Universal audio Volt 4 G2
Professional Sound with Intelligent Control
The Volt 4 Gen 2 is a versatile USB audio interface designed for scalable studio setups.
Designed by the team behind the Apollo interfaces, it combines high-resolution conversion, Tone Shaping preamps, visual control via a color display, and extensive connectivity for recording vocals, instruments, line sources, and even MIDI equipment.
Thanks to Auto-Gain and anti-clipping protection, levels are easier to adjust, while the ADAT input lets you expand the number of available channels as your setup grows.
Three Tone Shaping modes to tailor your recordings
The two microphone preamps on the Volt 4 Gen 2 feature 60 dB of gain and three Tone Shaping modes:
Warmth: to add a warm character inspired by tube circuits
Focus: for a precise and present sound
Shine: to capture the bright character of a British Class A preamp
These modes let you quickly adjust the tonal character of vocals and instruments right during recording.
32-bit / 192 kHz audio conversion
Professional 32-bit / 192 kHz converters ensure detailed reproduction of your takes.
The Volt 4 Gen 2 supports multiple sample rates up to 192 kHz, for both recording and playback.
Connectivity Designed to Grow with You
The Volt 4 Gen 2 offers extensive connectivity to support more ambitious setups.
It includes:
2 microphone inputs
2 Hi-Z instrument inputs
4 line inputs
multiple line outputs
an optical ADAT/S/PDIF input
a MIDI input
a MIDI output
a built-in USB hub
The ADAT input allows you to add up to 8 additional digital channels at 44.1 or 48 kHz.
The MIDI connectivity allows you to connect controllers, keyboards, synthesizers, and drum machines.
Smart Display Color Screen
The Smart Display lets you quickly view inputs, levels, and the interface’s main settings.
This visual feedback makes adjustments easier during sessions and simplifies monitoring of the various channels.
Auto-Gain and Overload Protection
The Auto-Gain feature automatically adjusts recording levels in just a few seconds.
Clip protection helps manage unexpected level spikes to reduce the risk of digital clipping during takes.
ADAT and S/PDIF Expansion
The optical digital input can operate in ADAT or S/PDIF mode.
In ADAT mode, it supports:
8 channels at 44.1 or 48 kHz
4 channels in S/MUX at 96 kHz
2 channels in S/MUX at 192 kHz
In S/PDIF mode, it supports 2 channels at all supported sample rates.
Built-in MIDI
The Volt 4 Gen 2 features a MIDI input and output via 3.5 mm TRS Type A mini-jacks.
This allows it to be easily integrated into a setup that includes synthesizers, MIDI controllers, keyboards, or drum machines.
Built-in USB Hub
A built-in USB hub port allows you to connect an external device and provides up to 5 V DC / 0.5 A of power.
This feature can make it easier to use certain USB MIDI controllers in a mobile or compact setup.
Integration with UAD Console and LUNA
The Volt 4 Gen 2 integrates with UAD Console and LUNA, particularly for session recall and managing low-latency headphone monitoring.
It also remains compatible with the leading digital audio workstations on the market.
Built-in Loopback for Streaming and Podcasting
The Loopback feature allows you to combine sources connected to the interface with audio from your computer.
It is particularly useful for:
podcasts
livestreams
content creation
video calls
recordings combining microphones, instruments, and system audio
An interface designed for mobile setups
The Volt 4 Gen 2 can be powered via USB in compatible setups.
It can therefore be used with a computer, tablet, or smartphone, while still offering a comprehensive enough set of connections for more elaborate studio setups.
Key Features
12-input / 6-output USB audio interface
Professional 32-bit / 192 kHz audio conversion
2 microphone preamps with 60 dB of gain
Three Tone Shaping modes: Warmth, Focus, and Shine
2 microphone inputs
2 Hi-Z instrument inputs
4 line inputs
ADAT/S/PDIF optical input
Up to 8 additional channels via ADAT
MIDI input and output
Built-in USB hub
Smart Display color screen
Auto-Gain function
Clip protection
Independent +48 V phantom power per channel
Headphone output
Line and speaker outputs
Loopback function
Integration with UAD Console
Integration with LUNA
Low-latency headphone monitor
USB-powered
Compatible with Mac, Windows, iPad, and iPhone
Rugged construction
UAD software suite and third-party software included
Included software
UAD Volt Studio Bundle
LUNA
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
Celemony Melodyne Essential
Plugin Alliance Ampeg SVT-VR Classic Bass Bundle
Ampeg SVT-VR Classic
bx_Tuner
bx_Masterdesk_Classic
UJAM Virtual Drummer DEEP
UJAM Virtual Bassist DANDY
Splice INSTRUMENT
UVI Prisma – Producer Lab
FL Studio Producer Edition – 3 months free
Exclusive Puremix educational content
The UAD Volt Studio bundles and third-party software are subject to change without notice.
Simultaneous I/O: 12 inputs / 6 outputs
Mic preamps: 2
Preamp gain: 60 dB
Tone Shaping: Warmth, Focus, and Shine
Speaker outputs: 1 stereo pair
Headphone output: 1 stereo output
USB: 1 USB 2.0 host port
USB hub: 1 port, maximum power output 5 V DC / 0.5 A
External power input: 5 V DC / 1 A minimum
USB connection: USB-C
Digital / optical connection: ADAT or S/PDIF input
MIDI: Input and output
ADAT / S/PDIF
ADAT
8 channels: 44.1 / 48 kHz
4 channels S/MUX: 96 kHz
2 channels S/MUX: 192 kHz
S/PDIF
2 channels at all supported sample rates
MIDI
MIDI input: Yes
MIDI output: Yes
Connectors: 3.5 mm TRS mini-jacks
Type: MIDI Type A
A/D and D/A conversion
Digital audio resolution: 32-bit
Supported sample rates:
44.1 kHz
48 kHz
88.2 kHz
96 kHz
176.4 kHz
192 kHz
Power supply
USB-powered: Yes
Power consumption at 5 V DC: 4.2 W typical
Maximum power consumption: 5.8 W
On/Off switch: Yes, on the rear panel
Analog inputs and outputs
Instrument inputs 1-2
Frequency response: 20 Hz – 20 kHz, ±0.02 dB
A-weighted dynamic range: 116 dB
THD + Noise, 1 kHz at -1 dBFS: -108 dB / 0.0004%
Maximum input level: 13 dBu
Input impedance: 1 MΩ
Available gain: 60 dB, digitally controlled
Connectors: 1/4" (6.35 mm) TS unbalanced jack
Microphone inputs 1-2
Frequency response: 20 Hz – 20 kHz, ±0.08 dB
A-weighted dynamic range: 118 dB
THD + noise, 1 kHz at -1 dBFS: -110 dB / 0.0003%
Maximum input level: 14 dBu
Input impedance: 2 kΩ
Available gain: 60 dB, digitally controlled
Phantom power: +48 V, switchable per channel
Connectors: XLR/jack combo, pin 2 hot
Line inputs 1-4
Frequency response: 20 Hz – 20 kHz, ±0.05 dB
A-weighted dynamic range: 119 dB
THD + noise, 1 kHz at -1 dBFS: -108 dB / 0.0004%
Maximum input level: 22 dBu
Input impedance: 10 kΩ
Available gain: 60 dB on channels 1 and 2 only
Connectors: 1/4" (6.35 mm) TRS balanced or TS unbalanced jack
Line and speaker outputs 3-4
Frequency response: 20 Hz – 20 kHz, ±0.05 dB
A-weighted dynamic range: 126 dB
THD + noise, 1 kHz at -1 dBFS: -112 dB / 0.0003%
Maximum output level: 20.2 dBu
Output impedance: 200 Ω
Connectors: Balanced 6.5 mm TRS, DC-coupled
Headphone output
Frequency response: 20 Hz – 20 kHz, ±0.08 dB
A-weighted dynamic range: 116 dB
THD + noise, 1 kHz at -1 dBFS into 300 Ω: -103 dB / 0.0007%
Maximum power into 32 Ω: 45 mW
Maximum power into 300 Ω: 24 mW
Connector: Unbalanced stereo 6.5 mm TRS, DC-coupled
System requirements
macOS and Windows
Available USB 2.0 port or higher
USB cable included
Intel, AMD, or Apple Silicon processor
Windows 10 64-bit or later
macOS 12 Monterey or later
Internet connection required for software download
iPad and iPhone
iPadOS / iOS 16 or later
Apple Lightning to USB adapter required for devices with a Lightning port
No Lightning adapter required for iPhones and iPads with a USB-C port
DAW compatibility
Compatible with major Digital Audio Workstations, including:
Ableton Live
FL Studio
GarageBand
Logic Pro
Pro Tools
LUNA
Euroguitar Reference : 124696
