The iO2 EXPRESS is a compact, audio-recording interface for home studios and portable recording setups. This two-channel USB device for Mac and PC-based systems enables you to record at up to 24-bit resolution for input into virtually all DAW, recording, and performance software.


Alesis iO2 Express is a 2×2 24bits 48khz analog I/O interface with instrument, mic and line inputs. It has 2 preamps and +48V phantom power plus MIDI in/out


All features appear supported it has been tested in Ubuntu 11.04 and Debian Wheezy, including MIDI. The iO2 EXPRESS is compatible with virtually all audio and MIDI software. From


  • Two-channel computer audio recording interface
  • Record up to 24-bit, 48 kHz audio into virtually any software
  • Monitor sessions with balanced studio monitor and headphone outputs
  • High-quality A/D and D/A converters, discrete-design preamps, 48V phantom power
  • Inputs for microphones, line-level sources, and instruments including guitars
  • Tricolor stereo level meter and lighted status indicators for visual monitoring
  • MIDI Input and Output jacks for playing and controlling software with instruments
  • USB bus powered – no external power supply needed
  • Alesis IO2 is class compliant; it does not require drivers