PreSonus AudioBox iTwo Review: iPad and USB Interface

As an Amazon Associate I earn from qualifying purchases. This write-up is based on PreSonus’s published specifications and documentation, not hands-on testing.

The PreSonus AudioBox iTwo is a bus-powered 2×2 USB audio and MIDI interface for macOS, Windows and iPadOS with two Class A mic preamps, two switchable line/instrument inputs, 48V phantom power, 24-bit/96 kHz conversion and 5-pin MIDI I/O. Its focus is mobile recording: it works with PreSonus’s Capture Duo app on iPad and can send sessions to the desktop for mixing.

See the PreSonus AudioBox iTwo on Amazon. The linked listing is the AudioBox iTwo Studio bundle, which adds headphones, a microphone and software to the interface; bundle contents may differ from what is described here.

PreSonus AudioBox iTwo key specs

I/O	2 x 2 USB 2.0 and iPad
Inputs	2 combo inputs with Class A mic preamps; switchable line/instrument
Mic gain	0 to 52 dB (owner’s manual)
Phantom power	+48V
Conversion	24-bit / 96 kHz
Outputs	Balanced ¼” main outputs, headphone output with its own level
MIDI	5-pin in and out
Weight	1.35 lb (0.62 kg), metal chassis

Sources: PreSonus’s AudioBox iTwo page and the iOne/iTwo owner’s manual.

Recording on iPad

The iTwo is MFi (Made for iOS) compliant. On iPad, PreSonus’s free Capture Duo app records two tracks at up to 24-bit/96 kHz, with level and pan controls and basic editing. Sessions can be sent wirelessly to PreSonus’s desktop software for editing and mixing. That makes the iTwo useful for capturing rehearsals, demos or interviews without a laptop.

One known setup point: iPadOS must allow the recording app to use the microphone, even when the audio comes from the interface. If an app shows no input, check that Microphone access is enabled for it in iPad Settings.

Preamps and gain

The owner’s manual lists 0 to 52 dB of mic gain from Class A preamps, which covers condensers and most dynamic mics on singing or instruments. Each input switches between line and instrument level, so a keyboard or a guitar can be connected directly.

Zero-latency monitoring

An internal analog mixer lets you blend input and playback without delay, and the headphone output has its own level control. Monitor through the hardware while recording and turn off software monitoring to avoid hearing a delayed double.

Included software

PreSonus now bundles Fender Studio Pro recording software for macOS and Windows, alongside the Capture apps for iPad. Check the current bundle on PreSonus’s page.

A mobile demo workflow

1. Set up the iTwo with a vocal mic on input 1 and a guitar or keyboard on input 2.
2. Record the idea into Capture Duo on iPad, keeping levels conservative.
3. Send the session to your computer and open it in your DAW.
4. Replace parts, add arrangement and mix, using the same interface at your desk.

Because the same interface is used in both places, the input sound stays consistent between the demo and the studio session, which makes it easier to keep parts from the first take.

How the iTwo compares

• Versus the AudioBox USB 96: both are 2×2 with MIDI, but the iTwo is aimed at iPad recording and its manual lists more mic gain.
• Versus the Studio 24c: the 24c uses USB-C, records up to 192 kHz and has LED meters, but focuses on computer use.

Who should consider the AudioBox iTwo

• Musicians who want to record on iPad as well as a computer.
• Songwriters capturing demos and rehearsals on the go.
• Users with 5-pin MIDI gear.

Who should look elsewhere

• Computer-only users who would prefer USB-C and higher sample rates.
• Anyone needing more than two inputs.
• Podcasters wanting loopback and phone integration.

Using the iTwo on a computer

On macOS and Windows the iTwo works as a standard two-input interface. Select it as the audio device in your DAW, set 48 kHz and a small buffer while recording, and use its analog blend for latency-free monitoring. The 5-pin MIDI ports appear as a MIDI device, so an older keyboard or drum machine can be recorded as MIDI.

Alternatives

• The AudioBox USB 96 if you only record on a computer.
• The Volt 276 for USB-C and a built-in compressor.
• A Focusrite Vocaster Two if your main use is a two-person podcast.

Who the iTwo suits best

The iTwo is a good fit for songwriters who capture ideas away from the desk, teachers recording lessons on iPad, and bands who want simple two-track rehearsal recordings. It is less suited to people who need many inputs, loopback for streaming, or onboard processing.

How to set up the PreSonus AudioBox iTwo on a computer

Setting up the PreSonus AudioBox iTwo on a Mac or PC is simple. Still, a few choices early on decide how clean and responsive your recordings feel. Work through these steps in order.

1. Connect the USB cable. The iTwo is bus powered over USB 2.0, so it needs no wall adapter on a computer.
2. Install drivers if needed. On a Mac it works as a standard audio device. On Windows, install the driver and Universal Control from your PreSonus account for the lowest latency.
3. Pick the device in your DAW. Choose the AudioBox iTwo for input and output in your audio preferences. On Windows, select its ASIO driver.
4. Set the sample rate. PreSonus lists 44.1, 48, 88.2 and 96 kHz. Use 44.1 kHz for music or 48 kHz for video.
5. Set a tracking buffer. Try 128 samples when recording. Raise it to 512 or more for mixing.
6. Start with the main volume down. Then bring up your speakers and headphones slowly.

How to set up the iTwo with an iPad

The iPad workflow is the main reason to choose this interface. Because it is MFi compliant, it works with Capture Duo and other iPad recording apps.

1. Connect the iTwo to your iPad with the correct cable or adapter for your iPad’s port.
2. Check power. PreSonus notes that the iTwo works with standard iOS power accessories, so check their notes for your model.
3. Install Capture Duo or your preferred recording app.
4. In iPad Settings, allow microphone access for that app. Without it, the app sees no input.
5. Arm two tracks, one per input, and record a short test.

After the test, play it back on headphones. Listen for clipping, hum or a thin guitar tone before the real session.

Setting gain on the iTwo

The iTwo has signal-present and clip LEDs rather than full meters. Therefore, use your software meters as the main guide.

First, set the input switch to line or instrument where needed. Next, have the performer play at their loudest. Raise the gain until your DAW meter peaks around -12 to -6 dBFS. If the clip LED lights, turn the gain down.

PreSonus rates the mic preamps at 0 to 52 dB of gain. That suits condensers and most dynamics on vocals. However, very quiet dynamic mics on soft speech may need more gain than that. In those cases, an inline mic booster or a higher-gain interface helps.

Zero-latency monitoring explained

The internal analog mixer lets you hear inputs with no delay. According to PreSonus, the Direct button gives a fixed 50/50 mix of input and playback. In other words, it is an on/off blend, not a variable knob.

If the 50/50 balance does not suit you, adjust playback level in your DAW instead. Meanwhile, turn off software monitoring on the armed track. Otherwise, you hear the direct signal and a delayed copy together.

For more on avoiding delay, our recording hub links to monitoring and tracking guides.

Recording MIDI gear through the iTwo

The 5-pin MIDI in and out ports let older synths and drum machines talk to your computer or iPad. Connect your keyboard’s MIDI out to the iTwo’s MIDI in. Then select the iTwo as a MIDI input in your DAW. For audio, run the synth’s outputs into the two line inputs at the same time. As a result, you capture both the notes and the sound in one pass.

PreSonus AudioBox iTwo vs similar interfaces

The table below compares the iTwo with close options, using published manufacturer specs.

Feature	AudioBox iTwo	AudioBox USB 96	UA Volt 276	Vocaster Two
Inputs	2 combo, Class A preamps	2 combo	2 mic/line/instrument	2 XLR mic
Mic gain	0 to 52 dB	0 to 35 dB	See UA specs	High gain for dynamic mics
Max sample rate	96 kHz	96 kHz	192 kHz	See Focusrite specs
Connection	USB 2.0 and iPad	USB 2.0	USB-C, iPad and iPhone	USB-C
MIDI	5-pin in/out	5-pin in/out	In/out	None listed
Headphone outputs	1	1	1	2
Standout extra	iPad recording with Capture Duo	Simple, low-cost 2×2	76 compressor, 610 preamp mode	Loopback, phone input, Show Mix

To sum up, the iTwo wins for iPad recording and preamp gain over the USB 96. The Volt 276 adds onboard tone tools. Meanwhile, the Vocaster Two is the podcast specialist.

PreSonus AudioBox iTwo pros and cons

Pros

• Works on macOS, Windows and iPadOS.
• Class A preamps with up to 52 dB of gain, per PreSonus.
• Zero-latency analog monitoring via the Direct button.
• 5-pin MIDI in and out for older gear.
• Light metal chassis at 1.35 lb, with a Kensington lock hole.

Cons

• Sample rate tops out at 96 kHz.
• Direct monitoring is a fixed 50/50 blend, not a variable knob.
• Only clip and signal LEDs, not full meters.
• USB 2.0 connector rather than USB-C.
• No loopback for streaming.

Choosing microphones for the iTwo

Because the preamps reach 52 dB of gain, mic choice matters. Here is how common types pair with the iTwo.

• Condenser mics. These are sensitive, so they need less gain. Switch on +48V phantom power first. They suit vocals, acoustic guitar and room sound.
• Standard dynamic mics. Handheld stage mics work well for loud singing, guitar amps and drums. For quiet speech, you may run near the top of the gain range.
• Low-output dynamic and ribbon mics. Broadcast-style dynamics and ribbons can need more than 52 dB for soft sources. Plan for an inline booster in that case.

Also, never switch phantom power on or off with your speakers turned up. The pop can be loud. Ribbon mics in particular should be checked against the maker’s advice before using phantom power.

Headphones and speakers

PreSonus rates the headphone output at 60 mW per channel into 60 ohms. That drives most studio headphones at comfortable levels. Very high-impedance models may sound quieter, though, so check your headphone’s specs.

For speakers, connect powered monitors to the two balanced 1/4-inch TRS main outputs. Use balanced TRS cables where possible to reduce hum over longer runs. Then set the large main volume knob low before turning the speakers on.

Tips for rehearsal and demo recordings

The iTwo is often used to capture a band or a songwriter quickly. A few habits make those quick takes far more usable.

• Place one mic for the room and one close to the singer. Then pan them apart in the mix for width and clarity.
• Record a 10-second level check before every song, since volume often rises once players warm up.
• Name and save each take right away, so files transfer cleanly to your computer.
• Keep the interface away from amps and power strips to reduce hum.
• Back up iPad sessions to your computer the same day.

Finally, keep peaks conservative. A slightly quiet take can be raised later, but a clipped take usually cannot be fixed. For broader guidance, see our guide on choosing an audio interface.

Quick decision guide

Still unsure? Choose the iTwo if you record on an iPad and a computer and want MIDI. Choose a USB-C model with loopback if you stream. Choose a four-input interface if you track drums or a full band. The official PreSonus AudioBox iTwo page lists the complete specifications.

Common mistakes

• Not granting microphone access on iPad. Without it, recording apps cannot see the interface.
• Using a weak power source with iPad. Check PreSonus’s notes on power accessories for your iPad model and connector.
• Wrong input switch setting. Set line or instrument correctly; a guitar on line level will sound thin and quiet.
• Double monitoring. Use the hardware blend and disable monitoring in the app.
• Recording too hot. Leave headroom for loud moments.
• Expecting a variable monitor blend. The Direct button is a fixed 50/50 mix, so set playback in your DAW.
• Using a generic Windows driver. Install PreSonus’s driver for lower latency.

Setup checklist

1. On a computer: connect by USB and select the AudioBox iTwo in your DAW.
2. On iPad: connect with the appropriate cable or adapter, install Capture Duo, and allow microphone access.
3. Set each input to the right type and set gain.
4. Enable 48V for condenser mics only.
5. Record a short test, then transfer it to your computer to confirm the workflow.

More: DAW software for iPad Pro, how to choose an audio interface and the recording hub.

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