Setup & Pairing: 1more Sonoflow Headphones HC905 User Manual

1more Sonoflow Headphones HC905

Introduction

The 1more Sonoflow Headphones HC905 are premium wireless over-ear headphones designed for audiophiles, commuters, and anyone seeking high-fidelity sound with powerful noise cancellation. Certified by both Hi-Res Audio and Hi-Res Audio Wireless, these headphones deliver studio-quality audio with a frequency response up to 40 kHz, ensuring every musical nuance is heard with exceptional clarity[1][4]. Whether you’re working remotely, commuting, traveling, or simply relaxing at home, the Sonoflow HC905 offers a private, immersive listening experience free from external distractions.

Key benefits of the 1more Sonoflow Headphones HC905 include industry-leading battery life—up to 70 hours of continuous playback with ANC off and 50 hours with ANC on—making them ideal for long trips or daily commutes[2][3]. The advanced QuietMax active noise cancellation technology blocks out ambient noise effectively, while LDAC support enables high-resolution wireless audio streaming at up to 990 kbps—a rare feature in this price range[1][4]. Users can also personalize their sound with 12 studio-grade EQ presets via the 1MORE MUSIC app, ensuring a tailored listening experience for every genre or mood.

These headphones are an excellent choice for music lovers, frequent travelers, remote workers, and students who value both sound quality and long-lasting comfort. The 1more Sonoflow Headphones HC905 are widely available online and in select electronics retailers, typically priced in the mid-range segment, offering exceptional value for their advanced features. With robust Bluetooth 5.0 connectivity, clear call quality, and a comfortable, lightweight design, the Sonoflow HC905 stands out as a versatile, high-performance audio companion for everyday use.

Power On: Press and hold for 25

Power Off: Press and hold for 5S

Playback
Play / Pause: Click

Phone Call

• Answer / Hang up: Click
• Switch to the mobile phone: Double click
• Decline: Press and hold for 2S
• Voice Assistant (Bluetooth on and not in a call):
• Double click

ANC ON / Pass-through / ANC OFF| (Switch in turn): Click
 

• Volume +: Click
• Previous Track: Press and hold for 2S
• Volume -; Click
• Next Track: Press and hold for 2S

Note: When in wired mode, noise cancellation is not available, and the volume adjustment and song selection can be operated via the connected device.

Extra Functions

1. Unpairing: Press and hold the "+" and "*-" buttons for 5 seconds, and the headphones will switch to automatic discovery mode.
2. Security pairing: If the pairing phone has Bluetooth before 3.0, please use the default security code "0000".
3. Battery/Volume display: Currently supports iOS only; may not support other operating systems.
4. Out of wireless connection range: The headphones will try to reconnect for 3 minutes. Then they will turn off automatically if not connected to any device..
5. OTA Firmware Update: It can be synchronously upgraded via the IMORE MUSIC APP while the headphones are connected to each other with at least 10% battery.
6. Functions of the IMORE MUSIC APP may vary with different devices or operating systems. For more details, please contact our customer service.

Specifications

• Model: HC905
• Driver: 40mm DLC (Diamond-Like Carbon) dynamic driver with PET film for rich, detailed sound and extended frequency response up to 40 kHz
• Bluetooth: Bluetooth 5.0 with support for LDAC, AAC, and SBC codecs for high-resolution wireless audio
• Noise Cancellation: QuietMax ANC technology for immersive, distraction-free listening
• Battery Life: Up to 70 hours of playback (ANC off), 50 hours (ANC on); fast charging: 5 minutes = 4-5 hours of playback, full charge in 80 minutes
• Battery Capacity: 720 mAh
• Weight: 250g
• Dimensions: 170 × 192 × 82 mm
• Impedance: 32 Ω
• Microphones: 5 beamforming microphones with an AI algorithm for clear calls
• EQ & App: 12 studio-grade EQ presets, customizable via 1MORE MUSIC app
• Included Accessories: Carrying case, USB-C charging cable, 2.5mm to 3.5mm audio cable, warranty card, user manual
• Wired Use: 3.5mm audio cable for zero-latency listening, though note that headphones may power off automatically when using wired mode
• Operating Temperature: 0℃ - 45℃
• Bluetooth Range: 10 meters (open space)

Compared to similar products in its price range, the 1more Sonoflow Headphones HC905 offer superior battery life, Hi-Res Wireless certification, and LDAC support—features often reserved for more expensive models. The combination of advanced ANC, customizable sound, and robust build quality makes these headphones a standout choice for users seeking premium features without a premium price tag.

1MORE (1) Year Limited Warranty

IMORE warrants to the original retail purchaser that this product is to be free from defective materials and workmanship for a period of one year from the date of purchase if it is properly used and maintained. If this product proves defective in either material or workmanship, 1MORE, at its option, will (a) repair the product with new or refurbished parts, or (b) replace the product with an equivalent new or refurbished product, at no charge for parts or labor. If the product model is no longer available and cannot be repaired effectively or replaced with an identical model, MORE at its sole option may replace the unit with a current model of equal or greater value. In some cases, modification to the mounting surface may be required where a new model is substituted. 1MORE assumes no responsibility or liability for such modification. TO OBTAIN A REPAIR OR REPLACEMENT UNDER THE TERMS OF THIS WARRANTY, PLEASE RETURN TO THE ORIGINAL DEALER FIRST, T AND THE ORIGINAL DEALER SHALL REPAIR THE PRODUCT WITH NEW OR REFURBISHED PARTS OR REPLACE THE PRODUCT WITH AN EQUIVALENT NEW OR REFURBISHED PRODUCT.

You will be required to submit a proof of purchase details, including but not limited to a receipt or sales invoice. 

Return shipping for exchanges/repairs is the sole responsibility of the original retail purchaser.

Limitations:

• This limited warranty does not cover the failure of the product resulting from improper installation, misuse, abuse, accident, neglect, mishandling, or wear from ordinary use or environmental deterioration.
• This limited warranty does not cover cosmetic damage, including paint damage, or consequential damage to other components or premises which may result from any reason from the failure of the product.
• This limited warranty is null and void for products not used in accordance with MORE's instructions.
• This limited warranty is null and void for products with altered or missing serial numbers and for products not purchased from an AUTHORIZED dealer.
• This limited warranty terminates if you sell or otherwise transfer this product to another party.

Troubleshooting

Despite their reliability, users may occasionally encounter issues with the 1more Sonoflow Headphones HC905. Below are common problems, solutions, and preventive measures:

• Connection Issues: If the headphones fail to connect, ensure Bluetooth is enabled on your device, the headphones are in pairing mode (hold the power button until the LED flashes), and there are no nearby interference sources. Reset the headphones if necessary.
• Poor Battery Life: Actual playtime may vary based on usage habits, codec, and volume. Charge fully before first use and avoid exposing the headphones to extreme temperatures. If battery life drops significantly, consider a factory reset or contact support.
• Sound Quality Problems: Ensure the audio source supports high-resolution codecs like LDAC. Try different EQ presets in the app to enhance sound. If using wired mode, check cable integrity.
• ANC Not Working: Verify that ANC is enabled via the app or physical controls. Update firmware through the app if available.
• Microphone Issues: Clean microphone ports and check for obstructions. Ensure the correct audio profile (HFP) is selected during calls.

For persistent issues, consult the user manual or visit the official 1more support website. The product includes a standard warranty—check your region’s policy for coverage details. For direct assistance, contact 1more customer support via their official website or the retailer where the headphones were purchased.

Pros & Cons

Pros

• Exceptional Battery Life: Up to 70 hours of playback (ANC off) and 50 hours (ANC on) outclass most competitors.
• Hi-Res Audio & Wireless Certification: Delivers studio-quality sound with LDAC support for lossless streaming.
• Powerful ANC: QuietMax technology effectively blocks ambient noise for focused listening.
• Customizable Sound: 12 EQ presets via the 1MORE MUSIC app allow personalized audio profiles.
• Comfortable Design: Plush ear pads and a lightweight build ensure extended listening sessions without fatigue.
• Value for Money: Offers premium features at a mid-range price point, making it a strong alternative to more expensive brands.

Cons

• No Multipoint Bluetooth: Cannot connect to two devices simultaneously, a feature found in some competitors.
• Wired Mode Limitations: Headphones may power off automatically when using the auxiliary cable, limiting true passive listening.
• Plastic Build: While durable, some users may prefer metal or premium materials for a luxury feel.
• App Dependency: Advanced features like EQ customization require the 1MORE MUSIC app.
• Bulkier Than Some Rivals: At 250g, they are slightly heavier than some ultraportable models.

Overall, the 1more Sonoflow Headphones HC905 deliver outstanding audio performance, battery life, and ANC at a competitive price, though power users may miss multipoint connectivity and true passive wired mode.

Customer Reviews

User feedback for the 1more Sonoflow Headphones HC905 is overwhelmingly positive, with particular praise for their battery life, sound quality, and effective noise cancellation. Many customers highlight the headphones’ ability to last through long trips without recharging, as well as the clarity and depth of audio reproduction, especially when streaming high-resolution content via LDAC. The plush ear pads and comfortable fit are also frequently mentioned as highlights for extended listening sessions.

Common complaints include the lack of multipoint Bluetooth connectivity, which some competitors offer, and the automatic power-off feature when using the headphones in wired mode. A few users note that the plastic build, while durable, doesn’t feel as premium as metal alternatives. Despite these minor drawbacks, most reviewers agree that the Sonoflow HC905 offers excellent value for money, especially for users prioritizing audio quality and battery life over luxury materials or advanced connectivity features.

Star ratings from major retailers and tech sites typically range from 4 to 4.5 out of 5, reflecting strong overall satisfaction. Prospective buyers are recommended to consider these headphones if they want a reliable, feature-packed wireless audio solution without breaking the bank—especially for commuting, travel, or all-day listening at home.