Universal Audio Volt Interfaces: Gen 2, Max and Original Models Compared (2026)
Universal Audio's Volt interfaces start at $209 CAD for the Volt 1 and Volt 1 Gen 2 and top out at $1,379 CAD for the rackmount Volt 876. They are USB interfaces for singers, guitarists, podcasters and home producers who want preamp color and compression while they record, without buying outboard gear. For most people recording one or two sources at home, the Volt 2 Gen 2 at $309 CAD is the one to buy.
Two generations share our shelf. The Gen 2 and Max desktop models are UA's current range, and the Volt 876 handles a full band from a rack. Six original Volt models are also still listed, and some of them sit at the same price as a newer model, so the differences below decide which one you take home.
Gen 2 vs the Original Volt
Both generations connect over USB-C, work with Mac, Windows, iPad and iPhone, and come with UA's LUNA recording software and a bundle of UAD plug-ins. They part ways in five places:
- Preamps. Original Volts have 55 dB of gain and one Vintage button. Gen 2 preamps have 60 dB of gain and three Tone Shaping modes.
- Compression. The Volt 176, 276, 476 and 476P add UA's analog 76 Compressor. In the Gen 2 range, compression is on the Max models only.
- Setting levels. The Volt 2 Gen 2, Volt 4 Gen 2 and the three Max models add a full-color Smart Display, Auto-Gain and Clip Protection.
- Streaming. Every Gen 2 model has built-in loopback, which blends computer audio with your mic for podcasts, streams and video calls.
- MIDI. Every original Volt has 5-pin DIN MIDI In and Out. The Volt 4 Gen 2 and the Max models use 3.5 mm TRS MIDI jacks, and the Volt 1 Gen 2 and Volt 2 Gen 2 have no MIDI ports.
Vintage Mode and Tone Shaping
Vintage mode is the button on every original Volt and on the Volt 876. It switches in an analog circuit inspired by UA's 610 tube console preamp. Because the circuit sits ahead of the converter, the 610 color is recorded with the take, and it works on mic, line and instrument sources.
Gen 2 replaces that single button with Tone Shaping, three modes on one TONE button. Warmth takes its tube character from the same 610 preamp. Focus brings the tight transients of American solid-state consoles, and Shine adds the open top end of British Class-A desks. With Tone Shaping off, the preamp records clean.
If the 610 sound is all you want, Vintage mode gives it to you. Tone Shaping adds two more voicings, which helps when a vocal and an acoustic guitar in the same song want different treatment.
The 76 Compressor and Max Processing
UA based the 76 Compressor on its 1176 Limiting Amplifier and built it as an analog circuit. It has three presets, all at a 6:1 ratio: VOC for smooth vocal leveling, GTR for guitar and bass with longer sustain, and FAST for aggressive compression. You get it on the Volt 176, 276, 476 and 476P, and on every channel of the Volt 876.
Max Processing is the compressor on the Gen 2 Max models. It has six presets for vocals, guitar and bass, modeled on the LA-2A and 1176, and the Smart Display shows gain reduction next to the input level. Both compressors work while you track, so a singer who drifts on and off the mic lands in your session already leveled.
You can also skip onboard compression and do it in the mix. The plug-in bundle that comes with the desktop Volts includes UA 1176 and Teletronix LA-2A plug-ins.
Volt 1 Gen 2: One Mic Plus a Guitar
At $209 CAD, the Volt 1 Gen 2 suits a singer-songwriter or podcaster working alone. One Tone Shaping preamp sits on the rear combo input, and a front-panel Hi-Z input takes a guitar or bass, so you can record your voice and your guitar at the same time. The original Volt 1 costs the same and records one source at a time.
Power comes from the USB connection, and a second USB-C port takes a 5 VDC supply when your phone or tablet cannot power it. It has no MIDI ports, so plan on a USB MIDI controller if you play parts in.
Volt 2 Gen 2: The One Most People Should Buy
We recommend the Volt 2 Gen 2 at $309 CAD for most home recording. Two Tone Shaping preamps, each with its own phantom power switch, handle a duet, an interview or a stereo pair of mics. Two front Hi-Z inputs take a pair of guitars or a stereo keyboard, and the box records two sources at once.
Setting levels takes less fiddling than on an original Volt. The round Smart Display shows the selected channel with its level and settings, and one encoder sets gain, monitor volume and headphone volume. Auto-Gain sets levels on one channel or both, and Clip Protection catches peaks during the take.
Compared with the original Volt 2, you pay $20 more for the display, Auto-Gain, three tone modes and loopback. You give up the original's 5-pin MIDI.
Volt 4 Gen 2: Two Preamps and More Line I/O
Producers with synths and outboard gear should look at the Volt 4 Gen 2 at $419 CAD. It keeps the two Tone Shaping preamps of the Volt 2 Gen 2 and adds two rear line inputs, two line outputs and MIDI In and Out.
Keyboards can stay plugged into the line inputs while the preamps handle vocals and guitar. Compression and talkback sit on the Max models, and speaker switching sits on the Volt 4 Max and 4P Max.
Volt 2 Max: Compression on Two Channels
Also $419 CAD, the Volt 2 Max pairs two Tone Shaping preamps with Max Processing on each channel and adds a built-in talkback mic. It runs on USB bus power.
At this price, take the 2 Max over the Volt 4 Gen 2 if you track vocals and guitar and want them compressed on the way in. Take the Volt 4 Gen 2 if you need extra line inputs and outputs for synths and outboard gear.
Volt 4 Max: Compression and Two Pairs of Monitors
For $549 CAD, the Volt 4 Max combines the 2 Max's preamps and Max Processing with the 4 Gen 2's extra line I/O. Speaker switching moves the monitor feed between a main pair of speakers on outputs 1-2 and an alternate pair on outputs 3-4. Buy it for a producer's desk with two sets of speakers and synths connected full time.
Volt 4P Max: Four Preamps on a Desk
The Volt 4P Max is the flagship desktop Volt, and it costs $699 CAD. Four Tone Shaping preamps, each with Max Processing, let a drummer, a small band or a table of podcast guests record at once, and Auto-Gain sets levels on every input together.
It keeps the speaker switching and talkback of the Volt 4 Max. If you need four mics at once and the interface lives on a desk, this is the Volt to get.
Volt 876: The Rackmount Volt
Bands that track together get the Volt 876, a rack interface with eight mic preamps at $1,379 CAD. Every channel has Vintage mode and a 76 Compressor. The preamps are digitally controlled, so the UAD Console app or LUNA saves and recalls every front-panel setting between sessions.
If you already own an Apollo or another ADAT interface, the Volt 876 can also work as an eight-channel preamp expander for it.
Every Volt at a Glance
| Model | Price (CAD) | I/O | Mic preamps | Preamp color | Onboard compression | MIDI |
|---|---|---|---|---|---|---|
| Volt 1 Gen 2 | $209 | 2-in/2-out | 1 | Tone Shaping | None | None |
| Volt 2 Gen 2 | $309 | 2-in/4-out | 2 | Tone Shaping | None | None |
| Volt 4 Gen 2 | $419 | 12-in/6-out | 2 | Tone Shaping | None | 3.5 mm TRS |
| Volt 2 Max | $419 | 10-in/4-out | 2 | Tone Shaping | Max Processing | 3.5 mm TRS |
| Volt 4 Max | $549 | 12-in/6-out | 2 | Tone Shaping | Max Processing | 3.5 mm TRS |
| Volt 4P Max | $699 | 12-in/6-out | 4 | Tone Shaping | Max Processing | 3.5 mm TRS |
| Volt 876 | $1,379 | 24-in/28-out | 8 | Vintage mode | 76 Compressor | 5-pin DIN |
| Volt 1 | $209 | 1-in/2-out | 1 | Vintage mode | None | 5-pin DIN |
| Volt 176 | $289 | 1-in/2-out | 1 | Vintage mode | 76 Compressor | 5-pin DIN |
| Volt 2 | $289 | 2-in/2-out | 2 | Vintage mode | None | 5-pin DIN |
| Volt 276 | $419 | 2-in/2-out | 2 | Vintage mode | 76 Compressor | 5-pin DIN |
| Volt 476 | $509 | 4-in/4-out | 2 | Vintage mode | 76 Compressor | 5-pin DIN |
| Volt 476P | $649 | 4-in/4-out | 4 | Vintage mode | 76 Compressor | 5-pin DIN |
Input counts on the Volt 4 Gen 2, the Max models and the Volt 876 include their optical inputs. The mic preamp column tells you how many microphones record at once.
Original Volt Models Still Listed
Each first-generation Volt has a Vintage button, 55 dB of preamp gain and 5-pin MIDI In and Out. The Volt 1, 2, 176 and 276 run on USB bus power.
Volt 1 and Volt 176
One combo input on the Volt 1 records one source at a time, at $209 CAD. The Volt 176 adds the 76 Compressor to that channel for $289 CAD. Buy the 176 if you record one vocal at a time and want it compressed as you track. Of the two $209 CAD models, the Volt 1 Gen 2 records a mic and a guitar together, and the Volt 1 keeps 5-pin MIDI for a keyboard or drum machine.
Volt 2 and Volt 276
Two combo inputs with a Vintage button each make up the Volt 2 at $289 CAD, with direct monitoring in stereo or mono. The Volt 276 puts a 76 Compressor on both channels for $419 CAD, the same price as the Volt 2 Max. The 276 gives you the analog 1176-style circuit and 5-pin MIDI. The 2 Max gives you Tone Shaping, six compressor presets and talkback.
Volt 476 and Volt 476P
Studio desks with keyboards suit the Volt 476 at $509 CAD. Its two front combo inputs have Vintage mode and the 76 Compressor, two rear line inputs take keyboards, and four line outputs sit beside the monitor outputs. The Volt 476P at $649 CAD gives all four inputs a mic preamp, a Vintage button and a 76 Compressor, with two headphone outputs that each have their own volume knob. Both ship with an external power supply.
Next to the Volt 4 Max and Volt 4P Max, the 476 and 476P cost $40 and $50 less and keep 5-pin MIDI. The Max models add Tone Shaping, talkback and up to eight more inputs over the optical port.
Which Volt to Buy
- One voice and one guitar, or a solo podcast: Volt 1 Gen 2, $209 CAD.
- Two mics, or your first home studio interface: Volt 2 Gen 2, $309 CAD.
- Synths and outboard gear around two preamps: Volt 4 Gen 2, $419 CAD.
- Vocals and guitar compressed while you track: Volt 2 Max, $419 CAD. Step up to the Volt 4 Max at $549 CAD if you also run two pairs of monitors.
- Four mics at once on a desk: Volt 4P Max, $699 CAD.
- A full band, or eight more preamps for an Apollo: Volt 876, $1,379 CAD.
- Hardware that only has 5-pin MIDI: the original Volt with the channel count you need.
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Frequently Asked Questions
What is the difference between Volt Gen 2 and the original Volt?
Gen 2 preamps have 60 dB of gain and three Tone Shaping modes: Warmth, Focus and Shine. Original Volts have 55 dB of gain and one Vintage mode inspired by the UA 610 tube preamp. Every Gen 2 model adds built-in loopback, and the Volt 2 Gen 2, 4 Gen 2 and Max models add a Smart Display, Auto-Gain and Clip Protection. The original Volts keep 5-pin DIN MIDI.
Which Volt models have a built-in compressor?
The Volt 176, 276, 476, 476P and 876 have UA's analog 76 Compressor, based on the 1176, with VOC, GTR and FAST presets at a 6:1 ratio. The Volt 2 Max, 4 Max and 4P Max have Max Processing, with six presets modeled on the LA-2A and 1176.
Can the Volt 1 Gen 2 record vocals and guitar at the same time?
Yes. It has a rear mic/line input and a front Hi-Z instrument input, so one voice and one guitar record together. The original Volt 1 records one source at a time.
Which Volt models run on USB bus power?
The Volt 1, 2, 176 and 276 run on USB bus power, and so do the Volt 1 Gen 2, 2 Gen 2, 4 Gen 2 and 2 Max. The Volt 4 Max can run on bus power and comes with an external supply. The Volt 4P Max ships with an external supply, and the Volt 876 runs on AC power.