1. Introduction
The 1MORE SonoFlow SE HQ31 Wireless Bluetooth Headphones are designed to deliver a superior audio experience with advanced noise-cancelling technology and extended battery life. Featuring Hi-Res Audio and LDAC support, these headphones provide crystal-clear sound for music, calls, and gaming. Their lightweight and comfortable design ensures all-day wearability, making them ideal for travel, work, and leisure.

Image: The 1MORE SonoFlow SE HQ31 headphones in black, showcasing their sleek over-ear design.
Key Features:
- -42dB QuietMax™ Hybrid Noise Cancellation: Effectively reduces ambient noise for an immersive listening experience.
- Dual Gold-Certified Hi-Res Audio: Equipped with 40mm titanium-coated dynamic drivers and LDAC codec for studio-quality sound up to 40kHz.
- Up to 90 Hours Playtime: Enjoy extended listening with 90 hours (ANC off) or 60 hours (ANC on) on a single charge. Quick charge provides 5 hours of playback from a 5-minute charge.
- Grammy-Tuned Sound & Spatial Audio: Professionally tuned by a Grammy winner with 12 EQ presets and 360° Spatial Audio for an enhanced soundstage.
- Lightweight & Comfortable Design: Weighing only 273g with protein leather ear cushions and an adjustable headband for all-day comfort.
- Dual Device Connectivity: Bluetooth 5.4 allows simultaneous connection to two devices.
- AI-Enhanced Microphones: Ensures crystal-clear calls by filtering out environmental noise.
2. What's in the Box
Please check the contents of your package to ensure all items are present:
- 1MORE SonoFlow SE HQ31 Wireless Bluetooth Headphones
- USB-C Charging Cable
- Protective Case
- User Manual (this document)
3. Setup Guide
3.1. Initial Charging
Before first use, fully charge your headphones using the provided USB-C cable. Connect the USB-C end to the headphone's charging port and the USB-A end to a compatible USB power adapter (not included) or computer USB port. The indicator light will show charging status.
3.2. Powering On/Off
To power on, long press the power button for approximately 2 seconds until the indicator light illuminates. To power off, long press the power button for approximately 5 seconds until the indicator light turns off.
3.3. Bluetooth Pairing
- Ensure the headphones are powered off.
- Long press the power button for 5 seconds to enter pairing mode. The indicator light will flash rapidly.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for "1MORE HQ31" in the list of available devices.
- Select "1MORE HQ31" to connect. Once connected, the indicator light will stop flashing and remain solid.
- The headphones can connect to two devices simultaneously. After connecting to the first device, repeat the pairing process for the second device.
3.4. Wearing the Headphones
Identify the left (L) and right (R) earcups. Adjust the headband length to ensure a comfortable and secure fit over your ears. The earcups are designed to rotate for optimal positioning and comfort.

Image: Close-up of the adjustable headband, skin-friendly leather earcups, and multi-angle rotation feature for comfortable wear.
Video: "How to Use 1MORE HQ31 Headphones" - This video demonstrates the basic functions and wearing instructions for the headphones.
4. Operating Instructions
4.1. Controls Overview
The headphones feature intuitive button controls located on the earcups for easy access to various functions:
- Power Button: Long press to power on/off. Short press to play/pause music or answer/end calls. Double click to switch between mobile phone function.
- Volume Up/Down Buttons: Press to adjust volume. Long press to skip tracks (next/previous).
- ANC Button: Press to cycle through Active Noise Cancellation (ANC) modes (ANC On, Transparency, ANC Off).
4.2. Active Noise Cancellation (ANC)
The QuietMax™ ANC technology reduces ambient noise by up to -42dB. Press the ANC button to switch between different noise-cancelling modes based on your environment:
- ANC On: Maximizes noise reduction, ideal for noisy environments like airplanes or busy offices.
- Transparency Mode: Allows you to hear your surroundings while still enjoying your audio, useful for awareness in urban areas.
- ANC Off: Disables noise cancellation.

Image: Visual representation of 1MORE QuietMax ANC Technology, highlighting its -42dB noise reduction capability.
4.3. Sound Customization (1MORE Music App)
Enhance your listening experience by downloading the 1MORE Music App. The app allows you to:
- Adjust Noise Cancellation levels.
- Select from 12 preset EQ modes (e.g., Studio, Bass Reducer, Classical, Podcast, Bass Booster, Deep) or customize your own EQ settings.
- Activate Spatial Audio for an immersive 360° sound experience.
- Enable Gaming Mode for ultra-low latency (0.08s).

Image: Screenshot of the 1MORE Music App interface showing options to adjust EQ settings and customize headphone features.
4.4. Wired Mode & Gaming Mode
For a direct connection and minimal latency, you can use the headphones in wired mode via a USB-A to USB-C or Type-C to Type-C cable (sold separately). Gaming Mode, enabled via the 1MORE Music App, reduces wireless latency to 80ms for a more synchronized audio-visual experience during gaming.

Image: Visuals illustrating the wired connection option and the low-latency gaming mode feature of the headphones.
Video: "1MORE HQ31 Headphones Overview" - This video provides a general overview of the headphone's features and usage.
5. Maintenance
5.1. Charging
To maintain optimal battery performance, charge the headphones regularly. A full charge provides up to 90 hours of playtime (ANC off). The headphones support fast charging, offering 5 hours of playback from just 5 minutes of charging.

Image: Graphic illustrating the impressive 90-hour ultra-long playtime of the headphones.
5.2. Cleaning
Gently wipe the earcups and headband with a soft, dry cloth. Do not use harsh chemicals or abrasive materials. Keep the charging port free of dust and debris.
5.3. Storage
When not in use, store the headphones in their protective case to prevent damage. The foldable design allows for compact storage, making them easy to carry.
6. Troubleshooting
If you encounter any issues with your 1MORE SonoFlow SE HQ31 headphones, please refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Low battery. | Charge the headphones fully. |
| Cannot pair with device. | Headphones not in pairing mode; Bluetooth off on device; device too far. | Ensure headphones are in pairing mode (flashing indicator). Turn on Bluetooth on your device. Move device closer to headphones (within 10 meters). |
| No sound or intermittent sound. | Volume too low; device not connected; interference. | Increase volume on headphones and device. Reconnect Bluetooth. Move away from sources of interference. |
| Poor call quality. | Microphone obstructed; environmental noise. | Ensure microphone is clear. Use ANC mode to reduce background noise. |
| ANC not working effectively. | Incorrect ANC mode; improper fit. | Cycle through ANC modes using the ANC button. Adjust headphones for a snug fit over your ears. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | HQ31 |
| Noise Control | Active Noise Cancellation (-42dB) |
| Connectivity Technology | Wireless (Bluetooth 5.4) |
| Bluetooth Range | 10 Meters |
| Audio Driver Size | 40 Millimeters Dynamic Driver |
| Frequency Response | 20 Hz - 40 KHz |
| Sensitivity | 100 dB |
| Impedance | 32 Ohm |
| Battery Life | Up to 90 Hours (ANC off) |
| Charging Time | 5 minutes for 5 hours playback |
| Headphones Jack | Type-C |
| Item Weight | 273g (approx. 9.6 oz) |
| Material | Protein leather ear cushions, lightweight alloy headband, durable plastic housing |
| Water Resistance Level | Water Resistant |
| Audio Latency (Gaming Mode) | 80 Milliseconds |
| Control Type | App Control, Button Control |
8. Warranty and Support
1MORE products are designed and manufactured to the highest quality standards. For information regarding warranty coverage, technical support, or service inquiries, please visit the official 1MORE website or contact their customer support team. Keep your purchase receipt as proof of purchase for warranty claims.





