4.How to use the D.MODE (Desktop Mode) and super high gain mode on the M21?
The definition of Desktop Mode:
When D.mode switched turned on with USB inserted, the desktop mode icon will appear on the M21 screen. At this time, the M21 is powered directly from the USB port, without charging the M21 battery or consuming battery power.
Note:
1.If the USB power supply is insufficient, the battery will be required to supply additional power.
2.When the battery level is below 15%, inserting USB will forcibly charge the battery even it is in Desktop Mode (charging until the battery is full).
How to enable the D.MODE (Desktop Mode) on the M21?
When USB is inserted and D.MODE is displayed ON, it means the Desktop Mode is enabled.
The definition of Super High Gain mode:
Super High Gain Mode is an option for Gain. When turned on the headphone will have more power and greater voltage swing.
How to enable the Super High Gain mode on the M21?
1.Make sure the POWER in port is connected to a fast charging adapter that supports PD3.0 or PD2.0.
2.Pull down the menu and select Super high gain in Gain option. Or select the Super high gain option from Settings - Audio - Gain.
Note:
When fast charging is plugged in POWER in port and the Desktop Mode is ON, a prompt will appear asking whether to enable the Super High Gain Mode.
How to use the multifunction button?
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In Player mode: Add to Favorites (default option), Play next song randomly (randomly play the next song according to random play rules), Play/Pause, Delete currently playing song, Switch filter (cyclically), Switch equalizer (cyclically), Enter USB DAC Mode, Enter Bluetooth Receiving Mode, Lock screen/Wake up, No function
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In Bluetooth Receiving mode/USB DAC mode, the multifunction button is forcibly set to: No Function.
Note: This button only responds in Android mode/Pure Music mode, and some functions only apply to FIIO Music.
