Alesis IO|2 Portable 2-channel USB audio interface

Official Page

24-bit, 48 kHz operation with high-end A/D and D/A conversion through integrated USB audio interface

2 XLR mic inputs with 48V phantom power plus 2 1/4" balanced line inputs that can accept guitar level signals

1/4" balanced main outputs

1/4" TRS inserts on input channels

1/4" TRS headphone output

Dedicated four segment signal/clip LED meter on both channels

Zero-latency hardware monitoring

24-bit S/PDIF I/O for direct digital recording

MIDI Input/Output

USB powered—no external AC power supply necessary

Low power usage for minimal laptop battery drain

Bundled with Steinberg Cubase LE software

This product is class compliant; it does not require drivers

 

SYSTEM REQUIREMENTS
Mac: OS X 10.6, 10.7, 10.8
Windows: XP, Vista, 7, or 8
USB port

FREQUENCY RESPONSE:

• MIC/LINE IN to SPDIF/USB OUT: +/-0.1dB Input Gain = minimum
• MIC/LINE IN to MAIN OUT (through ADC/DAC) +/-0.35dB Input Gain=minimum

SIGNAL-TO-NOISE RATIO (SNR):

• MIC/LINE IN (balanced) to INSERT OUT: 110dB A-weighted, input impedance at XLR or 1/4" jack = 600 Ohms, Input Gain = minimum
• GUITAR IN (unbalanced) to INSERT OUT: 99dB A-weighted, input impedance at 1/4" jack = 600 Ohms, Input Gain = minimum
• MIC/LINE IN (balanced) to SPDIF/USB OUT: 99dB A-weighted, input impedance at MIC or LINE jack = 600 Ohms, Input Gain = minimum
• GUITAR IN (unbalanced) to SPDIF/USB OUT: 94dB A-weighted, input impedance at 1/4" jack = 600 Ohms, Input Gain = minimum
• MIC/LINE IN (balanced) to MAIN OUT (through ADC/DAC): 97dB A-weighted, input impedance at MIC or LINE jack = 600 Ohms, Input Gain = minimum
• MIC/LINE IN (balanced) to MAIN OUT (through direct monitor): 95dB A-weighted, input impedance at MIC or LINE jack = 600 Ohms, Input Gain = minimum

TOTAL HARMONIC DISTORTION + NOISE (THD+N):

• MIC/LINE IN (balanced) to INSERT OUT: <0.001% Input Gain = minimum, 1KHz input signal, INSERT OUT = 5.7dBV
• GUITAR IN (unbalanced) to INSERT OUT: 0.034% Input Gain = minimum, 1KHz input signal, INSERT OUT = 5.3dBV
• MIC/LINE IN (balanced) to SPDIF/USB OUT: 0.003% Input Gain = minimum, 1KHz input signal, DIGITAL OUT = -0.3dBFS
• GUITAR IN (unbalanced) to SPDIF/USB OUT: 0.034% Input Gain = minimum, 1KHz input signal, DIGITAL OUT = -0.7dBFS
• MIC/LINE IN (balanced) to MAIN OUT (through ADC/DAC): 0.005% Input Gain = minimum, 1KHz input signal, MAIN OUT = 5.6dBV
• MIC/LINE IN (balanced) to MAIN OUT (through direct monitor): 0.006% Input Gain = minimum, 1KHz input signal, MAIN OUT = 5.6dBV

Live Documents		Type
Product Overview		html

Manuals & Documentation	Size	Type
iO|2 - Product Overview	550 KB	pdf
iO|2 - Reference Manual	6 MB	pdf
Cubase LE - Setup Guide [RevB] A step-by-step walkthrough for registering and setting up Cubase LE with a variety of Alesis products.	664 KB	pdf
Software & Drivers	Size	Type
ASIO4All - Optional ASIO Driver for Windows [v2.10] This Alesis audio interface is a plug-and-play device, which means that no additional drivers need to be installed to use it with your computer. If you use ASIO compatible audio software on your Windows PC, this optional ASIO driver can be used to offer additional configuration options such as latency and buffer adjustments.	392 KB	zip