Introduction
This manual provides detailed instructions for the operation and maintenance of your Dpofirs HiFi MP3 Player. Please read this manual thoroughly before using the device to ensure proper functionality and to maximize your listening experience. Keep this manual for future reference.
Product Overview
Familiarize yourself with the various components and controls of your Dpofirs HiFi MP3 Player.

Image Description: A detailed diagram of the Dpofirs HiFi MP3 Player, highlighting its various parts. Labels include: Key Lock, Display Screen, Reset Button, TF Card Slot, USB Port, M/Back button, Headphone Jack, Line-in Jack, Volume Up, Volume Down, A-B Repeat/Delete, Play/Power Button, Next Track, Previous Track, Menu button, FF (Fast Forward), REW (Rewind), and a multi-function Knob.
- Key Lock: Activates or deactivates button lock.
- Display Screen: 1.8-inch TFT display for navigation and information.
- Reset Button: Used to restart the device if it becomes unresponsive.
- TF Card Slot: For inserting a microSD (TF) memory card to expand storage.
- USB Port: For charging and data transfer.
- M/Back Button: Returns to the previous menu or function.
- Headphone Jack: 3.5mm audio output for headphones.
- Line-in Jack: For audio input (if supported, typically for recording).
- Volume Up/Down: Adjusts the audio output level.
- A-B Repeat/Delete: Function for repeating a section of audio or deleting files.
- Play/Power Button: Powers the device on/off and controls playback.
- Next Track: Skips to the next audio track.
- Previous Track: Skips to the previous audio track.
- Menu Button: Accesses the main menu options.
- FF (Fast Forward): Fast forwards through audio.
- REW (Rewind): Rewinds through audio.
- Knob: Multi-functional control for navigation and selection.

Image Description: The Dpofirs HiFi MP3 Player shown with its physical dimensions: 86mm (3.4in) in height, 54mm (2.1in) in width, and 14mm (0.6in) in thickness.
Specifications
| Feature | Detail |
|---|---|
| Expansion Card Option | 8G/16G/32G (MicroSD/TF) |
| Material | Zinc Alloy |
| Display | 1.8in TFT, 128x160 resolution |
| Audio Formats Supported | MP3, WMA, WAV, APE, FLAC, OGG |
| Charging Time | Approximately 5 hours (with a 5V/1000mA charger) |
| Play Time | Approximately 60 hours (with earphone volume at 30 and screen saver enabled for lossless music) |
| EQ Settings | Customizable for various music genres |
| Volume Control | Precise 100 level digital volume control |
| Earphone Output | 80mW+80mW (at 320 ohms) |
| Transfer Interface | MICRO 5PIN, USB2.0 |
| Working Temperature | -5 to 45 degrees Celsius |
| Size | 86x54x14mm / 3.4x2.1x0.6in |
| Weight | 145g / 5.1oz |
| Connectivity | Bluetooth (BT) technology |
Setup
1. Charging the Device
- Connect the provided USB charging cable to the MICRO 5PIN USB port on the player.
- Connect the other end of the USB cable to a 5V/1000mA USB charger or a computer's USB port.
- The device will indicate charging status on the display. A full charge takes approximately 5 hours.
2. Inserting a Memory Card
- Locate the TF Card Slot on the side of the player.
- Gently insert a microSD (TF) card (up to 32GB, not included) into the slot until it clicks into place. Ensure the card is oriented correctly.
- To remove, push the card gently inward until it springs out.
3. Connecting Headphones
- Plug your 3.5mm headphones into the Headphone Jack on the player.
Operating Instructions
1. Power On/Off
- To power on, press and hold the Play/Power Button until the screen illuminates.
- To power off, press and hold the Play/Power Button until the screen turns off.
2. Basic Navigation

Image Description: A hand demonstrating the easy operation of the Dpofirs HiFi MP3 Player, specifically interacting with the multi-function knob for intuitive control.
- Use the Knob to scroll through menu options. Press the knob to select.
- Press the Menu Button to access the main menu or confirm selections.
- Use the M/Back Button to return to the previous screen or exit a function.
- The Previous Track and Next Track buttons navigate through songs.
- The REW and FF buttons are used for fast forward and rewind during playback.
- Adjust volume using the Volume Up and Volume Down buttons.
3. Music Playback

Image Description: The Dpofirs HiFi MP3 Player's 1.8-inch high-clear TFT screen, showcasing its visual clarity for an enhanced user experience.
- From the main menu, navigate to 'Music' or 'Audio'.
- Browse your music library by artist, album, genre, or all songs.
- Select a song using the Knob and press it to start playback.
- Press the Play/Power Button to pause or resume playback.
4. EQ Settings
- Access EQ settings through the 'Settings' menu or during music playback.
- Choose from preset equalizer modes or customize your own to tailor the sound to your preference.
5. Bluetooth Connectivity
- Navigate to the 'Bluetooth' option in the main menu.
- Turn Bluetooth on and search for available devices.
- Select your Bluetooth headphones or speaker from the list to pair.
6. Other Functions

Image Description: A visual representation of the Dpofirs HiFi MP3 Player's additional features, including Audio Effect Settings, Video Playback, Image Browser, E-Book Reader, High-Clear Recording, A-B Repeat, Bookmark Settings, and Memory Expansion.
- Video Playback: Supports video files for viewing on the 1.8-inch display.
- Image Browser: View stored image files.
- E-Book Reader: Read text files (e.g., TXT format).
- High-Clear Recording: Utilize the built-in microphone for clear audio recordings.
- A-B Repeat: Set start and end points for repeating a specific section of audio.
- Bookmark Settings: Mark specific points in audio or e-books for quick access.
Maintenance
- Keep the device dry. Moisture can damage electronic components.
- Avoid extreme temperatures. Do not expose to direct sunlight or very cold environments.
- Clean the screen and body with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Handle with care. Avoid dropping or subjecting the device to strong impacts.
- Store in a clean, dust-free environment when not in use.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Device does not power on. | Ensure the device is charged. Connect to a power source and try again. If unresponsive, press the Reset Button. |
| No sound from headphones. | Check headphone connection. Ensure volume is not set to zero. Test with different headphones. |
| Cannot transfer files. | Ensure the USB cable is properly connected to both the player and the computer. Check if the player is in data transfer mode. |
| Screen is frozen or unresponsive. | Press the Reset Button using a thin object (e.g., a paperclip). |
| Bluetooth device not pairing. | Ensure Bluetooth is enabled on both the player and the target device. Place devices close to each other. Try restarting both devices. |
Warranty and Support
For warranty information or technical support, please refer to the documentation included with your purchase or contact Dpofirs customer service through their official channels. Keep your proof of purchase for warranty claims.