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Portable, High Fidelity, and Multiplatform
Excellent choices for mobile musicians, sound designers, and podcasters, the USB 2.0 bus-powered AudioBox iOne and iTwo provide high-quality audio I/O for Mac®, PC, and Apple iPad®. These compact, ruggedly built interfaces offer high-performance Class A mic preamplifiers, record 24-bit audio at up to 96 kHz, and include powerful, easy-to-use Studio One® Artist DAW for Mac and Windows and Capture™ Duo recording software for iPad.

Tightly Integrated Software—As You Expect from PreSonus!
PreSonus is famous for its tightly integrated hardware/software solutions, and the AudioBox i series is no exception. Of course you get Studio One Artist. But we didn’t stop there!

Class A All the Way
PreSonus’ award-winning analog signal processors and microphone preamps have long been popular among top professionals and home enthusiasts alike. So when you see the name PreSonus, you expect top audio quality—and the AudioBox i series delivers.

Heavy Metal Never Weighed So Little!
AudioBox iOne and iTwo are mobile interfaces in the best sense of the term. They can sit on a tabletop or fit in the pocket of a backpack or laptop bag and are powered by the USB bus, so you don’t have to mess with a “wall wart” power supply or AC cord. And they’re built to withstand the rigors of travel.

Two to Go, Please!
The AudioBox i series consists of two great 24-bit, 96 kHz mobile-recording solutions: the compact AudioBox iTwo and subcompact AudioBox iOne.
Both the AudioBox iOne and iTwo offer the features, high-end audio quality, and legendary PreSonus software integration that makes the i series special. Both are two-in, two-out audio interfaces with left and right balanced ¼” audio outputs and one headphone out.
Here are the differences:
The iOne has one instrument input and one microphone input. It’s perfect for a singer/songwriter who plays guitar or bass. The iTwo has two combo mic/instrument/line inputs, so it’s the way to go for recording in stereo with mics or a keyboard and for capturing duets, such as two guitars, two singers, or guitar and bass.
The iTwo has MIDI I/O; the iOne does not.
The iTwo also has a Mix knob that blends the live inputs with the return streams from the computer for zero-latency monitoring; the iOne has a fixed 50/50 low-latency monitoring blend using the Direct button.
Finally, the iTwo is compact and lightweight but the iOne is even smaller and lighter—a subcompact, if you will.
Otherwise, the features, capabilities, audio quality, construction quality, and included software of the two units are identical.
Compare Models
The iOne has one instrument input and one microphone input. It’s perfect for a singer/songwriter who plays guitar or bass. The iTwo has two combo mic/instrument/line inputs, so it’s the way to go for recording in stereo with mics or a keyboard and for capturing duets, such as two guitars, two singers, or guitar and bass.
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Mic Preamps | 1 high-headroom Class A | 2 high-headroom Class A |
Analog Inputs | 1 mic, 1 instrument | 2 mic/line/instrument |
Analog Outputs | 2 ¼" TRS Mains, 1 ¼“ Headphones | 2 ¼" TRS Mains, 1 ¼“ Headphones |
iOS (iPad) | Yes | Yes |
Maximum Bit Depth/Sample Rate | 24-bit/ 96 kHz | 24-bit/ 96 kHz |
Zero Latency Monitoring | 50/50 mix (Direct button) | Variable (Mix knob) |
Phantom Power | 1 global | 1 global |
Indicator Lights | Power (blue), Signal (green), Clip (red) | Power (blue), Signal (green), Clip (red) |
MIDI I/O | — | Yes |
Converters (Dynamic Range) | A/D/A 105 dB | A/D/A 105 dB |
Power | USB bus-powered* | USB bus-powered* |
USB | 2.0 | 2.0 |
Integrated Software | ||
Capture Duo for iPad 2-channel recording app | free download | free download |
Studio One Artist DAW | free download | free download |
Optional Software | ||
Capture for iPad 32-track Recording App | purchase from App store | purchase from App store |
*iPad requires AC power via iPad power supply or external USB power pack.
All features are available in both the AudioBox iOne and the AudioBox iTwo except where otherwise specified.
Core Technology
- Bus-powered USB 2.0/iPad audio interface
- 24-bit resolution; 44.1, 48, 88.2, and 96 kHz sampling rate
AudioBox iOne Inputs and Outputs
- 1 microphone input with low-noise, high-headroom, Class A mic preamplifier and +48V phantom power
- 1 instrument input
- 2 balanced ¼” TRS main line-level outputs
- Stereo headphone output with independent level control
AudioBox iTwo Inputs and Outputs
- 2 microphone inputs with low-noise, high-headroom, Class A mic preamplifiers and +48V phantom power
- 2 switchable line/instrument inputs
- 2 balanced ¼” TRS main line-level outputs
- 1x1 MIDI In/Out
- Stereo headphone output with independent level control
Controls
- Zero-latency monitoring via internal analog mixer (iOne: fixed 50/50 mix via Direct button; iTwo: variable mix via Mix knob)
- Large main volume knob
- Signal present and clipping LEDs
Integrated Software
- Studio One® Artist DAW software (Mac/Windows) and 6+ GB of third-party resources
- Transfer files wirelessly from Capture for iPad to Studio One
- Compatible with almost all recording software for Mac®, Windows®, and iPad®
- Nimbit® Free account to distribute and sell your music
Construction and Security
- Kensington lock hole
- Metal chassis
Computer system requirements:
Below are the minimum computer-system requirements for the AudioBox iOne and AudioBox iTwo:
Windows
- Windows® 7 x64/x86 SP1, Windows 8 x64/x86 or later
- Intel Core Duo processor (Intel Core i3 or better recommended)
- 4 GB RAM (8 GB or more recommended)
Mac
- Mac® OS X 10.7.5 or later
- Intel® Core™ Duo processor (Intel Core i3 or better recommended)
- 4 GB RAM (8 GB or more recommended)
Windows and Mac Systems
- USB 2.0 Port
- Internet connection for registration and download of included software
- Internal or external 7200 RPM storage drive highly recommended
- Monitor with at least 1280x800 resolution
Apple iPad
- iPad Air, iPad mini with Retina display, iPad (4th generation), iPad mini, iPad (3rd generation), iPad 2
- iOS 7.0.1 or higher
The minimum system requirements may differ for DAWs other than Studio One. Please check the requirements for your DAW of choice with its manufacturer.
Note that the speed of your processor, amount of RAM and size and speed of your hard drive will greatly affect the overall performance of your recording system. Also, a more powerful system (faster processor with more RAM) will allow for lower latency (signal delay) than you might experience while monitoring audio or MIDI signals. Monitor resolution for both PC and Macintosh should be no lower than 1024x768 pixels.
AudioBox iOne | AudioBox iTwo | |
Microphone Preamp | ||
Type | XLR female, balanced | XLR female, balanced |
Frequency Response (±3.0 dB) | 10 Hz to 40 kHz | 10 Hz to 40 kHz |
Input Impedance (Balanced) | 1,200Ω | 1,200Ω |
THD+N (unwtd, 1 kHz @ +4 dBu Output, Unity Gain) | < 0.008% | < 0.008% |
S/N Ratio (Unity Gain, Ref. = +4 dBu, 20 Hz to 22 kHz) | > 95 dB | > 95 dB |
Common Mode Rejection Ratio (1 kHz, 52 dB Gain) | > 65 dB | |
Gain Control Range (± 1 dB) | 0 dB to 52 dB | 0 dB to 52 dB |
Max Input Level (Unity Gain, 1 kHz @ 0.5% THD+N) | +10 dBu | +10 dBu |
Phantom Power (±2 VDC) | +48 VDC | +48 VDC |
Line Input | ||
Type | ¼" TRS female, balanced | ¼" TRS female, balanced |
Input Impedance | 10 kΩ | 10 kΩ |
Instrument Input | ||
Type | ¼" TS female, unbalanced | ¼" TS female, unbalanced |
Input Impedance | 1 MΩ | 1 MΩ |
Line Outputs | ||
Type | ¼" TRS female, balanced | ¼" TRS female, balanced |
Output Impedance | 51Ω | 51Ω |
Headphone Output | ||
Type | ¼" TRS active stereo | ¼" TRS active stereo |
Maximum Output | 60 mW/ch. @ 60Ω Load | 60 mW/ch. @ 60Ω Load |
Frequency Response (±1.0 dB) | 20 Hz - 30 kHz | 20 Hz - 30 kHz |
MIDI I/O | ||
Type | Dual 5-pin female DIN | |
Digital Audio | ||
ADC Dynamic Range (A-wtd, 48 kHz Sample Rate) | 105 dB | 105 dB |
DAC Dynamic Range (A-wtd, 48 kHz Sample Rate) | 105 dB | 105 dB |
Bit Depth | 24 | 24 |
Reference Level for 0 dBFS | +10 dBu | +10 dBu |
Internal Sample Frequency Selections (kHz) | 44.1, 48, 88.2, 96 | 44.1, 48, 88.2, 96 |
Power | USB bus-powered | USB bus-powered |
Physical | ||
Height | 1.71” (43.5 mm) | 1.71” (43.5 mm) |
Depth | 5.31" (135 mm) | 5.31" (135 mm) |
Width | 5.91” (150 mm) | 7.56” (192 mm) |
Weight | 1.35 lbs (0.62 kg) | 1.35 lbs (0.62 kg) |
Variant | N/A |