Universal Audio Volt 4 G2 – Professional USB Audio Interface

The Universal Audio Volt 4 G2 is a versatile USB audio interface designed for musicians, producers, songwriters, podcasters, and content creators who need professional sound quality and flexible connectivity. This second-generation model combines high-resolution 32-bit/192 kHz audio conversion with two Tone Shaping Preamps, a full-color Smart Display, Auto-Gain, and Clip Protection. With 12 inputs and 6 outputs, ADAT or S/PDIF digital expansion, MIDI connectivity, and loopback functionality, it can serve as the centerpiece of both compact home studios and more advanced production setups. USB bus power also makes it a practical solution for mobile recording.

Product Features

• 12-in / 6-out USB audio interface
• Professional audio conversion up to 32-bit / 192 kHz
• Two Tone Shaping Preamps with up to 60 dB of gain
• Three analog-inspired tone modes: Warmth, Focus, and Shine
• Two mic/line inputs and two front-panel Hi-Z instrument inputs
• Additional line connections for external audio equipment
• Optical ADAT or S/PDIF input
• MIDI In and MIDI Out
• Full-color Smart Display for clear level and status monitoring
• Auto-Gain for quick input level adjustment
• Clip Protection for protection against unexpected signal peaks
• Loopback for streaming, podcasting, and content creation
• Individually switchable 48 V phantom power for microphone channels
• USB bus-powered operation
• Integration with UAD Console and LUNA

Analog Character Meets Modern 32-Bit Recording

At the heart of the interface are two Tone Shaping Preamps that provide up to 60 dB of gain while offering three distinctive tonal characters. Warmth, Focus, and Shine make it possible to shape the sound directly during recording. Warmth is inspired by the rich tube character of the UA 610, Focus draws on the sound of classic American solid-state consoles, while Shine takes inspiration from British Class-A circuitry. This gives vocals, acoustic instruments, guitars, and other sources a choice of analog-inspired colors before the signal even reaches the DAW.

Professional 32-bit/192 kHz conversion captures detail, dynamics, and transients with high precision. Supported sample rates include 44.1, 48, 88.2, 96, 176.4, and 192 kHz. The microphone inputs offer an A-weighted dynamic range of 119 dB, while the monitor and line outputs provide up to 126 dB of dynamic range, making the interface suitable for detailed recording, mixing, and monitoring.

A major workflow enhancement is the full-color Smart Display, which provides immediate visual information about inputs, levels, and important settings. Auto-Gain helps establish a suitable recording level quickly, while Clip Protection is designed to handle unexpected signal peaks. Together, these functions reduce the amount of time spent manually adjusting gain and allow musicians and creators to concentrate more fully on their performance.

For studios that need additional inputs, the optical connector can operate as either an ADAT or S/PDIF input. ADAT provides up to eight additional digital channels at 44.1 or 48 kHz. Using S/MUX, four ADAT channels are available at 96 kHz and two at 192 kHz. This means a compact recording system can later be expanded with an external ADAT-equipped microphone preamp or converter without replacing the main interface.

MIDI In and Out allow hardware such as synthesizers, keyboards, drum machines, and controllers to become part of the production setup. An integrated USB hub port adds another convenient connection for peripheral devices. Loopback functionality makes it easier to combine live input signals with computer audio, providing a useful workflow for podcasts, livestreams, tutorials, demonstrations, and other online content.

Applications

The interface is suitable for vocal and instrument recording, music production, songwriting, electronic music setups, and mobile recording. Its additional line connections, MIDI ports, and optical expansion capabilities also make it useful as the central interface in a studio containing synthesizers, controllers, external preamps, and other audio hardware. Loopback expands its role into podcasting, streaming, and content creation, while USB bus power provides additional flexibility when recording away from a permanent studio setup.

Detailed Technical Specifications

• Simultaneous I/O: 12 inputs / 6 outputs
• Microphone preamps: 2
• Microphone preamp gain: up to 60 dB
• Tone Shaping modes: Warmth, Focus, Shine
• Bit depth: 32-bit
• Sample rates: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
• Optical input: ADAT or S/PDIF
• ADAT: up to 8 channels at 44.1/48 kHz
• ADAT via S/MUX: 4 channels at 96 kHz, 2 channels at 192 kHz
• S/PDIF: 2 channels at all supported sample rates
• MIDI: In/Out via 3.5 mm TRS mini-jack, Type A
• Monitor output: 1 x stereo
• Headphone output: 1 x stereo
• Phantom power: 48 V, independently switchable per microphone channel
• USB host connection: USB 2.0 via USB-C
• USB hub: 5 V DC / 0.5 A maximum
• External power input: minimum 5 V DC / 1 A
• USB bus power: yes
• Typical power consumption: 4.2 W
• Maximum power consumption: 5.8 W
• Loopback: yes
• Auto-Gain: yes
• Clip Protection: yes
• Smart Display: full color
• Class-compliant operation: yes

Materials and Construction

The enclosure is designed for regular use in studio and mobile recording environments. Its robust construction protects the internal electronics, while the clearly arranged control panel provides fast access to essential recording functions. The full-color Smart Display complements the physical controls by making levels and settings easy to monitor. A compact format combined with USB bus power also makes the unit convenient for producers and musicians who need to move their recording system between locations.

Included in the Box

• Universal Audio Volt 4 G2 audio interface
• USB cable
• Access to the UAD Volt Studio software bundle and additional software according to the manufacturer's current bundle

Summary

High-quality 32-bit/192 kHz conversion, extensive connectivity, and workflow-focused features make this interface a flexible centerpiece for modern music production. Tone Shaping provides a choice of analog-inspired sounds at the recording stage, while Auto-Gain, Clip Protection, and the Smart Display simplify everyday operation. ADAT/S/PDIF, MIDI, additional line connectivity, and loopback provide room for a studio to grow and support a wide range of recording scenarios. For users looking for a compact interface that can handle everything from straightforward vocal sessions to expanded hardware-based setups, the Universal Audio Volt 4 G2 offers a powerful and adaptable recording solution.