Connect instruments to INPUTS 1/2 using TRS/mono phone cables.
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Using the Hi-Z Function
t 8IFODPOOFDUJOH BQBTTJWFHVJUBSPSCBTT HVJUBSUP
an INPUT, press its so that it lights.
t 8IFODPOOFDUJOHBLFZCPBSEPSPUIFSJOTUSVNFOUUP
an INPUT, press its so that it becomes unlit.