Introduction
Thank you for choosing the PPMIC Karaoke Machine D51. This portable Bluetooth speaker with wireless microphones is designed to provide high-quality audio and entertainment for various occasions. Please read this manual carefully to ensure proper setup, operation, and maintenance of your device.
What's in the Box
Verify that all items are present in the package:
- 1 × Karaoke Machine
- 2 × Wireless Microphones
- 1 × Power Cable (Note: Power Adapter not included)
- 1 × Auxiliary Cable
- 1 × Carrying Strap
- 1 × User Manual

Image: Package contents of the PPMIC Karaoke Machine D51.
Setup
1. Charging the Karaoke Machine
Connect the provided power cable to the charging port on the karaoke machine. Use a compatible 5V power adapter (not included) to charge the device. A full charge takes approximately 2 hours and provides up to 24 hours of playtime.
2. Powering On/Off
Press and hold the power button on the karaoke machine to turn it on or off.
3. Microphone Setup
The two wireless microphones are designed for automatic pairing with the karaoke machine. Simply power on the microphones, and they should connect automatically. Ensure microphones are charged for optimal performance.
4. Bluetooth Connection
Once the karaoke machine is powered on, it will automatically enter Bluetooth pairing mode. On your smartphone, tablet, or other Bluetooth-enabled device, search for "PPMIC D51" (or similar name) in the Bluetooth settings and select it to connect. A successful connection will be indicated by an audible prompt.

Image: The karaoke machine showcasing its Bluetooth 5.3 capability.
Operating Instructions
1. Playing Music
After connecting via Bluetooth, you can play music from your connected device. Adjust the volume using the controls on the karaoke machine or your connected device.
2. Mode Switching
Press the 'M' (Mode) button on the control panel to switch between available input modes, such as Bluetooth, TF card, or Auxiliary input.
Video: Demonstrating how to switch modes on the PPMIC Karaoke Machine D51 using the 'M' button.
3. Using the Wireless Microphones
- Voice Changing Effects: The microphones feature 6 magical sound effects. Press the dedicated button on the microphone to cycle through these effects.
- Echo Effect: Adjust the echo level directly on the karaoke machine's control panel for desired vocal enhancement.
- Volume Control: Adjust microphone volume using the controls on the microphone itself or the main unit.

Image: Wireless microphones with options for professional sound, original sound, and three magic voice effects.
4. Light Effects
The karaoke machine features integrated light-up speakers. Press the light button on the control panel to cycle through different lighting modes or turn them off.

Image: The karaoke machine displaying its dynamic light effects and powerful sound output.
Maintenance
1. Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure all ports are free from dust and debris.
2. Water Resistance
The device is IPX5 waterproof, meaning it is resistant to low-pressure water jets from any direction. Do not submerge the device in water or expose it to high-pressure water streams.
3. Storage
Store the karaoke machine in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
Troubleshooting
- No Power: Ensure the device is fully charged. Connect the power cable to a compatible 5V power adapter (not included) and a power source.
- No Sound: Check the volume levels on both the karaoke machine and your connected device. Ensure Bluetooth is properly connected.
- Microphone Not Working: Ensure microphones are powered on and charged. They should automatically pair with the main unit. If not, try restarting both the machine and microphones.
- Bluetooth Disconnection: Ensure your device is within the Bluetooth range (approximately 10 meters or 33 feet). Avoid obstacles that may interfere with the signal.
- Distorted Sound: Reduce the volume if the sound is distorted. Ensure the audio source is of good quality.
Specifications
| Feature | Detail |
|---|---|
| Brand | PPMIC |
| Model Name | D51 |
| Special Features | Adjustable Microphone Sensitivity, Echo Effect, Light Up Speaker, Lightweight, Voice Changer |
| Color | Black |
| Recommended Uses | Home Parties, Outdoor Gatherings |
| Power Source | Battery Powered |
| Connector Type | 3.5 mm Jack, USB Type C |
| Connectivity Technology | Auxiliary, Bluetooth, USB |
| Bluetooth Version | 5.3 |
| Compatible Devices | Gaming Console, Laptop, Pad, Smartphone, Television |
| Item Dimensions (D x W x H) | 5.2"D x 12.4"W x 7.5"H |
| Battery Playtime | Up to 24 hours (after 2 hours charging) |
| Water Resistance | IPX5 |
Warranty and Support
Warranty Information
PPMIC products are covered by a limited warranty. Please refer to the warranty card included in your package or visit the official PPMIC website for detailed warranty terms and conditions.
Customer Support
For technical assistance, troubleshooting, or any questions regarding your PPMIC Karaoke Machine D51, please contact PPMIC customer support through their official website or the contact information provided in your product documentation.

