User Manual

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6. STEREO BUTTON AND STEREO LED
This button toggles between Stereo mode and Mono mode for the Mic/
Line/Instrument inputs on either side of it. The LED lights when Stereo
mode is on. Each pair of inputs has one of these stereo buttons and can be
set to Stereo mode or Mono mode.
In Stereo mode (Stereo LED is on), the left input signal (Mic/Line/
Instrument 1, for example) is sent to the Left Main Out, while the right
input signal (Mic/Line/Instrument 2, for example) is sent to the Right Main
Out.
In Mono mode (Stereo LED is off ), each pair of input signals is mixed
together and sent to the Left and Right Main Outs as a mono signal.
7. 48V LED
Lights when phantom power is active for the inputs on either side of the
LED. Phantom power can be turned on for each combi-jack input pair via
the 48V buttons on the back panel. Dynamic microphones do not require
phantom power to operate. Most condenser microphones do require phan-
tom power to operate. If you are unsure about the phantom power require-
ments for your microphone, consult your microphone’s documentation or
contact the manufacturer.
8. INSTRUMENT 2 LED
Lights when a 1/4" plug is inserted into the Instrument 2 jack on the right
side panel.
9. OUTPUT LEVEL KNOB
Controls the Left and Right Main output level.
10. S/PDIF LED
LED lights when a valid S/PDIF signal is present at the IO 42's S/PDIF
Input. Note that S/PDIF communication is disabled unless a USB connec-
tion is established.
11. MONITOR MIX KNOB
The IO 82 unit gives you the ability to hear your analog input signals
directly and immediately while recording without having to adjust levels
in software and before the delay caused by digital converters and computer
recording latency. This zero-latency analog monitoring is controlled by the
Monitor Mix knob, which you can use to adjust the blend between the
live analog inputs (called “Direct”) and any sounds coming back from the
computer via USB (“Playback”). To hear only the live source input signals
plugged into the IO 82, turn the Mix knob fully left to Direct. To hear only
the mix from the computer, turn the Mix knob fully right to Playback. Any
signal coming in on the S/PDIF input is converted to analog and sent to
the mix control so that you can monitor this input directly (via playback
only) just like an analog input. The output from the Monitor Mix control is
routed to the Main outputs and Headphone outputs.
12. USB LED
Lights when a USB connection is detected.