HARMONY H224 AUDIO INTERFACE OWNER’S MANUAL
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default, the Output path of the Headphone output is monitoring Outputs 1+2. If you “Press and Hold” the
OUTPUT switch for 2 seconds, it will flash three (3) times and route audio from Outputs 3+4 to the Headphone
Output connector, and the OUTPUT button will remain illuminated, indicating the audio from 3+4 is activated
to the Headphone output path. To return to Output path 1+2 for Headphones, simply “Press and Hold” the
OUTPUT switch for 2 seconds again, and it will return to its default state without being illuminated.
J. Headphone Level: The Headphone output level is controlled via the large master knob. To change the
Headphone output level the Headphone Output path must be selected via the OUTPUT button. Referencing
the Output path section on the H224 display lens, you will need to ‘click’ the OUTPUT button until you see the
‘Headphone’ symbol illuminated in the Lens section before a level change is made.
FRONT PANEL CONNECTIONS
A. Instrument Inputs: The H224 comes equipped with two (2) dedicated instrument level inputs with ¼” female
unbalanced connectors. The electronic circuitry is optimized for use with Guitars, Basses, and many unbalanced
Instrument sources like synths and drum machines.
The inputs require no switches to operate, simply plug in your instrument to the corresponding input channel
and set your gain and you are ready to record into your software. The instrument inputs have been designed
to override the MIC/LINE inputs found on the rear panel, creating a ‘plug and play’ experience like the one you
would find on stand-alone outboard-gear preamplifiers.
B. Headphone Output:The H224 comes equipped with a single headphone output connector via the front
panel for use in monitoring audio when headphones are required. The output impedance accommodates the
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