Universal audio VOLT 4 MAX
Studio-quality sound, right in your home
The Volt 4 Max is a next-generation USB audio interface designed to offer a wealth of processing, control, and connectivity options in a compact desktop format.
Developed by the team behind the Apollo interfaces, it lets you shape your sound right from the recording stage thanks to its Tone Shaping preamps and Max dynamics processor.
Its Smart Display, Auto-Gain, and anti-clipping protection simplify setup, while ADAT, MIDI, talkback, and the ability to switch between two pairs of speakers make it easy to integrate into a full studio setup.
Three Tone Shaping modes to shape your takes
The Volt 4 Max’s two microphone preamps feature 60 dB of gain and three harmonic coloring modes:
Warmth: to add a warm character inspired by tube circuits
Focus: for a precise and present sound
Shine: to capture the brilliant character of a British Class A preamp
These modes allow you to quickly adjust the sonic character of vocals and instruments directly during recording.
Built-in Max Dynamics Processor
The Volt 4 Max features a real-time Max compressor.
It offers six musical presets specifically designed for different sources such as vocals, guitars, and basses.
Among the available settings are presets such as “Rap Vocals” and “Jangly Acoustic.”
The processing is inspired by classic studio compressors such as the 1176 and the LA-2A.
By combining the three Tone Shaping modes with the six Max presets, the Volt 4 Max offers 18 possible sound combinations that are directly accessible during recording.
32-bit / 192 kHz Audio Conversion
The Volt 4 Max is equipped with professional converters offering a resolution of up to 32-bit / 192 kHz.
This allows it to accurately capture the nuances of vocals, instruments, and other recorded sources.
Comprehensive connectivity for ambitious projects
The Volt 4 Max features two mic/line inputs, two Hi-Z instrument inputs, and additional line connections.
This allows you to work with a variety of sources:
microphones
guitars and basses
synthesizers
drum machines
external processors
stereo sources
MIDI equipment
Each microphone input features independently switchable +48 V phantom power, allowing the use of condenser microphones.
ADAT and S/PDIF Digital Expansion
The optical input can be used as ADAT or S/PDIF to expand connectivity options.
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 Max features a MIDI input and output via 3.5 mm TRS Type A mini-jacks.
This allows you to connect MIDI controllers, keyboards, synthesizers, or drum machines to your setup.
Switching Between Two Pairs of Speakers
The Volt 4 Max allows you to connect two pairs of stereo speakers: a main pair and an alternate pair.
A dedicated switch lets you quickly toggle between them to compare a mix on different monitoring systems without having to change the wiring.
Smart Display Color Screen
The Smart Display screen lets you quickly view important information related to inputs, levels, and settings.
It also displays the amount of gain reduction applied by the Max compressor, making it easier to monitor dynamic processing during recording.
Auto-Gain and Clipping Protection
The Auto-Gain feature automatically adjusts input levels in just a few seconds.
Clipping protection helps manage unexpected peaks to minimize the risk of digital clipping.
These features allow you to focus more on your performance and less on technical adjustments.
Built-in Talkback Microphone
A talkback microphone is built directly into the Volt 4 Max.
It allows you to easily communicate with musicians or other participants in another room or behind a studio window, without needing an additional dedicated microphone.
Two Headphone Outputs
The Volt 4 Max features two stereo headphone outputs sharing the same monitor mix.
This configuration facilitates collaborative sessions with multiple musicians or participants.
Built-in USB hub
A USB hub port allows you to connect an additional device and provides up to 5 V DC / 0.5 A of power.
It can be used, for example, to connect or power certain compatible USB MIDI controllers.
Integration with UAD Console and LUNA
The Volt 4 Max features full integration with UAD Console and LUNA, including session recall and low-latency headphone monitoring.
It is also compatible with the leading digital audio workstations on the market.
Loopback for Podcasting and Streaming
The Loopback feature allows you to mix sources connected to the interface with audio from your computer.
It is particularly well-suited for:
podcasts
livestreams
content creation
video calls
recordings combining microphones, instruments, and system audio
When used with the talkback microphone, it enhances the interface’s versatility for production and broadcast applications.
Key Features
12-input / 6-output USB audio interface
Desktop format
Professional 32-bit / 192 kHz audio conversion
2 mic preamps with 60 dB of gain
Three Tone Shaping modes: Warmth, Focus, and Shine
Built-in Max compressor
6 compression presets
Processing inspired by the 1176 and LA-2A compressors
18 Tone + Max combinations
2 mic/line inputs
2 Hi-Z instrument inputs
Additional line inputs
ADAT / S/PDIF optical input
Up to 8 additional channels via ADAT
MIDI input and output
Built-in talkback microphone
2 headphone outputs
2 pairs of switchable speaker outputs
Built-in USB hub
Smart Display color screen
Gain reduction display
Auto-Gain function
Clip protection
Independent +48 V phantom power per channel
Loopback function
Integration with UAD Console
Integration with LUNA
Low-latency headphone monitor returns
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 tutorial 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
Built-in processing: Tone Shaping, harmonic saturation, and Max compressor
Speaker outputs: 2 stereo pairs (Main and Alt), switchable
Headphone outputs: 2 stereo outputs, shared mix
USB: 1 USB 2.0 host port
USB hub: 1 port, max. power output 5 V DC / 0.5 A
External power input: 5 V DC / 1.5 A minimum
Included power supply: 5 V DC / 3 A
USB connection: USB-C
Digital / optical connection: ADAT or S/PDIF input
MIDI: In and Out
Talkback: Built-in microphone
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 In: Yes
MIDI Out: 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
USB-powered: Yes
Power consumption at 5 V DC: 5.5 W typical
Maximum power consumption: 7.1 W
On/Off switch: Yes, rear-mounted
Analog I/O
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: 6.35 mm (1/4") TS unbalanced jack
Microphone inputs 1-2
Frequency response: 20 Hz – 20 kHz, ±0.08 dB
A-weighted dynamic range: 119 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 positive
Line inputs 1-2
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, digitally controlled
Connectors: 6.35 mm (1/4") TRS balanced or TS unbalanced jack
Line inputs 3-4
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, digitally controlled
Connectors: 6.35 mm (1/4") 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: 6.35 mm (1/4") TRS balanced or TS unbalanced jack, DC-coupled
Headphone outputs
Number: 2
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
Connectors: 6.35 mm (1/4") and 3.5 mm stereo TRS unbalanced, DC-coupled
Headphone mix: shared between both outputs
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 minimum
macOS 12 Monterey minimum
Internet connection required to download software
iPad and iPhone
iPadOS / iOS 16 minimum
Apple Lightning to USB adapter required for compatible devices Lightning port
No Lightning adapter required for iPhones and iPads equipped 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 : 124698
