Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your LONPOO 128b-EU Micro HiFi Compact Stereo System. Please read this manual thoroughly before using the product to ensure proper function and to maximize your listening experience.
Product Features
- Top-loading CD Player compatible with CD/CD-R/CD-RW discs.
- Bluetooth connectivity for wireless audio streaming.
- FM Radio (87.5 - 108 MHz) with auto scan and 30 preset stations.
- USB port for MP3/WMA playback.
- 3.5mm AUX-in for connecting external audio devices.
- 30W (2 x 15W RMS) / 50W max audio output with DSP technology.
- Memory function and 3 repeat modes (One/All/Random).
- 5 Equalizer modes (Flat, Classic, Rock, Pop, Jazz).
- Compact design with included remote control.
What's in the Box
- 1x LONPOO 128b-EU Micro HiFi Compact Stereo System
- 2x Stereo Speakers
- 1x Remote Control (2 AAA batteries not included)
- 1x User Manual
Setup Instructions
Follow these steps to set up your stereo system:
- Speaker Connection: Connect the speaker wires from the two stereo speakers to the 'Speakers Output' terminals on the back of the main unit. Ensure correct polarity (red to red, black to black).
- Power Connection: Insert the power cord into the 'AC IN' jack on the back of the unit, then plug the other end into a standard wall outlet.
- FM Antenna: Connect the FM antenna to the 'FM Antenna' port on the back. For optimal reception, extend the antenna fully and position it away from other electronic devices.
- Initial Power On: Press the 'Power' button on the unit or the remote control to turn on the system.

Figure 1: Rear panel connections for easy setup. (1) Speakers Output, (2) AC IN, (3) Power on/off, (4) FM Antenna, (5) AUX in.

Figure 2: Detailed diagram of the front and back panels, highlighting controls and connection points.
Operating Instructions
General Controls
The system can be operated using the buttons on the front panel or the included remote control. The main controls include:
- Power Button: Turns the unit on or off.
- MODE/EQ Button: Switches between input sources (CD, Bluetooth, FM, USB, AUX) and cycles through equalizer presets.
- Play/Pause/Scan Button: Starts/pauses playback or initiates FM auto-scan.
- Stop/Repeat/Program Button: Stops playback, cycles through repeat modes (One/All/Random), or programs CD tracks.
- Previous/Fast Backward Button: Skips to the previous track or fast rewinds.
- Next/Fast Forward Button: Skips to the next track or fast forwards.
- Volume Knob: Adjusts the master volume.
- USB Port: For connecting USB storage devices.
- Headphone Jack: For private listening with 3.5mm headphones.

Figure 3: The Micro HiFi System's display and controls, showing equalizer, repeat, and memory functions.
CD Playback
- Press the 'MODE' button to select CD mode.
- Open the top-loading CD door.
- Place a CD (CD/CD-R/CD-RW) onto the spindle with the label side facing up.
- Close the CD door. The system will read the disc, and the track number and playback time will appear on the display.
- Press the 'Play/Pause' button to start playback.
- Use the 'Previous' and 'Next' buttons to skip tracks.
- Press the 'Repeat' button to cycle through repeat modes: Repeat One, Repeat All, or Random Play.

Figure 4: Top-loading CD player in operation, supporting CD/CD-R/CD-RW discs.
Bluetooth Mode
- Press the 'MODE' button to select Bluetooth mode. The display will show "BT" and flash, indicating it's ready for pairing.
- On your smartphone, tablet, or other Bluetooth-enabled device, enable Bluetooth and search for available devices.
- Select "LONPOO 128b-EU" from the list of devices.
- Once paired, the display will stop flashing, and you can stream audio from your device to the stereo system.

Figure 5: Bluetooth connectivity, allowing wireless audio streaming from compatible devices.
FM Radio
- Press the 'MODE' button to select FM Radio mode.
- To auto-scan and save stations: Press and hold the 'Play/Pause/Scan' button. The system will automatically scan for and save up to 30 available FM stations.
- To manually tune: Use the 'Previous' and 'Next' buttons for fine-tuning or to navigate through saved presets.

Figure 6: FM Radio function, showing a frequency display and indicating good reception.
USB Playback
- Insert a USB flash drive containing MP3 or WMA audio files into the USB port on the front panel.
- Press the 'MODE' button to select USB mode. The system will automatically begin playing the audio files.
- Use the 'Previous', 'Next', 'Play/Pause', and 'Stop/Repeat' buttons to control playback.
AUX-in Mode
- Connect an external audio device (e.g., smartphone, MP3 player) to the 'AUX-in' port on the back of the unit using a 3.5mm audio cable (not included).
- Press the 'MODE' button to select AUX mode.
- Control playback directly from your connected external device. Adjust the volume using the system's volume knob.

Figure 7: All-in-one home stereo system, illustrating its multi-functional audio capabilities.
Equalizer Settings
Press the 'EQ' button (part of the MODE/EQ button) repeatedly to cycle through the available equalizer presets: Flat, Classic, Rock, Pop, and Jazz. Select the setting that best suits your audio preference.
Maintenance
To ensure the longevity and optimal performance of your LONPOO 128b-EU stereo system, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior surfaces of the unit and speakers. Do not use abrasive cleaners, waxes, or solvents as they may damage the finish.
- CD Player Care: Keep the CD compartment clean. If the lens is dirty, use a specialized CD lens cleaner disc. Avoid touching the lens directly.
- Ventilation: Ensure the unit has adequate ventilation. Do not block any ventilation openings.
- Placement: Place the unit on a stable, flat surface away from direct sunlight, heat sources, excessive dust, moisture, or strong magnetic fields.
- Power Off: Always turn off the system and unplug it from the power outlet before cleaning or when not in use for extended periods.
Troubleshooting
If you encounter any issues with your stereo system, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Power outlet not active | Ensure power cord is securely plugged into the unit and a working outlet. |
| No sound | Volume too low; Incorrect input mode; Speakers not connected | Increase volume; Select correct input mode (CD, BT, FM, USB, AUX); Check speaker connections. |
| CD not playing | Disc inserted incorrectly; Disc is dirty or scratched; Disc format not supported | Insert disc correctly (label side up); Clean or replace disc; Ensure disc is CD/CD-R/CD-RW format. |
| Bluetooth not connecting | Device not in pairing mode; Stereo system not in Bluetooth mode; Device too far | Ensure both devices are in pairing mode; Select Bluetooth mode on stereo; Move devices closer. |
| Poor FM reception | Antenna not extended or positioned correctly; Interference | Extend and reposition the FM antenna; Move away from other electronic devices. |
| USB playback issues | USB drive not formatted correctly; Unsupported file format | Ensure USB drive is FAT32 formatted; Check if files are MP3/WMA. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | 128b-EU |
| Power Output | 30W (2 x 15W RMS) / 50W Max |
| Connectivity | Bluetooth, USB, AUX-in |
| CD Compatibility | CD, CD-R, CD-RW |
| USB Audio Formats | MP3, WMA |
| FM Frequency Range | 87.5 - 108 MHz |
| Frequency Response | 20Hz - 20KHz |
| Number of Speakers | 2 (Stereo) |
| Power Source | AC Cable (110-240V/50-60Hz) |
| Product Dimensions (L x W x H) | 42 x 27.9 x 16.5 cm (16.5 x 11 x 6.5 inches) |
| Product Weight | 1.1 kg (2.4 lbs) |
| Manufacturer | LONPOO |
| Country of Origin | China |

Figure 8: Dimensions of the compact stereo system, suitable for various shelf placements.
Warranty Information
The LONPOO 128b-EU Micro HiFi Compact Stereo System comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
Please retain your proof of purchase for warranty claims. For warranty service, please contact customer support as detailed in the Support section.
Customer Support
If you require further assistance, have questions not covered in this manual, or need to make a warranty claim, please contact LONPOO customer support.
For the most up-to-date support information, including contact details and FAQs, please visit the official LONPOO website or refer to the contact information provided with your purchase documentation.





