Volt 4 Gen 2 USB Audio Interface
Album-ready sound with smart control.
- Tone Shaping Preamps. Get the rich character of a record, not a demo.
- Full 32-Bit Audio. Hear your performance in incredible detail with legendary UA quality.
- Expanded I/O. Capture your vocals and instruments simultaneously, connect instruments over MIDI, and add inputs over ADAT.
- Smart Display. Select channels and set levels fast, with bright visual feedback.
- Auto-Gain & Clip Protection. Never worry about signal peaks ruining your take again.
- Mobile Ready. Record anywhere with USB bus power — no external power supply required.*
- Easy to Use. Quickly connect and record using your favorite music apps.
- Premium UAD Software. Get the same EQs, compressors, synths, and guitar amps used by the pros, plus the award-winning LUNA DAW.
Downloads & Details
What’s Included
Included Volt Software (Subject to Change)
2-in / 6-out
Tone-Shaping Preamp
Full 32-Bit Audio
Premium UAD Software
Smart Display
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.
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.
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.
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 Max 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, our award-winning DAW with authentic “big studio” sound and smart tools designed to make recording easy.
Ideal for Podcasts and Livestreams
Volt Max’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. There’s even a Talkback mic to communicate with talent. It’s the same way pro broadcasters work, built into every Volt.
*Requires an Apple Lightning to USB Camera Adapter (except iPhone / iPads with USB-C). Windows systems use the ASIO driver, available in the UA Connect app. Requirements for bus-power vary by model and device.
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
- 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, 1/8" 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
Analog I/O
- 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
- 1/4" TS unbalanced
- Frequency Response
- 20 Hz to 20 kHz ±0.08 dB
- Dynamic Range (A–weighted)
- 119 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
- 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
- 1/4" Combo Jack TRS balanced or TS unbalanced
- 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
- 1/4" TRS balanced (DC coupled)
- 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
- 1/4" 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
iPad & iPhone
- iPadOS / iOS 16 or newer
DAW Compatibility
- All major DAWs, including Ableton Live, FL Studio, GarageBand, Logic Pro, Pro Tools, and more
Included UA Software
LUNA Free
Included
Topline Vocal Tune
$99
Hear It In Action
Topline Vocal Tune
Plug-In:
UA 610 Tube Preamp & EQ Collection
Included
Hear It In Action
UA 610 Tube Preamp & EQ Collection
Plug-In:
Century Tube Channel Strip
Included
Hear It In Action
Century Tube Channel Strip
Plug-In:
Teletronix LA-2A Tube Compressor
Included
UA 1176 Classic FET Compressor
Included
Pure Plate Reverb
Included
Hear It In Action
Pure Plate Reverb
Plug-In:
Galaxy Tape Echo
$49
Hear It In Action
Galaxy Tape Echo
Plug-In:
Oxide Tape Recorder
$49
Hear It In Action
Oxide Tape Recorder
Plug-In:
Vibe Analog Machines
$99
Hear It In Action
Vibe Analog Machines
Plug-In:
Vibe Analog Machines Essentials
Included
Hear It In Action
Vibe Analog Machines Essentials
Plug-In:
PolyMAX Synth
Included
Hear It In Action
PolyMAX Synth
Anthem Analog Synthesizer
$149
Hear It In Action
Anthem Analog Synthesizer
UAD Lion '68 Super Lead Amp
$99
Hear It In Action
UAD Lion '68 Super Lead Amp
UAD Showtime '64 Tube Amp
Included
Hear It In Action
UAD Showtime '64 Tube Amp
Compare Models
UA Studio Sessions
Frequently Asked Questions
Yes, the Volt 4 Gen 2 is worth it if you want Volt's Tone Shaping and smart controls with plenty of room to grow. It gives you two Tone Shaping Preamps, extra line I/O for outboard gear, MIDI In and Out, an onboard USB hub, and ADAT or S/PDIF optical input for up to eight more channels, offering 12 inputs and 6 outputs in total. It's still bus-powered and class-compliant, so that expanded setup can travel with you.
Volt 4 Gen 2 combines classic UA preamp character with studio-style expandability in a compact, bus-powered USB audio interface. Where many two-preamp interfaces stop at mic and headphone connections, Volt 4 Gen 2 adds line inputs and outputs, MIDI, a USB hub, and digital audio optical expansion. You can start with two mics today and grow into a much larger rig without replacing your interface.
The Volt 4 Gen 2 is a 12-in / 6-out interface, with four analog inputs plus up to eight digital channels over ADAT. On the analog side you get two mic / line combo inputs with Tone Shaping Preamps and front-panel Hi-Z instrument inputs, plus two additional line inputs. The outputs cover your stereo monitor pair, line outputs 3-4, and a stereo headphone output.
Choose the Volt 4 Gen 2 over the Volt 2 Gen 2 if you need to connect more gear. Both share the same two Tone Shaping Preamps, Smart Display, Auto-Gain, and 32-bit conversion, but Volt 4 Gen 2 adds line inputs and outputs 3-4, ADAT or S/PDIF optical input, MIDI In and Out, a USB hub, and a rear-panel power switch. If your setup is mics, instruments, and headphones, Volt 2 Gen 2 covers it; if you have synths, controllers, or outboard gear, Volt 4 Gen 2 gives it all a place to plug in.
Choose the Volt 4 Max over the Volt 4 Gen 2 if you want onboard compression and more studio control features. Volt 4 Max adds Max Processing with six compressor presets based on the 1176, LA-2A and studio VCA types, Main and Alt speaker switching, a built-in talkback mic, a second ⅛” headphone output, and gain-reduction metering on the Smart Display. Volt 4 Gen 2 keeps the same core I/O, Tone Shaping Preamps, and expandability in a more portable, bus-powered package.
The Tone Shaping Preamps on the Volt 4 Gen 2 add the character of classic analog mic preamps at the source, so the tone you hear while tracking is the tone that lands on your track. Warmth is inspired by the UA 610 tube preamp, Focus by a famous American solid state console, and Shine by classic British Class-A circuitry. Each mode is a single button press, so you can compare all three on a source in seconds and keep the one that suits the song.
The Smart Display on the Volt 4 Gen 2 shows your inputs, levels, and settings in full color, and Auto-Gain sets your recording levels in seconds. Clip Protection works alongside them to catch unexpected peaks before they distort. With more inputs to manage than a typical two-channel interface, having everything visible on the unit keeps setup quick.
The Volt 4 Gen 2 records and plays back at up to 32-bit / 192 kHz, with 119 dB of A-weighted dynamic range on the mic inputs and 126 dB on the monitor and line outputs. Mic input THD+N measures -110 dB, so your recordings stay clean and detailed until you choose to add character with Tone Shaping Preamps. The monitor outputs are balanced ¼" TRS, which keeps your speaker feed quiet on longer cable runs.
Yes, the Volt 4 Gen 2 accepts up to eight more channels through its ADAT optical input, the standard way to add mic preamps to an interface. Connect an ADAT-equipped preamp and you can go from two mic inputs to ten, which opens the door to tracking drums or a small band. ADAT carries eight channels at 44.1 and 48 kHz, four at 96 kHz, and two at 192 kHz using S/MUX.
Yes, the Volt 4 Gen 2 has MIDI In and Out on ⅛" TRS Type A jacks for keyboards, synths, drum machines, and controllers. Its onboard USB hub port also connects peripherals and can power a USB MIDI controller, supplying up to 0.5A at 5VDC. That means fewer cables on your desk and fewer USB ports tied up on your computer.
Yes, the Volt 4 Gen 2 is USB class-compliant and works with iPad and iPhone running iPadOS or iOS 16 or newer. Devices with USB-C connect directly, and devices with a Lightning port need an Apple Lightning to USB Camera Adapter. Bus-power requirements vary by device, so mobile setups with more connected gear work best with the Volt's USB external power input in use.
Yes, the Volt 4 Gen 2 works with macOS 12 Monterey or newer and Windows 10 64-bit or newer on Intel, AMD, and Apple silicon, and it's compatible with all major DAWs. It's class-compliant on Mac with no driver needed, and on Windows it uses the UA ASIO driver from the UA Connect app. It's fully integrated with the UAD Console app and LUNA, including session recall and low-latency cue mixes.
Yes, the Volt 4 Gen 2 has line inputs 3-4 and line outputs 3-4 for connecting outboard gear like hardware compressors, effects units, and synths. You can send a track out through a piece of hardware and bring it back in, or keep a synth permanently patched in alongside your mics. It's the kind of routing flexibility that usually calls for a much larger interface.
Yes, the Volt 4 Gen 2 has built-in loopback, which blends your live inputs with computer audio for streams, podcasts, and video calls in realtime. With two mic inputs plus extra line inputs, you can bring in a co-host, a synth, or a mixer feed alongside your own voice. Tone Shaping Preamps give every voice on the broadcast real studio character.
No, the Volt 4 Gen 2 uses UAD Native plug-ins, which run on your computer's processor instead of dedicated DSP hardware. The included UAD Volt Studio Bundle, with the Teletronix LA-2A, UA 1176, and UA 610 Tube Preamp & EQ Collection, runs right in LUNA or your favorite DAW. If you later want to track through UAD plug-ins with Unison™ preamp modeling, UA's Apollo interfaces add onboard DSP for that workflow.
The Volt 4 Gen 2 includes the UAD Volt Studio Bundle, which pairs the LUNA DAW with UAD plug-ins and instruments used on countless hit records. With MIDI onboard, the PolyMAX and Anthem synths are ready to play from your keyboard, alongside the Teletronix LA-2A and UA 1176 compressors, UA 610 Tube Preamp & EQ Collection, Pure Plate Reverb, Galaxy Tape Echo, and the UAD Lion '68 and Showtime '64 guitar amps. Additional instruments and production tools from partner developers are included too, and bundle contents are subject to change.
Yes, the Volt 4 Gen 2 makes a great hub for a home studio because it connects the core pieces most setups need. Two Tone Shaping mic inputs handle vocals and instruments, balanced outputs feed your studio monitors, MIDI and the USB hub bring in keyboards and controllers, and line I/O connects synths or outboard gear. Add headphones, a mic, and the included LUNA DAW and UAD plug-ins, and you have a complete recording, production, and mixing setup.
Yes, the Volt 4 Gen 2 works well for a virtual drum setup, since its MIDI In connects directly to an electronic drum module. Your kit triggers a drum instrument plug-in in your DAW, and you hear the result through Volt's headphone or monitor outputs. The extra line inputs also let you record the module's own audio outputs, so you can capture both the MIDI performance and the kit's built-in sounds at the same time.