1. Product Overview
The Nobsound Mini Bluetooth 5.0 Power Amplifier is a compact yet powerful stereo Hi-Fi digital amplifier designed for versatile audio playback. It features multiple input options including AUX, USB, and Bluetooth 5.0, making it compatible with a wide range of audio devices. Its upgraded chip delivers 100W (50W*2) output power, providing clear and robust sound for home or desktop audio systems.
Figure 1: Front-top view of the Nobsound Mini Bluetooth 5.0 Power Amplifier.
2. What's in the Box
Please check the package contents to ensure all items are present:
- 1 x NS-01G Pro Amplifier
- 1 x Power Supply
- 1 x AUX Cable
- 1 x USB Cable
- 1 x RCA Audio Cable
- 1 x Manual
Figure 2: Included accessories and amplifier unit.
3. Setup
3.1 Component Identification
Figure 3: Front Panel Layout - Featuring the Volume Controller, Bluetooth Indicator, USB Sound input, AUX input, and Power Switch.
Figure 4: Rear Panel Layout - Showing DC9V-24V power input and speaker output terminals (compatible with banana plugs or bare wire).
3.2 Connecting Your Amplifier
- Power Connection: Connect the provided power supply to the DC9V-24V IN port on the rear of the amplifier. Plug the power adapter into a suitable wall outlet.
- Speaker Connection: Connect your passive speakers to the speaker output terminals on the rear panel. Ensure correct polarity (+ to + and - to -) for both left (L) and right (R) channels. These terminals support both banana plugs and bare speaker wire.
- Audio Input: Choose one of the following input methods:
- Bluetooth Input: Ensure the amplifier is powered on. The Bluetooth indicator light will flash, indicating it's ready for pairing. On your device (smartphone, tablet, etc.), search for "Nobsound" or "GFJ058NEW" in the Bluetooth settings and connect. The indicator light will turn solid blue once paired.
- AUX Input: Connect your audio source (e.g., MP3 player, TV, CD player) to the AUX 3.5mm input jack on the front panel using the provided AUX cable.
- USB Input: Connect your computer (PC/Mac) to the USB sound port on the front panel using the provided USB cable. No driver installation is typically required for most operating systems. This input allows for lossless audio playback.
Figure 5: The amplifier supports Bluetooth 5.0, AUX, and USB audio inputs.
Figure 6: The USB input is plug-and-play, requiring no drivers for most computers.
4. Operating Instructions
- Power On/Off: Use the ON/OFF switch located on the front panel to power the amplifier on or off.
- Volume Control: Rotate the large knob on the top of the amplifier clockwise to increase volume and counter-clockwise to decrease volume. Adjust to a comfortable listening level.
- Input Selection: The amplifier automatically prioritizes inputs. If multiple inputs are connected, disconnect the unused ones to ensure the desired source is playing. Bluetooth will typically take precedence if paired and active.
Figure 7: The amplifier's mini size makes it suitable for various setups.
Figure 8: Despite its small size, the amplifier delivers up to 100W of output power.
5. Maintenance
To ensure the longevity and optimal performance of your Nobsound Mini Bluetooth 5.0 Power Amplifier, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the exterior of the amplifier. Avoid using harsh chemicals, cleaning solvents, or abrasive materials, as these may damage the finish.
- Ventilation: Ensure the amplifier is placed in a well-ventilated area to prevent overheating. Do not block any ventilation openings.
- Storage: When not in use for extended periods, store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
- Connections: Periodically check all cable connections to ensure they are secure and free from corrosion.
6. Troubleshooting
If you encounter any issues with your Nobsound Mini Bluetooth 5.0 Power Amplifier, please refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound Output |
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| Bluetooth Connection Issues |
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| Distorted Sound |
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| USB Audio Not Working |
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If the problem persists after trying these steps, please contact customer service for further assistance.
7. Specifications
| Specification | Value |
|---|---|
| Brand | Douk Audio |
| Manufacturer | Nobsound |
| Model Number | GFJ058NEW |
| Output Power | 100 Watts (50W x 2) |
| Number of Channels | 2 |
| Bluetooth Version | 5.0 |
| Input Options | AUX (3.5mm), USB, Bluetooth |
| Minimum Supply Voltage | 9 Volts (DC) |
| Maximum Supply Voltage | 24 Volts (DC) |
| Supply Current | 5 Amps |
| Material | Aluminum |
| Item Weight | 15.5 ounces |
| Package Dimensions | 6.61 x 6.38 x 2.52 inches |
| First Available Date | April 11, 2017 |
| ISED Certification Registration Number | 30459-M1PRO |
| ISED Hardware Version Identification Number (HVIN) | M1 PRO |
8. Warranty and Support
Nobsound products are backed by prompt and courteous customer service. If you encounter any issues or have questions regarding your amplifier, please do not hesitate to contact the manufacturer or seller for assistance.
For additional information and support, you may refer to the official user manual PDF: Download User Manual (PDF)