Introduction
Thank you for choosing the SORDA Portable Bluetooth Karaoke Machine SD-518. This manual provides essential information for the safe and efficient operation of your new device. Please read it thoroughly before use and keep it for future reference. This versatile karaoke system is designed for both adults and kids, featuring wireless microphones, dynamic LED lights, and multiple connectivity options for various events and parties.
What's in the Box
Carefully unpack your SORDA Karaoke Machine and ensure all items listed below are present and in good condition:
- 1 x Karaoke Machine
- 2 x Wireless Microphones
- 1 x Shoulder Strap
- 1 x Auxiliary Cable
- 1 x Type-C Charging Cable
- 1 x User Manual (this document)

Image: All components included in the SORDA SD-518 package, including the karaoke machine, two wireless microphones, shoulder strap, AUX cable, and Type-C charging cable.
Product Overview
The SORDA SD-518 is a portable karaoke system designed for high-quality audio and entertainment. It features a robust speaker with a 4-inch woofer and two 1.6-inch tweeters for clear sound and deep bass. The unit includes two wireless microphones with individual controls for volume, echo, and voice effects. Its compact design, integrated handle, and detachable shoulder strap make it easy to transport. Dynamic LED lights enhance the party atmosphere.

Image: Front view of the SORDA SD-518 karaoke machine with two microphones docked, highlighting the control panel and speaker.

Image: Close-up view of the two wireless microphones, showing their individual volume and echo controls.
Setup
1. Charging the Unit and Microphones
Before first use, fully charge the karaoke machine and both wireless microphones. The main unit has a built-in rechargeable battery providing 6+ hours of playing time after a 2-hour charge. Microphones can be charged by placing them in their designated slots on the main unit or via their individual Type-C ports.

Image: Illustration showing two ways to charge the microphones: by docking them in the speaker's charging slots or by connecting them directly via a Type-C cable.
2. Power On and Bluetooth Pairing
- Locate the ON/OFF switch on the back of the karaoke machine and slide it to the 'ON' position.
- The machine will automatically enter Bluetooth pairing mode, indicated by a flashing LED light.
- On your smartphone, tablet, or other Bluetooth-enabled device, search for 'SD-518' in the Bluetooth settings and connect. A confirmation sound will indicate successful pairing.

Image: Graphic illustrating the Bluetooth 5.3 chip, emphasizing stable and clear audio connection.
3. Microphone Connection
The two wireless microphones are pre-paired with the main unit. Simply turn on each microphone using its power button. They will automatically connect to the karaoke machine.
Video: Official product video demonstrating the SORDA SD-518 Karaoke Machine, including its features and ease of use.
Operating Instructions
1. Basic Playback Controls
Use the buttons on the top panel of the karaoke machine to control music playback:
- MODE: Switch between Bluetooth, AUX, and U Disk modes.
- V-/Previous: Short press for previous track, long press to decrease volume.
- Play/Pause: Play or pause the current track.
- V+/Next: Short press for next track, long press to increase volume.

Image: Detailed view of the karaoke machine's control panel, with numbered buttons indicating functions like next/volume+, pause/play, previous/volume-, mode, handle LED change, speaker LED change, echo adjustment, and 4 fun magic sounds.
2. Microphone Controls and Voice Effects
Each wireless microphone has its own set of controls:
- Volume: Use the VOL +/- buttons to adjust microphone volume.
- Echo: Use the ECH +/- buttons to adjust the echo effect.
- Voice Change: Press the 'Voice' button on the microphone to cycle through 4 fun magic voice effects (Original, Female to Male, Male to Female, Monster, Doll).
- Accompaniment: Press the microphone icon button to toggle accompaniment mode.

Image: Features of the all-in-one microphone, including multifunction shortcut keys, 360-degree full-range sound pickup, and the 4 fun magic sound options.
Video: A user review demonstrating the microphone features, including voice change effects and sound quality.
3. Dynamic LED Lights
The karaoke machine features two rings of LED lights that pulse to the music, creating a vibrant party atmosphere. You can control the lights:
- LED1: Press to change the light mode on the handle.
- LED2: Press to change the light mode on the speaker.
- Turn Off Lights: Long-press the 'LED' button to turn off the lights.

Image: Visual representation of the karaoke machine displaying various vibrant LED lighting combinations.
Video: A user demonstrating the PA system with its shoulder strap and party lights, showcasing the portability and light effects.
4. Multiple Connection Options
In addition to Bluetooth, the SD-518 supports various other connection methods:
- USB: Insert a USB drive into the USB port to play music directly.
- AUX In: Connect external audio devices (e.g., TV, computer) using the provided AUX cable.
- AUX Out: Connect to another speaker via AUX output for true stereo sound and expanded audio.

Image: Close-up of the connection ports on the karaoke machine, including USB, AUX In, and AUX Out.

Image: The karaoke machine connected to another speaker using the AUX-out feature, demonstrating expanded sound capabilities for outdoor events.
Maintenance
To ensure the longevity and optimal performance of your SORDA Karaoke Machine, follow these maintenance guidelines:
- Cleaning: Wipe the unit and microphones with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: For best battery life, avoid fully discharging the unit frequently. Charge it regularly, even if not in use for extended periods.
- Water Exposure: This device is not waterproof. Avoid exposure to water or high humidity.
Troubleshooting
If you encounter any issues with your karaoke machine, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Battery is low or depleted. | Connect the unit to a power source using the Type-C charging cable and allow it to charge. |
| Bluetooth not connecting | Device is out of range or not in pairing mode. | Ensure the karaoke machine is in Bluetooth mode and within 10 meters of your device. Restart both devices and try pairing again. |
| Microphone not working | Microphone is off or battery is low. | Turn on the microphone. Charge the microphone if its battery indicator is low. Ensure it's within range of the main unit. |
| Sound distortion/feedback | Microphone too close to speaker or volume too high. | Increase distance between microphone and speaker. Lower microphone volume or echo level. |
Specifications
| Feature | Detail |
|---|---|
| Brand | SORDA |
| Model Name | SD-518 |
| Output Power | 10W |
| Frequency Response | 100Hz - 18KHz |
| Power Supply | 3.7V/3000mAh Battery |
| Loudspeaker Size | 4 inch |
| Connectivity Technology | Bluetooth 5.3, Auxiliary, USB |
| Item Weight | 3.75 Pounds |
| Item Dimensions (D x W x H) | 4.72"D x 9.02"W x 8.66"H |
| Included Components | 1 Karaoke Machine, 1 Type-C Cable, 2 Wireless Microphones, Auxiliary Cable, Shoulder Strap |
Warranty and Support
The SORDA Portable Bluetooth Karaoke Machine SD-518 comes with a 12-month warranty. If any issues arise with your product, please contact SORDA customer service via Amazon for professional support. We are committed to ensuring your satisfaction.
For further assistance or inquiries, please refer to the contact information provided with your purchase or visit the official SORDA store on Amazon.





