Alesis iO2

Designed as the ideal Audio/MIDI companion to notebook computer-based recording environments, the iO|2 USB has a compact form factor that can easily fit in a laptop case or small backpack. The iO|2 USB features durable aluminum casing, USB power (eliminating cumbersome external power supplies) and is optimized for minimal laptop battery drain.

The iO|2 provides 2-channels of pristine 24-bit/48kHz audio directly to your computer via the integrated USB interface and features 2 channels of switchable Mic/Line Inputs. And with Hardware Direct Monitoring, you never have to worry about dealing with audio latency while recording.

Small enough to fit in a backpack, but powerful enough to get the job done right, the iO|2 is perfect for musicians on the go.

Features

• 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
• Ultra low-latency ASIO 2.0 drivers (with 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

Specifications

• 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