1. Introduction
Thank you for choosing the Sunbuck HiFi Stereo Digital Bluetooth Amplifier. This manual provides essential information for the safe and efficient operation of your 999BT or 555BT amplifier. Please read it thoroughly before use and retain it for future reference.
Important Voltage Warning:
For US Plug models, the voltage is 110V. For EU Plug models, the voltage is 220-240V. Machines with a voltage range of 220-240V are compatible with voltages below 240V. Please ensure you select the appropriate specification according to your country's voltage to prevent damage to the amplifier.
2. Safety Information
- Do not expose this appliance to rain or moisture.
- Do not open the amplifier casing; refer all servicing to qualified personnel.
- Ensure proper ventilation around the unit to prevent overheating.
- Disconnect the power plug from the outlet if the unit is not in use for extended periods.
- Place the amplifier on a stable, level surface.
- Keep out of reach of children.
3. Package Contents
Upon unpacking, please ensure all items are present:
- 1 x Sunbuck AV-999BT or AV-555BT Audio Power Amplifier
- 1 x Remote Control
- 1 x FM Antenna
- 1 x User Manual
- 1 x 32GB USB Card (gift)
If any items are missing or damaged, please contact your retailer.
4. Product Overview
The Sunbuck 999BT/555BT series are versatile HiFi stereo digital Bluetooth amplifiers designed for home theater, karaoke, and general audio applications. They feature a dual dynamic screen, multiple input options, and robust power output.
4.1 Front Panel Features (AV-999BT)
- Power Switch
- Mic Reverb Delay
- Mic Reverb Volume
- Mic Bass Adjustment
- Mic Treble Adjustment
- Wired Mic Socket (MIC1)
- Wireless Mic Socket (MIC2)
- Wireless Mic Volume Adjustment
- Music Bass Adjustment
- Music Treble Adjustment
- Left and Right Balance
- EQ (Equalizer)
- Loop Playback
- Previous Song
- Play/Pause
- Next Song
- Function Selection
- SD Card Slot
- USB Disk Socket
4.2 Front Panel Features (AV-555BT)
- Power Switch
- Mic Reverb Delay
- Mic Reverb Volume
- Mic Bass Adjustment
- Mic Treble Adjustment
- Wired Mic Socket (MIC1)
- Wireless Mic Socket (MIC2)
- Wireless Mic Volume Adjustment
- Music Bass Adjustment
- Music Treble Adjustment
- Left and Right Balance
- Loop Playback
- Previous Song
- Play/Pause
- Next Song
- Function Selection
- SD Card Slot
- USB Disk Socket
4.3 Rear Panel Interfaces (Both Models)
The rear panel provides various connection points:
- Radio Antenna Interface: For connecting the FM antenna.
- Bluetooth Antenna: For stable Bluetooth connection.
- Audio Output: Can be connected with active subwoofer and active speakers. Includes Surround 1, Center, and Surround 2 outputs.
- Speaker Output: Group A and Group B speaker interfaces.
- Fan: Cooling fan.
- Power Supply: AC 110V or 220-240V input (depending on model/region).
- Power Point: Main power input.
4.4 Internal Components
Key internal components include:
- Ring copper large transformer: Provides continuous power.
- Built-in mute fan: For cooling.
- Voltage safety fuse: For protection.
- 4x3300 filtering capacitors: For stable power delivery.
- 4x5198 Toshiba amplification tubes: For audio amplification.
- Built-in 5.0 Bluetooth module.
- Pure aluminum radiator: For heat dissipation.
- Switch on/off Protective relay.
5. Setup Guide
Follow these steps to set up your amplifier:
5.1 Power Connection
- Ensure the amplifier's power switch is in the OFF position.
- Connect the power cord to the Power Point on the rear panel.
- Plug the other end of the power cord into a suitable AC outlet (110V for US Plug, 220-240V for EU Plug).
5.2 Speaker Connection
The amplifier supports connecting two pairs of speakers (Group A and Group B) below 10 inches. Connect your speakers to the corresponding SPEAKER OUTPUT terminals on the rear panel, ensuring correct polarity (+ to + and - to -).
5.3 Audio Input Connection
- AUX Input: Connect external audio sources (e.g., DVD player, CD player, computer) to the AUX input ports on the rear panel using RCA cables.
- USB Disk/SD Card: Insert a USB disk or SD card into the respective slots on the front panel. The amplifier supports MP3 format playback.
5.4 Microphone Connection
- Wired Microphones: Connect wired microphones to the MIC sockets on the front panel.
- Wireless Microphones (555BT only): The 555BT model supports one wireless microphone input.
5.5 Antenna Connection
- FM Antenna: Connect the provided FM antenna (black wire) to the Radio Antenna Interface on the rear panel.
- Bluetooth Antenna: Ensure the Bluetooth antenna on the rear panel is properly positioned for optimal signal reception.
6. Operating Instructions
6.1 Power On/Off
Press the Power switch on the front panel to turn the amplifier ON or OFF.
6.2 Source Selection
Press the MODE button on the front panel or remote control to cycle through input sources: Bluetooth (BLUE), FM Radio, USB, SD Card, AUX.
6.3 Bluetooth Pairing
To connect via Bluetooth 5.0:
- Press the MODE button repeatedly until the screen displays "BLUE" mode.
- On your mobile device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "BT" from the list of devices to pair.
- Once connected, you can stream audio wirelessly to the amplifier.
6.4 FM Radio Operation
To use the FM radio:
- Ensure the FM antenna is connected to the rear panel.
- Press the MODE button until the screen displays "FM" mode (numbers will appear).
- The first time you use it, press the Play button to automatically search for radio stations and save them.
- Use the Previous/Next buttons to navigate through saved stations.
6.5 Microphone Usage
- Adjust Mic Reverb Delay, Mic Reverb Volume, Mic Bass, and Mic Treble using the dedicated knobs on the front panel.
- Adjust individual microphone volumes for optimal sound.
6.6 Volume, Treble, Bass Control
- Use the main MUSIC VOL knob to adjust the overall music volume.
- Use the MUSIC BASS and MUSIC TREBLE knobs to fine-tune the audio output.
- The Left and Right Balance knob allows you to adjust the audio balance between the left and right channels.
6.7 Remote Control
The included remote control allows for convenient operation of all amplifier functions from a distance.
Video: Demonstration of the Sunbuck AV-999BT amplifier in operation, showcasing its dynamic screen and audio output.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or aerosols.
- Ventilation: Ensure the ventilation openings are clear of dust and debris. The built-in mute fan helps maintain optimal operating temperature.
- Storage: If storing the amplifier for an extended period, disconnect it from power and store it in a cool, dry place.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Power outlet faulty; Power switch off. | Check power cord connection; Test outlet with another device; Turn power switch ON. |
| No sound output | Incorrect input source selected; Speaker wires loose; Volume too low; Mute activated. | Select correct input source; Check speaker connections; Increase volume; Deactivate mute. |
| Bluetooth not connecting | Amplifier not in Bluetooth mode; Device too far; Interference. | Ensure amplifier is in "BLUE" mode; Move device closer; Reduce interference. |
| Poor FM radio reception | Antenna not connected or poorly positioned; Weak signal. | Connect FM antenna securely; Adjust antenna position; Perform auto-scan again. |
| Microphone not working | Microphone not connected; Volume too low; Faulty microphone. | Check microphone connection; Increase microphone volume; Test with another microphone. |
9. Specifications
| Feature | AV-999BT | AV-555BT |
|---|---|---|
| Power Amplifier Type | AV Power Amplifier | |
| Material | Metal | |
| Color | Black | |
| Channels | 7.0 Channel (6.1) | 5.0 Channel |
| Max Power | 4000W (Above 200W per channel) | 2500W |
| Rated Power | 400W | Main channel 250W+250W, surround 100W+100W, center 100W |
| Voltage | AC110V-240V/50Hz (Region dependent) | |
| Signal to Noise Ratio | ≥90dB | |
| Standard Impedance | 4 to 16Ω | |
| Rated Frequency | 20Hz-20KHz (+/-10dB) | |
| Total Harmonic Distortion | ≤ 0.5% (Normal working conditions) | |
| Input Sensitivity | 150mV | 200MV (+-30MV) |
| Recording Level Output | ≈1V | ≈1V |
| Auxiliary Level Output | ≈1V | ≈1V |
| Microphone Input | 3-way (wired) | 2-way wired, 1-way wireless |
| Bluetooth Version | 5.0 | |
| Features | Dual dynamic screen, FM Radio, Remote Control, USB/SD Card Playback, Karaoke with reverb, EQ button (999BT) | |
| Dimensions (L x W x H) | 430mm x 310mm x 130mm | 430mm x 240mm x 110mm (including machine feet) |
| Net Weight | 7.5kg | 4.5kg |
10. User Tips
- For optimal sound quality, ensure all speaker and audio input cables are securely connected.
- When using the FM radio, experiment with the antenna placement to find the best reception.
- If you experience any issues, refer to the troubleshooting section before contacting support.
11. Warranty and Support
Your Sunbuck amplifier comes with a standard manufacturer's warranty. Please retain your proof of purchase for any warranty claims. For technical support or service inquiries, please contact your retailer or the official Sunbuck customer service channels.
