Introduction
Thank you for choosing the Trust Asto Sound Bar Speaker. This elegant horizontal speaker is designed to fit ideally below any PC monitor, providing rich stereo sound for your computer, laptop, Mac, or TV. With its compact design and convenient features, it enhances your audio experience for entertainment and productivity.
Key features include:
- 12 W peak power (6 W RMS) for clear audio.
- Compact design to fit below any PC monitor.
- Large, illuminated volume control button for easy adjustment.
- Convenient headphone and microphone connections on the front side.
- USB-powered, eliminating the need for a wall power outlet.

Image: Front view of the Trust Asto Sound Bar Speaker, showcasing its sleek black and silver design with the central volume knob.
Setup Guide
Follow these steps to set up your Trust Asto Sound Bar Speaker for optimal performance.
1. Physical Placement
The sound bar is designed to fit elegantly under your PC monitor or TV. Ensure there is enough space for proper ventilation.

Image: The sound bar positioned beneath a computer monitor, illustrating its space-saving design and approximate dimensions (470mm length, 75mm height).
2. Connecting the Speaker
The Trust Asto Sound Bar Speaker is USB-powered and connects via a 3.5mm audio jack. No separate power adapter is needed.

Image: Close-up of the USB power cable and 3.5mm audio cable, highlighting the simple plug-and-play connectivity.
- Power Connection: Connect the USB cable from the sound bar to an available USB port on your computer, laptop, or a USB wall adapter (not included). The speaker draws power directly from the USB connection.
- Audio Connection: Connect the 3.5mm audio jack from the sound bar to the audio output port (usually green) on your computer, laptop, or other audio source.
3. Audio Source Options
The sound bar supports various audio input configurations:
- Option 1: Device with 2 separate 3.5mm audio connections (e.g., Desktop PC):
Connect the sound bar's 3.5mm cable to the green audio output jack on your device. If your sound bar cable has separate green (audio out) and pink (microphone in) plugs, connect both to the corresponding ports on your PC.
- Option 2: Device with 2 RCA (red and white) audio connections (e.g., TV or DVD player):
You will need an RCA to 3.5mm adapter cable (not included). Connect the RCA ends to your device's audio output and the 3.5mm end to the sound bar's audio input.
- Option 3: Device with a combined 3.5mm audio connection (e.g., Laptop, Smartphone):
Connect the sound bar's 3.5mm audio jack directly to the combined audio port on your device. If your sound bar cable has separate audio and mic plugs, you may need a 3.5mm TRRS splitter (not included) to use both functions with a combined port.
Operating Instructions
Once connected, operating your Trust Asto Sound Bar Speaker is straightforward.
1. Power On/Off and Volume Control

Image: Front view of the sound bar, highlighting the large, illuminated volume control knob and the headphone/microphone jacks.
- Power: The large, illuminated button on the front of the sound bar serves as the power switch. Press it to turn the speaker on or off. The illumination indicates the power status.
- Volume: Rotate the large knob on the front of the sound bar clockwise to increase the volume and counter-clockwise to decrease it.
2. Headphone and Microphone Connections

Image: Detailed close-up of the headphone and microphone input jacks located conveniently on the front panel of the sound bar.
For private listening or voice communication, use the dedicated ports on the front of the sound bar:
- Headphone Jack: Plug your headphones into the port marked with a headphone icon. This will mute the sound bar's speakers and route audio to your headphones.
- Microphone Jack: Plug your microphone into the port marked with a microphone icon for voice input.
3. Computer Audio Settings
For optimal performance with a computer, ensure the sound bar is selected as the default audio device:
- Windows: Right-click the speaker icon in the system tray, select "Sound settings" or "Playback devices." Choose the Trust Asto Sound Bar as your default playback device.
- macOS: Go to System Preferences > Sound > Output. Select the Trust Asto Sound Bar from the list of output devices.
- Adjust the system volume on your computer in addition to the sound bar's physical volume knob for fine-tuning.
Maintenance
Proper care and maintenance will ensure the longevity and optimal performance of your sound bar.
- Cleaning: Use a soft, dry, lint-free cloth to clean the exterior of the sound bar. Do not use abrasive cleaners, waxes, or solvents as they may damage the finish.
- Dust: Regularly dust the speaker grille and control knob to prevent dust buildup, which can affect sound quality and component lifespan.
- Environment: Avoid exposing the sound bar to extreme temperatures, humidity, direct sunlight, or excessive dust. Keep it away from liquids.
- Handling: Handle the sound bar with care. Do not drop it or subject it to strong impacts.
Troubleshooting
If you encounter issues with your Trust Asto Sound Bar Speaker, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from speaker |
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| Sound is distorted or unclear |
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| Microphone not working |
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Specifications
| Brand | Trust |
| Model Name | Asto Soundbar Lautsprecher für PC |
| Item Model Number | 21046 |
| Speaker Type | Soundbar |
| Connectivity Technology | Wired (USB, 3.5mm Audio Jack) |
| Power Source | USB |
| Speaker Maximum Output Power | 12 Watts (Peak) / 6 Watts (RMS) |
| Audio Output Mode | Stereo (2.0 Channel) |
| Frequency Response | 20.2 Hz |
| Compatible Devices | PC, Laptop, Mac, TV |
| Color | Black/Silver |
| Material | Metal |
| Product Dimensions | 2.95"H (Height is given, full dimensions not explicitly listed but implied by "soundbar") |
| Item Weight | 1.54 pounds (700 Grams) |
| Included Components | Soundbar |
| UPC | 740617253719 |
Warranty and Support
The Trust Asto Sound Bar Speaker comes with a Limited Warranty provided by Trust. For specific warranty terms, duration, and claim procedures, please refer to the warranty information included with your purchase or visit the official Trust website.
For technical support, troubleshooting assistance beyond this manual, or inquiries about replacement parts, please contact Trust customer support directly. You can usually find contact information on the manufacturer's website or in the product packaging.
Manufacturer: Trust





