2. K9 Pro's Knob/OUTPUT/GAIN/INPUT/Power Button Description

[OUTPUT]
Switch DAC, PRE, HP three output modes

DAC means that the output is switched to the rear panel, and the volume knob cannot adjust the volume. At this time, there is no sound from the earphone port on the front panel.

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 from the headphone port on the front panel.

HP means that the output is switched to the front panel, and the volume knob can adjust the volume. At this time, there is no sound from the rear panel interface. Please turn to the [HP] file to connect the earphones.

[GAIN: Gain]
1. Gain switch: H/M/L corresponds to high/medium/low three-gear gain, and the corresponding gain is -3dB/6dB/16dB
2. The gain is invalid under Line out and BALANCED OUT output
3. When the gain is L/M, the THX power supply is 10V, when the gain is H, the THX power supply is switched to 14.5V by software

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

[Power button/Multi-function button]
Long press to standby, long press for 2 seconds to enter standby mode
Short press, the indicator light is off, in silent mode, all output ports of K9 pro stop outputting, at this time, the sound can be restored by rotating the volume knob.