No sound is produced or volume is low.

There are six possible causes.

1. Is the [USB A, USB B, DIGITAL, LINE, PHONO, RETURN AUX] selector switch set to the proper position?

Turn the [USB A, USB B, DIGITAL, LINE, PHONO, RETURN AUX] selector switch and set it to the channel's input source.

2. Are connection cables properly connected? Connect the connection cables properly. For details, see "Connecting input terminals" and "Connecting output terminals" in the operating instructions.
3. Is [MASTER LEVEL] set to the proper position? Adjust [MASTER LEVEL] so that the master level indicator lights up to the orange indicator at the peak level.
4. Is [TRIM] set to the proper position? Adjust [TRIM] so that the channel level indicator lights up to the orange indicator at the peak level.
5. Are terminals and plugs dirty? Wipe any dirt off terminals and plugs before connecting.
6. Is [MASTER ATT.] set at for example [-12 dB]? Switch [MASTEROUT][ ATT.] at the [UTILITY] screen. For details, see "Changing the settings" in the operating instructions.