Introduction
Thank you for choosing the Aigo EROS Q Portable Hi-Fi Music Player. This device is designed to deliver high-quality, lossless audio playback with advanced features such as DSD64 decoding, Bluetooth 4.2 two-way transmission, and USB DAC functionality. This manual provides essential information for setting up, operating, and maintaining your player to ensure optimal performance and longevity.

Key Features
- High-Resolution Audio: Supports DSD64 direct digital decoding for pristine sound quality.
- Bluetooth 4.2: Two-way Bluetooth transmission for connecting to headphones or using the player as a Bluetooth receiver.
- USB DAC Functionality: Can be used as an external sound card (DAC) for your computer.
- Extensive Format Support: Compatible with a wide range of lossless and compressed audio formats including APE, FLAC, WAV, WMA, ACC, DSD, DFF, AIFF, M4A, OGG, MP3, MP2.
- Expandable Storage: Supports TF card expansion up to 512GB, with OTG support for external storage.
- Long Battery Life: Up to 20 hours of continuous playback at <=20% volume.
- Customizable Interface: Features a 2.0-inch TFT screen with 320x240 resolution and support for custom wallpapers.
- Durable Design: Integrated zinc alloy body for enhanced durability and premium feel.
- EQ Equalizer: Built-in equalizer with 10-band custom adjustment.

Setup Guide
1. Charging the Device
Before first use, fully charge the Aigo EROS Q. Connect the player to a power source using a USB Type-C cable. The charging indicator light will show the charging status.
2. Inserting a TF Card
Locate the TF card slot on the side of the player. Gently insert a compatible TF card (up to 512GB) into the slot until it clicks into place. Ensure the card is inserted in the correct orientation.
3. Connecting Headphones
Plug your 3.5mm headphones into the standard 3.5mm headphone jack on the player.
4. Powering On/Off
- To Power On: Press and hold the power button until the screen lights up.
- To Power Off: Press and hold the power button until the power-off prompt appears, then confirm.
5. Transferring Music Files
You can transfer music files to your TF card using one of the following methods:
- Directly to TF Card: Remove the TF card from the player and insert it into a card reader connected to your computer. Copy your music files to the card.
- Via USB Connection: Connect the player to your computer using the USB Type-C cable. The player may appear as a removable disk, allowing you to drag and drop files directly to the inserted TF card.
- OTG Function: The player supports OTG (On-The-Go) functionality, allowing you to connect a USB flash drive via an OTG adapter (not included) to transfer files directly to the TF card in the player.
Operating Instructions
1. Basic Navigation
The player features a central scroll wheel and dedicated buttons for navigation and control:
- Scroll Wheel: Rotate to browse menus, lists, and adjust volume. Press to select an item.
- M Button: Menu/Back button.
- Play/Pause Button: Play or pause current track.
- Next/Previous Track Buttons: Skip to the next or previous track.
- Return Button: Go back to the previous screen or menu.
2. Music Playback
Navigate to the 'Music' or 'Files' section, select your desired audio file, and press the Play/Pause button to begin playback. The player supports various audio formats including DSD, FLAC, WAV, MP3, and more.

3. Bluetooth Connectivity
The EROS Q supports Bluetooth 4.2 with two-way transmission.
- Connecting to Bluetooth Headphones/Speakers: Go to the Bluetooth settings, enable Bluetooth, and scan for devices. Select your desired device to pair.
- Using as a Bluetooth Receiver (Bluetooth DAC): This allows you to stream audio from another Bluetooth-enabled device (e.g., smartphone) to the EROS Q, utilizing its DAC for improved sound quality. Refer to the player's on-screen menu for specific instructions on enabling receiver mode.

4. USB DAC Mode
Connect the EROS Q to your computer via USB. In the player's menu, select 'USB DAC Mode'. Your computer should recognize the player as an external audio device, allowing you to use its high-quality DAC for computer audio playback.
5. Line Out Function
The 3.5mm Line Out port provides an analog audio output that can be connected to an external amplifier, active speakers, or other audio equipment, bypassing the player's internal headphone amplifier.

6. Equalizer (EQ)
Access the EQ settings from the main menu to customize the sound profile. The player offers a 10-band custom adjustment to tailor the audio output to your preferences.
7. Custom Wallpaper
Personalize your player by setting a custom wallpaper. Refer to the system settings for options to upload and apply images as your background.

Maintenance
- Cleaning: Use a soft, dry cloth to clean the player's surface. Avoid using harsh chemicals or abrasive materials.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods. Store in a cool, dry place.
- Storage: When not in use, store the player in a protective case to prevent scratches and damage. Avoid exposing the device to extreme temperatures or humidity.
- Software Updates: Check the manufacturer's website periodically for any available firmware updates to ensure optimal performance and new features.
Troubleshooting
No Power / Device Not Turning On
- Ensure the device is fully charged. Connect it to a power source and wait a few minutes before attempting to power on again.
- If the battery is completely drained, it may take a few minutes for the charging indicator to appear.
No Sound Output
- Check if your headphones are properly connected to the 3.5mm jack.
- Verify the volume level is not set to zero or muted.
- Ensure the audio file format is supported by the player.
- If using Bluetooth, ensure the headphones/speakers are paired correctly and within range.
Bluetooth Connection Issues
- Ensure both the player and the Bluetooth device are in pairing mode and within close proximity.
- Try unpairing and re-pairing the devices.
- Ensure there are no strong interferences (e.g., Wi-Fi routers, other Bluetooth devices) nearby.
Files Not Playing
- Verify that the audio file format is listed as supported in the specifications.
- Check if the file is corrupted. Try playing another file.
- Ensure the TF card is properly inserted and recognized by the player.
No FM Radio Functionality
- The Aigo EROS Q player does not include an FM radio function.
Specifications
| Feature | Specification |
|---|---|
| Model Number | EROS Q |
| Screen | 2.0-inch TFT, 320 x 240 resolution |
| Memory Capacity | TF card expansion up to 512GB, supports OTG |
| Battery | 1300mAh/3.7V Lithium Battery |
| Playback Time | >8 hours (standard conditions), up to 20 hours (at ≤20% volume) |
| Supported Audio Formats | APE, FLAC, WAV, WMA, ACC, DSD, DFF, AIFF, M4A, OGG, MP3, MP2 |
| Signal-to-Noise Ratio (SNR) | 103 dB@1KHz, ±2dB |
| Frequency Response | 20 Hz - 20 KHz |
| Dynamic Range | 98dB |
| Total Harmonic Distortion | <0.008% |
| Headphone Impedance | 8~150Ω |
| Headphone Output | 3.5mm standard headphone jack |
| Line Out | 3.5mm analog output |
| Interface | Type-C USB 2.0 (charging, data, OTG support) |
| Bluetooth | Bluetooth 4.2, two-way transmission |
| Working Temperature | -5 to 40 °C |
| Supported Operating Systems | Windows XP/Vista, Windows 7/8.1/10, Mac OS 10, Linux 2.4.2 and above |
| Product Dimensions | Approx. 90 x 55 x 15 mm |
| Product Weight | Approx. 152g |

User Tips
- Maximize Battery Life: For extended listening sessions, especially on long flights or commutes, consider keeping the volume at or below 20% to achieve up to 20 hours of playback.
- Personalize Your Player: Take advantage of the custom wallpaper feature to give your EROS Q a unique look.
- Utilize OTG for Convenience: If you frequently switch music libraries, the OTG function can be very handy for quick file transfers from a USB drive without needing a computer.
- Explore EQ Settings: Experiment with the 10-band equalizer to fine-tune the sound to your specific headphones and musical preferences.
- Consider a Protective Case: The player's zinc alloy body is durable, but a protective case (like the one shown in some product images) can further safeguard it from scratches and minor impacts.

Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided at the time of purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.





