom-powered mic inputs for your favorite studio condensers, and ADAT for adding up to eight more channels, your setup can grow with your sound.

See the Big Picture with Smart Display

Volt 4’s full-color Smart Display shows your inputs, levels, and settings in detail. So you spend less time setting up and more time creating.

Get the Perfect Levels with Auto-Gain

Nothing’s worse than a great take wrecked by digital distortion. Auto-Gain sets your recording levels in seconds, and Clip Protection catches unexpected peaks. So you can focus on the performance instead of the meters.

Turn Anywhere You Go into a Studio

Volt 4 is bus-powered. That means you don’t need a power outlet or external power supply to make music. Or even a studio space. Just plug Volt into your computer, tablet, or phone, pull up a session and get to work.*

Start Making Music in Minutes

When you’re inspired, every second counts. Thankfully, Volt is ready, willing, and USB class-compliant on Mac, Windows, iPad, and iPhone. No downloads or drivers. Works with any DAW. So you can be up and recording in minutes.*

Shape Your Songs with UAD Plug-Ins and LUNA

Every Volt includes over 15 UAD plug-ins and instruments — the same software used to create and mix countless hit records for decades. Plus you get LUNA, UA’s award-winning DAW with authentic “big studio” sound and smart tools designed to make recording easy.

Ideal for Podcasts and Livestreams

Volt Gen 4’s Loopback feature allows you to blend live sources with computer audio. So you can mix podcasts and livestreams in realtime. Or just level up your video calls. It's the same way pro broadcasters work, built into every Volt.

Included Free UA Software

Get a collection of premium UAD plug-ins and instruments compatible with any DAW, as used on award-winning albums, plus LUNA, the world’s only DAW with authentic analog sound and smart tools that make recording easier.**

UAD Volt Studio Bundle

• LUNA Digital Audio Workstation
• Topline Vocal Tune
• UA 610 Tube Preamp & EQ Collection
• Century Tube Channel Strip
• Teletronix LA-2A Tube Compressor
• UA 1176 Classic FET Compressor
• Pure Plate Reverb
• Galaxy Tape Echo
• Oxide Tape Recorder
• Vibe Analog Machines
• PolyMAX Synth
• Anthem Analog Synth
• UAD Lion ’68 Super Lead Amp
• UAD Showtime ’64 Tube Amp

Additional Software

• Melodyne Essential by Celemony
• Ampeg SVT-VR Classic Bass Bundle by Plugin Alliance
• Includes Ampeg SVT-VR Classic, bx_Tuner, bx_Masterdesk_Classic
• Virtual Drummer DEEP by UJAM
• Virtual Bassist DANDY by UJAM
• Splice INSTRUMENT
• Prisma - Producer Lab by UVI
• FL Studio Producer Edition (3 months free)
• Access to exclusive Puremix audio education content

SPECIFICATIONS

I/O

• Simultaneous I/O: 12-in / 6-out
• Microphone Preamps: Two, 60 dB available gain with Tone Shaping
• Monitor Outputs: One stereo
• Headphone Output: One stereo (one cue mix)
• USB: One USB 2.0 Host port; one USB Hub port for peripherals — supplies 5VDC @ 0.5A maximum; one USB External Power input port — requires 5VDC @ 1A minimum
• USB Type-C Connectors: USB Type-C
• Digital / Optical: ADAT or S/PDIF optical input; ADAT IN: 8 channels at 44.1 and 48 kHz; S/MUX capable 4 channels at 96 kHz; S/MUX capable 2 channels at 192 kHz; S/PDIF IN: 2 channels at all supported sample rates
• MIDI: In, Out, ⅛” TRS Mini-Jack, MIDI Type A

A/D – D/A Conversion

• Supported Sample Rates (kHz): 44.1, 48, 88.2, 96, 176.4, 192
• Bit Depth: 32

Power

• USB Bus-Powered: Yes
• Power Consumption (@ 5VDC): 4.2W typical, 5.8W maximum
• On / Off Switch: Yes - Rear Panel

Instrument Inputs 1-2

• Frequency Response: 20 Hz to 20 kHz ±0.02 dB
• Dynamic Range (A–weighted): 116 dB
• THD + Noise (1 kHz @ -1 dBFS): -108 dB (0.0004%)
• Maximum Input Level: 13 dBu
• Input Impedance: 1 Megohms
• Available Gain (Digitally-controlled): 60 dB
• Connector Type: ¼” TS unbalanced

Microphone Inputs 1-2

• Frequency Response: 20 Hz to 20 kHz ±0.08 dB
• Dynamic Range (A–weighted): 118 dB
• THD + Noise (1 kHz @ -1 dBFS): -110 dB (0.0003%)
• Maximum Input Level: 14 dBu
• Input Impedance: 2 Kilohms
• Available Gain (Digitally-controlled): 60 dB
• Phantom Power: +48V (switchable per channel)
• Connector Type: XLR Combo Jack, pin 2 positive

Line Inputs 1-4

• Frequency Response: 20 Hz to 20 kHz ±0.05 dB
• Dynamic Range (A–weighted): 119 dB
• THD + Noise (1 kHz @ -1 dBFS): -108 dB (0.0004%)
• Maximum Input Level: 22 dBu
• Input Impedance: 10 Kilohms
• Available Gain (Digitally-controlled): 60 dB (channels 1 and 2 only)
• Connector Type: ¼” Combo Jack TRS balanced or TS unbalanced

Monitor & Line 3-4 Outputs

• Frequency Response: 20 Hz to 20 kHz ±0.05 dB
• Dynamic Range (A–weighted): 126 dB
• THD + Noise (1 kHz @ -1 dBFS): -112 dB (0.0003%)
• Maximum Output Level: 20.2 dBu
• Output Impedance: 200 Ohms
• Connector Type: ¼” TRS balanced (DC coupled)

Headphone Output

• Frequency Response: 20 Hz to 20 kHz ±0.08 dB
• Dynamic Range (A–weighted): 116 dB
• THD + Noise (1 kHz @ -1 dBFS into 300Ω): -103 dB (0.0007%)
• Maximum Output Power into 32Ω: 45 mW
• Maximum Output Power into 300Ω: 24 mW
• Connector Type: ¼” TRS stereo unbalanced (DC coupled)

System Requirements - macOS & Windows

• Available USB 2.0 (or higher) port
• USB cable (included)
• Intel, AMD, or Apple silicon processor
• Windows 10 64-bit edition or newer
• macOS 12 Monterey or newer
• Internet connection for software downloads

System Requirements - iPad & iPhone

• iPadOS / iOS 16 or newer

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