FiiO M15 Complete User Manual

Buttons and Ports

The FiiO M15 features several buttons and ports for operation and connectivity.

Pictorial Guide to Status Bar: The status bar displays information such as current volume, battery percentage, charging status, Wi-Fi connection, Bluetooth status, audio codecs (LDAC, aptX), current time, and system notifications like firmware updates or high/low temperatures.

Android Mode

In Android Mode, all third-party applications are available. Switch to other modes via 'Mode Choice' or Settings.

Pure Music Mode

In Pure Music Mode, third-party apps are automatically turned off, and FiiO Music is activated. Switch to other modes via 'Mode Choice' or Settings.

USB DAC Mode

When in USB DAC Mode, the M15 can be connected to a computer as a DAC/Amp. You can switch to other modes in the Settings menu. A dedicated FiiO USB/DAC driver may need to be installed for first-time use. Download it from FiiO Driver or fiio.com.

Bluetooth Receiving Mode

In Bluetooth Receiving Mode, the M15 can connect with Bluetooth transmitters like mobile phones. You can switch to other modes in the Settings menu. The operation guide is as follows:

Gesture Control

The M15 offers two operation modes: "Gesture operation" and "Bottom navigation bar". A choice is presented on first power-on. You can switch between them in Settings -> General -> Navigation control.

Gesture Operation Instructions:

• Return to previous menu: Swipe from the left or right edge of the screen to the center.
• Return home: Swipe up from the bottom edge of the screen.
• Switch to recent tasks: Swipe up from the bottom edge of the screen and hold.
• Trigger in-app functions: Swipe from the left, right, top, or bottom edge of the screen to the center.

Connect M15 to the Computer

When the M15 is first connected to a computer in storage mode, a corresponding driver is required. Install the driver from FiiO Driver or fiio.com based on your computer system (Windows/MAC) to enable storage functionality.

Firmware Upgrade

Online Upgrade: When connected to Wi-Fi, the M15 automatically checks for firmware updates. A notification will appear in the status bar. You can also navigate to Technical Support -> Firmware Upgrade -> Online Upgrade.

Local Upgrade:

1. Download the firmware file (e.g., "M15-ota-1.0.2.zip") from the FiiO official website. Copy it to a micro SD card or internal storage without unzipping.
2. Navigate to Technical Support -> Firmware Update -> Local Upgrade. Select the firmware file to begin the upgrade.

The M15 will automatically restart upon completion. Ensure battery is at least 30% before upgrading. Check for correct firmware if upgrades fail. Do not manipulate the device during the process.

Screenshot

Swipe down the screen with three fingers to take a screenshot. Alternatively, hold the Power and Previous track buttons together.

Languages & Input

On first startup, you can select a language. To change languages later:

1. Go to Settings -> Languages & input -> Languages -> Language preferences.
2. Press "Add a language".
3. Select your desired language.
4. Press the "=" icon next to the language and drag it to the top of the list to set it as primary.

Force to Reboot

If the M15 becomes unresponsive (e.g., stuck on the welcome page), hold the Power and Play buttons together for 10 seconds to force a reboot.

Factory Data Reset

To restore factory defaults, go to Settings -> Backup & Reset -> Factory data reset. Notice: This action will erase all data from internal storage and restore default settings. Backup important files beforehand.

WLAN

The M15 supports Wi-Fi (2.4/5G). To connect:

1. Click "Wi-Fi" in the Settings menu.
2. Slide the Wi-Fi switch to "ON". The M15 will search for available networks.
3. Tap the desired network name and enter the password if prompted to connect.

Bluetooth Transmitting

To connect to Bluetooth devices (earphones, speakers) as a transmitter, pairing is required:

1. Tap "Bluetooth" in Settings.
2. Turn Bluetooth "On" using the switch.
3. Available devices will be listed. Tap a device name to pair. Paired devices appear under "Paired devices".

Before connecting to Bluetooth, select the desired Bluetooth audio codec in Settings -> Audio -> Wireless playback quality. Disconnect and reconnect the device after changing the codec.

Notice:

• If switching between Bluetooth devices, disconnect the current one first. LDAC modes can switch in real-time.
• When Bluetooth is turned on, the M15 automatically connects to the last available device.

Output Selection

In this menu, you can switch between PO (Phone Out), LO (Line Out), and SPDIF outputs.

SPDIF Out

Choose between DoP and D2P modes. In D2P mode, PCM is output natively, while DSD is converted to PCM. In DoP mode, DSD is output directly (requires amplifier support for DSD to avoid noise).

Gain

Set the headphone output gain to "High" (high volume) or "Low" (low volume) to match different headphones for optimal audio experience.

Over-ear Headphone Mode

If using high-impedance over-ear headphones, select this mode from the drop-down list for an ultimate experience. Attention: When this mode is active, output voltage increases significantly. Avoid connecting high-sensitivity earphones to prevent damage.

Lowpass Filter Mode

The M15 features 6 lowpass filter modes, part of the AK4499 configuration, available for your preference.

Wireless Playback Quality

The M15 defaults to the highest supported Bluetooth codec. You can select a preferred codec from the list. Notice: If experiencing unstable connections, try switching to a lower Bluetooth codec.

Channel Balance

Adjust the balance between left and right channels. 10 settings are available.

ALL To DSD

In this mode, PCM is converted to DSD output for enhanced sound quality. Notice: This mode may increase device heat and slightly reduce battery life.

Adjustable Volume at LO

This setting allows control over the Line Out volume. If not selected, the maximum volume is the default.

AirPlay

To use AirPlay:

1. Ensure both the M15 and your Apple device are connected to the same Wi-Fi network.
2. Click "AirPlay" on the M15.
3. On your Apple device, click the AirPlay button and select "FiiO Music Player" to connect.
4. Play music on your Apple device to listen on the M15.

Indicator Light Control

Adjust the brightness and status of the indicator light.

• Brightness Level: Use the brightness bar to control the pulsar light.
• Follow the Volume: When selected, the indicator light brightness adjusts with the volume (higher volume = brighter light). Notice: The brightness bar is inactive when "Follow the volume" is chosen.

Indicator Status: Options include Constantly on, Pulsing, or Off for both working and charging modes. Charging mode takes priority if the device is in both states simultaneously.

Sleep

The screen turns off after a period of inactivity. The sleep time can be set from 15 seconds to 30 minutes.

Display Volume

When this option is selected, the concrete volume value will be displayed in the status bar.

Multifunction Button

Located on the bottom left, it defaults to adding the current track to favorites. You can reassign its function (e.g., play next randomly, delete song, switch filters/equalizer, enter USB DAC/Bluetooth Receiving mode) in Settings -> General -> Multifunction button.

• Short Press: Executes the chosen function.
• Long Press: Opens a function menu for one-time execution.

Notice: The multifunction button functions primarily within Android/Pure Music Mode, with some features applicable only to the FiiO Music app.

Navigation Control

Switch between gesture operation and virtual key operation in Settings -> General -> Navigation control.

Power-off Timer

• Sleep: Automatically shuts down the device after a set time (0-120 minutes). If set to OFF, this function is inactive.
• Idle Power-off: Shuts down the device if it's idle (not playing music) for a set duration (0-50 minutes). Any operation restarts the timer. If set to OFF, this function is inactive.

HOLD Switch Setting

When the HOLD key is on, all buttons are locked. Configure which buttons can be active when the screen is off in Settings -> General -> HOLD switch setting.

Double Tap to Wakeup

Enable this option to wake the screen by double-tapping when it is in sleep status.

Disable Charging

This function prohibits charging when the M15 is connected to computers or chargers, to protect the battery and reduce heat during operation. Notice: If the M15 is in low battery, this option is automatically canceled to allow charging.

In-vehicle Mode

Connect the M15 to the in-vehicle USB via a USB cable. The M15 turns on automatically and enters the FiiO Music in-vehicle interface when the vehicle is on, and turns off when the vehicle is off. Notice: In-vehicle USB ports may introduce noise; using the LA-UA1 is suggested to improve audio quality.

Homepage

Upon first launch, FiiO Music displays a guide. Swipe to the last page and tap "Immediately experience" to enter the homepage.

• Setting Icon (⚙️): Tap to enter the settings page.
• Playing Interface Icon (?): Tap to enter the playing interface.
• Recently Played: Lists songs chronologically by play date.
• Frequently Played: Lists songs by play frequency.
• Recently Added: Lists songs chronologically by addition date.

Navigation within FiiO Music:

• Tap the album cover area to jump to the now playing page.
• Tap to switch between Recently Played, Most Played, and Recently Added lists.

Playlist Interface

Click the menu icon (⋮) at the upper right of each track to open a hidden menu. Tap icons within that menu to perform operations like adding to playlists.

Track Sorted

Click the sort icon (?️) at the upper right to choose sorting priority: by added time, by filename, or alphabetically (A to Z).

Bulk Management

Click the batch icon (?) at the upper right to select multiple tracks for actions like playing, WiFi music transfer, adding to playlists, or deletion.

Quick Search

Slide your finger along the letter bar on the right side. A quick search icon will appear. Slide to initials to skip to relevant tracks.

One-tap to Locate the Current Playing

Click the locate icon (?) to quickly find the currently playing track in the list.

Search

Click the search icon (?) and input your query (track, artist, album, genre) to find information and play the track.

Now Playing Interface

• Return (⬅️): Go back.
• Switching Area (Album Cover): Tap to switch between album cover and lyrics. Swipe left/right to play next/previous track.
• Play Mode (▶️/⏸️): Control playback.
• Current Playlist (?): View the current playlist.
• Add to Favorites (⭐): Add the current track to favorites.
• Check Current Artist Info: View details about the current artist.
• Add to Playlists: Add the current track to a playlist.

Slide to Fast Forward/Rewind: Tap on the progress bar to jump to a specific point in the track. On the lyrics page, you can also slide over the lyrics timeline or adjust font size.

Equalizer

The M15 has a graphic equalizer. Choose preset genres or adjust ten frequency bands independently from -12 to +12 dB.

• Choose Preset EQ: Swipe up from the bottom to see the list of EQ presets. Tap an icon to switch.
• Customized EQ: Steps to customize EQ settings. Tap the button on the upper right to activate. Choose a genre preset (e.g., "User Defined"). Drag sliders to adjust frequencies. Swipe left/right to move between sliders. Tap the back button (⬅️) to save changes.
• Reset EQ (?): Tap the Reset button to revert to the original genre preset. Notice: A factory data reset will also reset all EQ settings.

MQA (Master Quality Authenticated)

The M15 supports MQA technology for playback of MQA audio files and streams, delivering the original master recording sound.

• A green or blue dot next to the MQA logo indicates decoding and playback of an MQA stream/file.
• A blue dot signifies an MQA Studio file, approved by the artist/producer or verified by the copyright owner.

Visit mqa.co.uk for more information.

MQA and the Sound Wave Device are registered trademarks of MQA Limited. © 2016