Art HQ 15 User Manual page 9

FOR BALANCED CONNECTIONS
Wire the connector's as follows:
Phone Jack Connection
tip = high
ring = low
sleeve = ground
FOR UNBALANCED CONNECTIONS
Use 1/4 inch tip-ring-sleeve or mono phone plug connectors or RCA phone jack connectors wired as
follows:
Phone Jack Connection
tip = high
ring = no connection
sleeve = ground
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