Introduction
Thank you for purchasing the BabYoung A77 Portable Bluetooth Speaker. This manual provides detailed instructions on how to set up, operate, and maintain your speaker to ensure optimal performance and longevity. Please read this manual thoroughly before using the product and keep it for future reference.

The BabYoung A77 Portable Bluetooth Speaker, featuring a sleek design with vibrant LED lights and a convenient carry handle.
Product Overview
Components and Controls

Front and top panel controls and ports of the BabYoung A77 speaker, with numbered indicators for easy identification.
- OFF/ON: Power switch for turning the speaker on or off.
- TF Card: Slot for inserting a TF (MicroSD) card for music playback.
- USB: USB port for connecting a USB flash drive for music playback.
- Socket for 3.5mm Audio Cable (AUX): Input for connecting external audio devices via a 3.5mm AUX cable.
- Charging Port: USB Type-C port for charging the speaker's internal battery.
- 6.5mm Wired Microphone Socket: Input for connecting a wired microphone.
- Last Song: Button to go to the previous track or station.
- Pause/Play: Button to play or pause audio playback. Long press in FM mode to auto-scan stations.
- Next Song: Button to go to the next track or station.
- MODE: Button to switch between input modes (Bluetooth, FM, TF Card, USB, AUX).
- Lights OFF/ON: Button to toggle the LED colorful lights on or off.
- Equalizer (EQ): Button to cycle through different equalizer sound effects.
- REC: Record button (functionality may vary).
- MIC: Microphone volume control.
- Adjust the Volume: Rotary knob to increase or decrease the main volume.
- Display Screen: Digital display showing current mode, volume, or track information.
Key Features
- Powerful Audio Output: 60W total output with a 30W bass speaker (subwoofer) and two 15W tweeters for heavy bass and clear stereo sound.
- Bluetooth 5.0 Connectivity: Fast and stable wireless connection up to 100ft range, compatible with various Bluetooth-enabled devices.
- Multi-functional Playback: Supports FM radio, TF Card, USB disk, and AUX input.
- Dynamic LED Lights: Built-in colorful LED lights to enhance the party atmosphere, with an on/off control button.
- EQ Function: Adjustable equalizer settings to customize sound effects for different music styles.
- Long-lasting Battery: Integrated 10000 mAh rechargeable lithium battery providing 4-10 hours of playtime depending on volume.
- Portable Design: Features a hand-held pull ring for easy transport and a stand holder for mobile devices.
- Remote Control: Full-function remote control for convenient operation.
- Microphone Input: 6.5mm microphone jack for karaoke or public speaking.
Setup
Initial Charging
Before first use, fully charge the speaker. Connect the provided USB Type-C cable to the charging port (5) on the speaker and the other end to a compatible USB power adapter (not included). The display screen (16) may indicate charging status. A full charge typically takes approximately 10 hours.
Powering On/Off
To power on the speaker, slide the OFF/ON switch (1) to the "ON" position. To power off, slide the switch back to the "OFF" position.
Operating Instructions
Bluetooth Connection
- Turn on the speaker. It will automatically enter Bluetooth pairing mode, indicated by "bt" flashing on the display screen (16) and an audible prompt.
- Enable Bluetooth on your device (smartphone, tablet, laptop, etc.).
- Search for "A77" in your device's Bluetooth settings and select it to pair.
- Once successfully connected, the "bt" indicator will stop flashing, and you will hear a confirmation sound.
- You can now play audio from your device through the speaker.

The BabYoung A77 speaker supports various connection methods, including Bluetooth 5.0 for fast and stable wireless audio streaming.
FM Radio Operation
- Press the MODE button (10) to switch to FM radio mode.
- Long press the Pause/Play button (8) to initiate an automatic search for available FM stations. The speaker will scan and save all found stations.
- Use the Last Song (7) and Next Song (9) buttons to navigate between saved stations.
- Alternatively, use the remote control to manually input a specific radio station frequency.
TF Card / USB Playback
- Insert a TF card into the TF Card slot (2) or a USB flash drive into the USB port (3).
- The speaker will automatically detect the storage device and begin playing audio files. If not, press the MODE button (10) to select the correct input.
- Use the Last Song (7), Pause/Play (8), and Next Song (9) buttons to control playback.
AUX Input
- Connect one end of the provided 3.5mm AUX cable to the Socket for 3.5mm Audio Cable (4) on the speaker.
- Connect the other end to the audio output jack of your external device (e.g., TV, computer, MP3 player).
- Press the MODE button (10) to switch to AUX input mode.
- Audio from your external device will now play through the speaker. Control playback from your external device.
Microphone Usage
Connect a 6.5mm wired microphone (not included) to the 6.5mm Wired Microphone Socket (6). Adjust the microphone volume using the MIC control (14).
EQ Sound Effects
Press the Equalizer (EQ) button (12) to cycle through different preset sound effects, allowing you to optimize the audio for various music genres or personal preferences.

The BabYoung A77 speaker offers EQ sound effects to enhance your listening experience for various music styles.
LED Colorful Lights
Press the Lights OFF/ON button (11) to turn the colorful LED lights on or off according to your preference.
Remote Control
The included remote control allows for convenient operation of various speaker functions from a distance, including power, mode selection, volume adjustment, track control, EQ settings, and LED light control.

The BabYoung A77 speaker comes with a remote control for convenient operation, alongside its compact dimensions and long-lasting battery.
Charging and Battery
The speaker is equipped with a built-in 10000 mAh rechargeable lithium battery. To charge, connect the USB Type-C cable to the charging port (5) and a 5V USB power source. The charging indicator on the display will show the charging status. A full charge provides approximately 4 to 10 hours of playtime, depending on the volume level and usage.
It is recommended to fully charge the speaker before extended periods of non-use to preserve battery health.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the speaker's exterior. Do not use abrasive cleaners, waxes, or solvents.
- Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Water Resistance: This speaker is not waterproof. Avoid exposing it to water or excessive moisture.
- Handling: Handle the speaker with care. Avoid dropping it or subjecting it to strong impacts.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Battery is depleted. | Connect the speaker to a power source using the USB Type-C cable and allow it to charge. |
| Cannot connect via Bluetooth. | Bluetooth is not enabled on the device or speaker is not in pairing mode. Speaker is too far from the device. | Ensure Bluetooth is enabled on your device and the speaker is in Bluetooth pairing mode ("bt" flashing). Move the device closer to the speaker (within 100ft/30m). Try unpairing and re-pairing. |
| No sound from speaker. | Volume is too low. Incorrect input mode selected. Audio source issue. | Increase the volume on both the speaker and your connected device. Press the MODE button (10) to select the correct input source (Bluetooth, FM, AUX, TF, USB). Ensure the audio source is playing correctly. |
| FM radio reception is poor. | Weak signal. | Extend the antenna fully. Reposition the speaker to find a stronger signal. |
| Remote control not working. | Battery depleted or line of sight blocked. | Replace the remote control battery. Ensure there are no obstructions between the remote and the speaker's sensor. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | A77 |
| Brand | BabYoung |
| Speaker Type | Subwoofer, Tweeter, Portable |
| Speaker Maximum Output Power | 80 Watts (Peak), 60W RMS |
| Subwoofer Diameter | 4 Inches |
| Tweeter Diameter | 3 Inches (x2) |
| Wireless Communication Technology | Bluetooth 5.0, FM |
| Bluetooth Range | Up to 30.48 Meters (100 feet) |
| Connectivity Protocol | Bluetooth, Aux in, USB, FM |
| Power Source | Battery Powered |
| Battery Capacity | 10000 mAh Lithium Polymer |
| Charging Time | Approx. 10 Hours |
| Playtime | 4-10 hours (varies by volume) |
| Product Dimensions | 7"D x 11.5"W x 5.5"H |
| Item Weight | 5.4 Pounds |
| Material | Wood, Plastic |
| Included Components | A77 Bluetooth Speaker, Remote Control, 3.5mm Aux Cable, USB Type-C Cable, User Manual |
Warranty and Support
BabYoung products are designed and manufactured to the highest quality standards. For any questions, technical support, or warranty inquiries, please refer to the contact information provided on the product packaging or the official BabYoung website. Please retain your proof of purchase for warranty service.




