2. K9 knob/OUTPUT/GAIN/INPUT/power button description

[knob]]

clockwise to increase volume and counterclockwise to decrease volume. (Note: it is normal that there is no sound output about 15 degrees before the volume knob)

[OUTPUT]]

switching LO, PRE, PO three output modes

LO means that the output is switched to the rear panel, the volume knob cannot adjust the volume, and there is no sound in the front panel earphone port at this time.

PRE means that the output is switched to the rear panel, and the volume knob can adjust the volume. At this time, there is no sound in the front panel earphone port.

PO means that the output is switched to the front board. The volume knob can adjust the volume. At this time, there is no sound at the rear board interface. Please turn to [PO] when connecting headphones.

[GAIN: Gain]]

1. Gain switch: H/M/L corresponds to high/medium/low three-gear gain, and the corresponding gain is 6dB/0dB/-6dB

2. Gain is invalid under Line out and BALANCED OUT outputs

3. When the gain is L/M, the THX power supply is 10V, and when the gain is H, the THX power supply is switched to 12.5V by software.

[INPUT]]

Switch the signal input of K9 in 5 modes: USB, OPT: optical fiber, COAX: coaxial, LINE: line output, BT Bluetooth

[power button/multi-function key]]

Long press standby, long press for 2 seconds to enter standby mode, in standby mode, long press again for 2 seconds to exit standby mode

short press, the indicator light is off, enter the mute mode, all K9 output port stop output, at this time, rotate the volume knob can restore the sound