POWER/CHG (power/charge) indicator

When the headphone amplifier is turned on, the indicator flashes/lights up in green.

Turns off

The headphone amplifier is not turned on.

Lights up (green)

The headphone amplifier is turned on.

Hi-Fs (High Sampling Frequency) indicator

Turns off

The headphone amplifier is being input with;

• the linear PCM digital signal of sampling frequencies under 48 kHz
• the analog signal

Lights up

The headphone amplifier is being input with;

• the linear PCM digital signal of sampling frequencies not under 48 kHz
• the DSD digital signal of the High-Resolution Audio format

DSD indicator

Turns off

The headphone amplifier is being input with;

• the linear PCM digital signal
• the analog signal

Lights up

The headphone amplifier is being input with the DSD signal of the High-Resolution Audio format.