Alesis IO|2 Manuel D'utilisation Du Propriétaire page 11

The following setup will work well for most keyboard players:
1. Keyboards – Connect the outputs of your keyboard into the "Guitar/Line"
inputs of the IO|2. If your keyboard only has one output, go ahead and connect
to whichever channel of the IO|2 you prefer. When connecting keyboards, be
sure to set the "Mic/Line Guitar" switch to "Mic/Line."
2. MIDI – If you plan to use a MIDI sequencing program on your computer to
control your keyboard, go ahead and connect the MIDI OUT of your keyboard to
the MIDI IN of the IO|2 and the MIDI OUT of the IO|2 to the MIDI IN of
your keyboard.
3. Headphones – Plug your headphones into this jack. The IO|2's headphone
output can be very loud, so turn the gain up slowly until you reach a level that is
comfortable for you. If you are experiencing distracting "latency delays" of your
guitar or voice, turn the Monitor Mix knob towards "direct" until you find a good
balance between the zero-latency mic inputs and the output of your computer.
4. Main Outputs – The IO|2 supports both balanced "TRS" and unbalanced
"TS" ¼" cables. If your speakers (or mixer) support balanced cables, use them as
they give you better performance and lower noise.
5. USB Cable – Plug in your USB cable directly into your computer and avoid
using a USB hub. Hubs can interfere with audio and MIDI timing signals and
cause problems for the IO|2.
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