Introduction
The YS203 Bluetooth Karaoke Speaker System is a portable, high-power audio device designed for karaoke, parties, and general music playback. It features Bluetooth 5.0 connectivity, dual wireless microphones, and various sound effects to enhance your vocal performance. This manual provides detailed instructions for setting up, operating, and maintaining your YS203 speaker system.
Package Contents
Please check the box for the following items:
- 1 x YS203 Karaoke Speaker
- 2 x Wireless Microphones
- 2 x USB Charging Cables (for microphones)
- 1 x Auxiliary (AUX) Cable
- 1 x User Manual
- 1 x Thank You Card
Video: Unboxing and overview of the YS203 Karaoke Speaker system components.
Product Overview
Speaker Controls and Ports

Image: Top panel of the YS203 speaker showing control buttons and microphone holders.
- Microphone Holders: Two integrated slots for storing the wireless microphones.
- Control Panel:
- M (Mode): Switches between input modes (Bluetooth, AUX, USB, Micro SD).
- M-/V- (Previous/Volume Down): Short press for previous track, long press for volume down.
- M+/V+ (Next/Volume Up): Short press for next track, long press for volume up.
- Play/Pause: Plays or pauses music playback.
- TONE: Adjusts the tone of the microphone.
- REVERB: Adjusts the reverb effect for the microphone.
- ECHO: Adjusts the echo effect for the microphone.
- VOCAL CUT: Reduces or removes vocals from music tracks.

Image: Rear panel of the YS203 speaker showing various input options.
- AUX Input: For connecting external audio devices via the auxiliary cable.
- USB Port: For playing music from USB drives.
- Micro SD Card Slot: For playing music from Micro SD cards.
- DC 5V Input: For charging the speaker using a Type-C charging cable.
Microphone Controls

Image: Close-up of a wireless microphone showing control buttons.
- Power Button: Turns the microphone on/off.
- VOL+ / VOL-: Adjusts microphone volume.
- EFF Key: Cycles through five voice-changing modes.
Setup Guide
1. Charging the Device
- Speaker: Connect the speaker to a DC 5V-2A power source using the provided Type-C charging cable. The charging time is approximately 1.5 hours.
- Microphones: Connect each microphone to a USB power source using the provided USB charging cables. The microphones can also be charged by placing them in the speaker's holders while the speaker is powered on or charging.
- Initial Charge: If the product has been in prolonged storage or shipping, it may be in a 0% battery state. Charge the device for 4-8 hours to activate the battery and ensure optimal performance.

Image: Wireless microphones charging in the speaker's dedicated slots.
2. Powering On/Off
- Speaker: Press and hold the power button (usually integrated with the Mode button or a dedicated button) on the speaker's control panel to turn it on or off.
- Microphones: Press and hold the power button on each microphone to turn it on or off. The microphones will automatically pair with the speaker when both are powered on.
3. Connecting to Audio Sources
- Bluetooth Connection:
- Turn on your Bluetooth speaker and switch to Bluetooth mode (press the 'M' button until Bluetooth mode is announced).
- On your smartphone, tablet, or smart TV, go to Bluetooth settings and select "YSD Speaker" to connect.
- Once connected, you can play music wirelessly.
- AUX Connection:
- Connect one end of the provided AUX cable to the AUX input port on the speaker.
- Connect the other end to the audio output jack of your external device (e.g., TV, computer, MP3 player).
- Press the 'M' button on the speaker until AUX mode is selected.
- USB/Micro SD Playback:
- Insert a USB drive into the USB port or a Micro SD card into the Micro SD card slot on the speaker.
- The speaker should automatically switch to USB or Micro SD mode and begin playing audio files. If not, press the 'M' button to select the correct mode.
Operating Instructions
Music Playback
- Play/Pause: Press the Play/Pause button on the speaker.
- Volume Adjustment: Long press the M+/V+ button to increase volume, and long press the M-/V- button to decrease volume.
- Track Navigation: Short press the M+/V+ button for the next track, and short press the M-/V- button for the previous track.
Microphone Usage and Sound Effects
- Microphone Volume: Use the VOL+ and VOL- buttons on the microphone to adjust its volume.
- Voice Changing Modes: Press the 'EFF' key on the microphone to cycle through five different voice-changing modes (e.g., deep voice, high-pitched voice, monster voice, baby voice, original voice).
- Speaker Sound Effects: Use the TONE, REVERB, and ECHO buttons on the speaker's control panel to fine-tune the microphone's sound. The system supports reverb and treble/bass 7dB loudness adjustment, and 32 levels of microphone and instrument volume adjustment.
- Vocal Cut: Press the 'VOCAL CUT' button on the speaker to reduce or remove vocals from a playing music track, allowing you to sing along.

Image: The YS203 speaker and microphones set up for a home karaoke experience.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the speaker and microphones. 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: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
- Water Exposure: This product is NOT waterproof. Avoid exposing it to water or high humidity to prevent damage.
Troubleshooting
- Q: The device does not turn on or hold a charge.
- A: The product may have run out of battery during prolonged shipping and entered a 0% battery state. Connect the product to a power source and charge it for 4-8 hours to activate the battery. Ensure you are using a DC 5V-2A charger for the speaker.
- Q: I cannot connect my device via Bluetooth.
- A: Ensure the speaker is in Bluetooth mode (indicated by an audio prompt or display). On your external device, search for "YSD Speaker" in the Bluetooth settings and attempt to pair. Make sure no other devices are currently connected to the speaker.
- Q: The microphones are not working.
- A: Ensure both microphones are fully charged and powered on. They should automatically pair with the speaker. Check the microphone volume levels on both the microphones and the speaker's control panel.
- Q: There is distortion or no sound.
- A: Check all cable connections (if using AUX). Ensure the volume levels on both the speaker and the connected audio source are appropriately set. Try reducing the volume to eliminate distortion. Ensure the speaker is not placed in an overly noisy environment that might interfere with sound quality.
- Q: The voice changing effects are not working.
- A: Ensure the microphone is powered on and connected. Press the 'EFF' key on the microphone to cycle through the available voice-changing modes.
Specifications
| Feature | Specification |
|---|---|
| Model | YS203 (Audio Dual Microphone Mixing Set) |
| Brand | LS |
| Speaker Type | Portable |
| Use | Home, Outdoor Party |
| Sound Output Power | 100W (High Power Sound) |
| Bluetooth Version | 5.0 |
| Transmission Distance | 210M (Note: Actual range may vary based on environment and obstacles) |
| Frequency Range | 20Hz - 20KHz |
| Power Supply Voltage | 5V |
| Power Source | Built-in Lithium Battery, USB |
| Battery Capacity | 7.4V/3000mAh (Polymer Lithium Battery) |
| Playing Time | About 5 hours |
| Charging Time | About 1.5 hours |
| Communication | AUX, Bluetooth |
| Audio Crossover | Full-Range |
| Number of Loudspeaker Enclosure | 2 |
| Cabinet Material | Metal |
| Voice Control | No |
| Waterproof | No |
| Support APP | No |
| Dimensions | 150x150mm (5.91x5.91 inches) |
| Weight | 1450g (3.2 lbs) |
| Certification | CE |

Image: Diagram showing the built-in professional DSP digital audio processing chip with Bluetooth 5.0.

Image: Internal view of the speaker highlighting precision-crafted speaker units for super bass surround sound.
User Tips
- First Use: Upon receiving your YS203, especially after prolonged shipping, ensure to fully charge the speaker and microphones for 4-8 hours to activate the batteries and ensure optimal performance.
- Voice Effects: Experiment with the 'EFF' key on the microphones to discover all five voice-changing modes for added fun during karaoke sessions.
- Sound Customization: Utilize the TONE, REVERB, and ECHO controls on the speaker to personalize your vocal sound. Adjusting the 32 levels of microphone volume can also significantly impact your performance.
- Versatile Playback: Don't forget you can play music not only via Bluetooth but also through AUX, USB drives, and Micro SD cards, offering flexibility for various audio sources.
Warranty and Support
Your YS203 Bluetooth Karaoke Speaker System is designed for durability and performance. In the unlikely event of any issues, please refer to the following:
- Damage During Transit: If the product suffers any damage during transportation, please document it with videos and photos immediately upon receipt. This evidence will be crucial for processing a refund or replacement.
- Technical Support: For any technical questions, operational difficulties not covered in this manual, or warranty claims, please contact the seller's customer service. Provide your product model (YS203) and a detailed description of the issue for prompt assistance.





