Standby Mode - PSB M4U 9 Owner's Manual

Transparency Mode
With Volume Control button function configured as Transparency Mode, press the VOL button to engage
Transparency Mode. Transparency Mode mixes outside environment noise with your audio playback to
keep you aware of your surroundings. A good example for selecting Transparency Mode is when you are
out for a walk or run and hearing car horns or sirens. If Transparency Mode is engaged, the Listening Mode
Switch indicator will be alternately flashing BLUE and GREEN.
Note that ANC function will not work when Transparency Mode is active.
Active Noise Cancellation and Amplifier
The Listening modes use the internal (rechargeable) batteries. There are three Listening modes – Active Noise
Cancelling, Active, and Passive.
1 Active Noise Cancelling Mode (ANC)
In Active Noise Cancelling mode, the "Noise Cancelling" feature is activated with the internal headphone
amplifier. The 3-position Listening Mode Switch indicator will be GREEN.
2 Active Mode (ON)
In Active mode, the internal headphone amplifier is active. The 3-position Listening Mode Switch indicator
will be BLUE.
3 Passive Mode (OFF)
In Passive mode (OFF), noise cancelling and amplifier are turned off. No power is required as the
headphones are powered by your audio source.
NOTE
Bluetooth connection will not work in Passive mode.

Standby Mode

By default, the M4U 9 will go into standby to save power if audio playback has stopped for 20 minutes. This
time length can be adjusted or bypassed in the Standby Timer option in PSB Headphone app (Settings –
Control – Standby Timer).
The M4U 9 will be at a "breathing" state as indicated by the Listening Mode Switch indicator slowly fading
or flashing intermittently. The Bluetooth indicator at the top will also turn off to show that the M4U 9 has
already unpaired from the Source device.
NOTE
At "breathing" state, press a button or switch to ANC or ON mode to once again activate or power up your
M4U 9 from standby mode.