Universal Audio Volt 4 Max – 12x6 USB Audio Interface with 32-bit / 192 kHz Conversion

Universal Audio Volt 4 Max is a versatile desktop USB audio interface designed for music producers, vocalists, instrumentalists, podcasters, and content creators who want to combine high-quality conversion with fast, creative tone shaping during recording. The unit provides 12 inputs and 6 outputs, two microphone preamps with 60 dB of gain, Hi-Z instrument inputs, ADAT or S/PDIF digital expansion, MIDI connectivity, and practical monitoring features. Its 32-bit / 192 kHz conversion helps capture detailed recordings, while Auto-Gain and Clip Protection make it easier to establish safe recording levels. It is an excellent solution for users who want to record vocals, guitars, synthesizers, and other sources efficiently without building a complicated hardware setup.

Product Features

• 12 inputs and 6 outputs available simultaneously.
• A/D and D/A conversion up to 32-bit / 192 kHz.
• Two microphone preamps with up to 60 dB of gain.
• Three Tone Shaping modes: Warmth, Focus, and Shine.
• Max Processing with six real-time compression presets.
• Two mic/line inputs and two front-panel Hi-Z instrument inputs.
• Additional analog line inputs and outputs for external equipment.
• Optical ADAT or S/PDIF input plus MIDI In/Out.
• Full-color Smart Display for clear level and gain-reduction monitoring.
• Auto-Gain, Clip Protection, loopback, talkback, and switching between two monitor pairs.
• Two headphone outputs with one shared cue mix.
• USB bus power and compatibility with Mac, Windows, iPad, and iPhone.

Analog Character and Fast Dynamics Control While Recording

One of the key strengths of this interface is its ability to shape your sound before the signal reaches your DAW. Three Tone Shaping modes provide distinct preamp characters. Warmth delivers a softer, tube-inspired quality, Focus provides a tighter solid-state character, while Shine draws inspiration from classic British Class-A circuitry. Max Processing adds onboard real-time compression with six musical presets designed for sources including vocals, guitar, and bass. Their character is inspired by classic studio compressors associated with the 1176 and LA-2A families. By combining the three Tone modes with six Max settings, you can quickly access more than 18 tonal combinations without building a complex chain of external processors. The Smart Display clearly shows settings and gain reduction, making it easier to monitor the signal path throughout a recording session.

The interface is equally useful in more advanced studio setups. In addition to two mic/line inputs and two instrument inputs, it provides extra line inputs 3–4 and line outputs 3–4, allowing you to integrate synthesizers or external processors. The optical input can operate as ADAT or S/PDIF. In ADAT mode, you can add up to eight channels at 44.1 or 48 kHz, four channels at 96 kHz, and two channels at 192 kHz using S/MUX. Built-in MIDI In and Out simplify the integration of keyboards, synthesizers, and drum machines, while the onboard USB hub can power compatible peripheral devices.

Applications

This interface is well suited to home and project studios recording vocals, electric guitar, acoustic guitar, bass, synthesizers, and other line-level instruments. Two microphone preamps and independently switchable 48 V phantom power allow you to use compatible condenser microphones, while two headphone outputs make sessions with another performer more convenient. Main/Alt monitor switching and the built-in talkback microphone help organize monitoring without requiring a separate monitor controller. Loopback is particularly useful for streaming, podcasts, video calls, and content creation because it lets you combine live input signals with audio played back from your computer.

Detailed Technical Specifications

• Simultaneous I/O: 12 inputs / 6 outputs.
• Bit depth: 32-bit.
• Supported sample rates: 44.1, 48, 88.2, 96, 176.4, and 192 kHz.
• Microphone preamps: 2, with up to 60 dB of gain.
• Mic inputs: XLR combo, 2 kΩ input impedance, 14 dBu maximum input level, 119 dB A-weighted dynamic range.
• Instrument inputs 1–2: 1/4" TS, Hi-Z 1 MΩ, 13 dBu maximum input level.
• Line inputs 1–2: 1/4" TRS/TS combo, 22 dBu maximum input level.
• Line inputs 3–4: 1/4" TRS/TS, 22 dBu maximum input level.
• Monitor and line outputs 3–4: 1/4" TRS/TS, 20.2 dBu maximum output level.
• Headphone outputs: 1/4" and 1/8" TRS stereo.
• Digital optical input: ADAT or S/PDIF.
• MIDI: In/Out via 1/8" TRS mini-jack, Type A.
• Phantom power: +48 V, independently switchable for each channel.
• USB connectivity: USB 2.0, USB-C connectors; integrated 5 V DC / 0.5 A USB hub.
• Power: USB bus powered; 5.5 W typical consumption, 7.1 W maximum.
• Systems: Windows 10 64-bit or later, macOS 12 or later, and iPadOS/iOS 16 or later.

Materials and Construction

The interface is designed as a rugged desktop unit suitable for regular studio use. Its control layout provides quick access to essential recording and monitoring functions, while the full-color Smart Display simplifies monitoring of levels, settings, and signal processing. The front panel gives you convenient access to instrument inputs and headphone monitoring, while connections for studio monitors, line-level equipment, MIDI devices, and digital expansion help keep your workspace organized.

Included in the Box

• Universal Audio Volt 4 Max audio interface,
• USB cable,
• UAD Volt Studio Bundle with LUNA Free and a selection of UAD plug-ins and instruments,
• additional partner software, with the exact current bundle subject to change.

Software listed by the manufacturer includes Teletronix LA-2A Tube Compressor, UA 1176 Classic FET Compressor, UA 610 Tube Preamp & EQ Collection, Century Tube Channel Strip, Pure Plate Reverb, PolyMAX Synth, and additional tools from partner developers.

A Complete Recording Hub for the Modern Studio

Universal Audio Volt 4 Max combines high-quality audio conversion, flexible connectivity, and practical features that streamline the path from an initial idea to a finished recording. You can quickly establish recording levels, protect signals from clipping, add preamp character and compression while tracking, switch between two monitor pairs, communicate through talkback, and expand your studio through ADAT. If you need a versatile USB audio interface for music production, podcasting, and streaming that can continue to serve you as your studio grows, this design offers a practical combination of sound quality, workflow efficiency, and expandability.