1. Introduction
This manual provides essential information for the proper setup, operation, and maintenance of your LENRUE SoundBoom A25 USB Computer Speaker. Please read these instructions carefully before using the product to ensure optimal performance and longevity.
2. Product Overview
The LENRUE SoundBoom A25 is a wired stereo computer speaker designed for use with various devices such as desktops, laptops, and smartphones. It features a compact design and is powered via USB, with audio input through a 3.5mm jack. The speaker also includes integrated LED lighting.

Figure 2.1: Front view of the LENRUE SoundBoom A25 speaker. This image displays the speaker's elongated, white casing with a metallic grille covering the front. Circular LED lights are visible on both ends of the speaker, indicating its illuminated feature.
3. Setup Instructions
Follow these steps to connect your SoundBoom A25 speaker to your device:
- Connect USB Power: Insert the USB cable from the speaker into an available USB port on your computer, laptop, or a compatible USB power adapter. The speaker is USB bus powered and will automatically power on with your computer.
- Connect Audio Input: Plug the 3.5mm audio jack from the speaker into the headphone or audio output port of your computer, laptop, smartphone, or other audio source.
- Placement: Position the speaker on a stable, flat surface near your device. For optimal stereo sound, ensure the speaker is facing the listener.
The speaker is designed for plug-and-play functionality, requiring no additional drivers or software installation.

Figure 3.1: The LENRUE SoundBoom A25 speaker placed horizontally on a desk, directly beneath a computer monitor. This illustrates a typical setup for desktop use, highlighting its compact form factor.
4. Operating Instructions
Once connected, the speaker is ready for use:
- Power On/Off: The speaker powers on automatically when connected to a powered USB port. To turn off, disconnect the USB power cable.
- Volume Control: Adjust the volume directly from your connected device (computer, laptop, smartphone). The speaker itself may feature touch controls for volume adjustment; refer to the top surface of the speaker for specific touch-sensitive areas if present.
- LED Lighting: The integrated LED lights will illuminate when the speaker is powered on. The behavior of these lights (e.g., flashing with volume) is automatic and generally not user-adjustable.

Figure 4.1: Top-down view of the LENRUE SoundBoom A25 speaker, highlighting the central grille and the subtle control buttons located on the top surface. This perspective shows the sleek design and potential touch control areas.
5. Maintenance
To maintain your speaker in good condition:
- Cleaning: Use a soft, dry cloth to wipe the exterior of the speaker. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use for extended periods, store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Avoid dropping the speaker or exposing it to excessive force, which can damage internal components.
6. Troubleshooting
If you encounter issues with your SoundBoom A25 speaker, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from speaker |
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| Poor sound quality or static noise |
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| LED lights not working |
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7. Specifications
| Feature | Detail |
|---|---|
| Model Name | SoundBoom A25 |
| Brand | LENRUE |
| Speaker Type | Computer Speaker |
| Connectivity Technology | Auxiliary (3.5mm), USB (for power) |
| Audio Output Mode | Stereo |
| Power Source | USB Bus Powered |
| Compatible Devices | Desktop, Laptop, Personal Computer, Smartphone |
| Product Dimensions (LxWxH) | 39.6 cm x 5.8 cm x 6.6 cm (15.6 x 2.3 x 2.6 inches) |
| Item Weight | 620 g |
| Colour | White |
| Special Features | Portable, USB Port, LED Light |
| Control Method | Touch (for volume, if present on unit), Device-controlled |

Figure 7.1: The LENRUE SoundBoom A25 speaker placed on a small white side table next to a grey sofa, demonstrating its portability and suitability for various environments beyond a typical desk setup.
8. Warranty and Support
Warranty Information: This product is covered by a manufacturer's warranty. For specific details regarding warranty terms, duration, and conditions, please refer to the warranty card included with your purchase or contact LENRUE customer support directly. Proof of purchase may be required for warranty claims.
Customer Support: If you require further assistance, have questions not covered in this manual, or need to report a defect, please contact LENRUE customer support through their official website or the retailer from whom you purchased the product. Please have your model number (SoundBoom A25) and purchase details ready when contacting support.





