Introduction
This user manual provides detailed instructions for the operation and maintenance of your SUPNIU A50 Bluetooth Speaker. Designed for both indoor and outdoor use, this portable speaker offers exceptional sound quality, beat-driven lights, and versatile connectivity options, including two wireless microphones for karaoke.
What's in the Box
- 1 x A50 Bluetooth party speaker
- 2 x Wireless Microphones
- 1 x Remote Control
- 1 x AUX Audio cable
- 2 x USB TYPE-C cable

This image displays the SUPNIU A50 Bluetooth Speaker along with its accessories: two wireless microphones and a remote control, as typically found in the product package.
Features
- Exceptional Sound Quality: Equipped with two 2.5-inch woofers and two 3-inch tweeters, utilizing high-performance processing and high-bass separation technology for clear and powerful sound.
- Portable Design: Features a convenient carrying handle and a 4000mAh rechargeable battery, providing 4-15 hours of playing time depending on volume.
- Beat-Driven Disco Lights: Two acoustic colorful lights change color and dance to the rhythm of the music, offering various lighting effects for dynamic atmosphere.
- Dual Wireless Microphones: Includes two wireless microphones with clear sound quality that automatically pair with the speaker. An additional microphone jack is available.
- Versatile Connectivity: Features Bluetooth 5.0 for stable wireless streaming, and supports AUX, TF card, and USB stick connections.
- FM Radio: Built-in FM radio with automatic or manual channel control.
- Digital Display & Remote Control: Equipped with a digital display and an intelligent remote control for easy operation.

This image highlights the speaker's dynamic, colorful LED lights that synchronize with the music, creating a vibrant party atmosphere.

This diagram illustrates the internal speaker setup, featuring two 2.5-inch woofers and two 3-inch tweeters, contributing to the 60W peak superior sound.
Setup Guide
1. Charging the Speaker
Before first use, fully charge the speaker. Connect the provided USB Type-C cable to the speaker's DC 5V input port and the other end to a compatible USB power adapter (not included). The charging indicator will show the charging status. A full charge typically takes 2-3 hours and provides 4-15 hours of playback depending on volume.
2. Microphone Setup
The two wireless microphones included with your speaker are designed for automatic pairing. Simply switch on the microphones, and they will automatically connect to the speaker, ready for use. Ensure the microphones are charged if they are not responding.

This image shows the two wireless microphones, highlighting their automatic connection feature and indicating typical charging and playing times.
Operating Instructions
1. Power On/Off
Press and hold the Power button on the speaker or the remote control to turn the unit On or Off.
2. Mode Selection
Press the "MODE" button on the speaker or remote control to cycle through available modes: Bluetooth, FM Radio, TF Card, AUX, and USB. The digital display will indicate the current mode.
3. Bluetooth Pairing
- Turn on the speaker. It will automatically enter Bluetooth pairing mode, indicated by "BLUE" on the display.
- Enable Bluetooth on your device (smartphone, tablet, etc.) and search for "A50".
- Select "A50" from the list of available devices to connect. A confirmation sound will indicate successful pairing.
4. Volume and Sound Controls
Adjust the master volume using the main rotary knob on the speaker or the VOL+/- buttons on the remote. The remote also provides dedicated controls for Bass (BA+/-), Treble (TR+/-), Microphone Volume (MIC+/-), and Microphone Echo (EC+/-).

This image provides a clear view of the speaker's front panel, including the digital display, mode selection buttons, and the main volume knob.
5. Lighting Control
Press the light bulb icon button on the remote control to cycle through different lighting effects or to turn the lights off.
6. FM Radio Operation
In FM mode, use the remote control to perform automatic or manual channel searches. Extend the antenna for better reception.
7. USB/TF Card Playback
Insert a USB flash drive or TF/SD card into the respective slot. The speaker will automatically switch to the corresponding mode and begin playing audio files.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the speaker's exterior. Do not use abrasive cleaners or solvents.
- Storage: Store the speaker 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 speaker regularly, even if not in use.
- Water Exposure: This speaker is not waterproof. Avoid exposure to water or high humidity.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Low battery; Power button not pressed correctly. | Charge the speaker fully. Press and hold the Power button for a few seconds. |
| No sound from speaker. | Volume too low; Incorrect mode selected; Device not paired. | Increase volume. Check mode. Re-pair Bluetooth device. |
| Microphones not working. | Microphones not powered on; Not paired; Low microphone battery. | Ensure microphones are switched on. They should auto-pair. Charge microphones if needed. |
| Bluetooth connection unstable. | Device too far from speaker; Obstructions; Interference. | Move device closer to speaker (within 100ft). Remove obstructions. Avoid strong electromagnetic interference. |
| FM radio reception is poor. | Antenna not extended; Weak signal. | Fully extend the FM antenna. Try repositioning the speaker for better signal. |
Specifications
| Feature | Detail |
|---|---|
| Product Type | A50 Bluetooth Speaker |
| Speaker Driver Size | 2.5" x 2 (Woofers) + 3" x 2 (Tweeters) |
| Frequency Response | 80Hz-20KHz |
| Input Voltage | DC 5V |
| Product Dimensions | W115*D195*245mm (4.53 x 7.68 x 9.65 inches) |
| Item Weight | 4.19 pounds |
| Playing Time | Approx. 4-15 hours (depends on playing volume) |
| Battery Capacity | 4000mAh (2 Lithium Ion batteries included) |
| Bluetooth Version | 5.0 |
| Wireless Transmission Distance | Up to 100ft |
| Supported Functions | Bluetooth, MP3 music player, FM radio, TF Card, AUX, USB music player, Remote control, EQ, Karaoke |
Warranty and Support
For warranty information and customer support, please refer to the documentation included with your product or contact SUPNIU customer service directly. Keep your purchase receipt for warranty claims.
Manufacturer: SUPNIU





