1. Product Overview
The Sunbuck 6188BT/326BT series are compact 2.0-channel Hi-Fi karaoke audio amplifiers designed for versatile use in home entertainment, small KTV setups, and background music systems. These amplifiers deliver clear, dynamic sound and offer multiple connectivity options including Bluetooth 5.0, USB/SD card playback, FM radio, and auxiliary input. They also feature dual (6188BT) or quad (326BT) microphone inputs with independent volume and echo control, making them ideal for karaoke performances and voice announcements.
The devices support both household AC power (110V or 220V depending on region/plug type) and vehicle 12V DC power input, providing flexibility for various applications.
Image: Front view of TAV-6188BT amplifier, showcasing key features like Bluetooth, FM Radio, and USB/SD playback.
2. Safety Information
- Ensure the power switch is in the "OFF" position before connecting to power to avoid inrush current damage.
- Connect the power cord to a grounded electrical outlet.
- Observe polarity markings (red = positive, black = negative) when connecting speakers to ensure correct phasing and avoid audio distortion.
- Use the amplifier in a well-ventilated area, away from direct sunlight, moisture, and heat sources.
- Avoid operating the amplifier at maximum volume for extended periods to prevent overheating and component damage.
- If you notice unusual smells, smoke, or noises, immediately turn off the power and disconnect the cord. Do not attempt to repair the unit yourself; contact authorized service personnel.
- **Voltage Warning**: US Plug models are 110V; EU Plug models are 220V-240V. Please select the appropriate specification according to the voltage of your country to avoid burning the amplifier.
3. Package Contents
Please check the box for the following items:
- Audio Power Amplifier (TAV-6188BT or AV-MP326BT) x1
- Remote control x1
- Power Cable x1
- User manual x1
- Warranty card x1
- 32GB USB Card (promotional gift, may vary) x1
Image: Contents included in the product packaging.
4. Product Features
- Built-in Bluetooth 5.0 Connectivity: Seamlessly pairs with smartphones, tablets, and laptops for wireless music streaming with stable connectivity.
- 2.0-Channel Stereo Output: Delivers clear, balanced stereo sound for music, movies, and karaoke performances.
- Dual/Quad Microphone Inputs: Supports two (6188BT) or four (326BT) microphones with independent volume and echo controls, ideal for karaoke and voice announcements.
- Multimedia Playback: Supports direct playback of MP3 audio files from USB flash drives and SD cards.
- FM Radio Function: Built-in FM tuner with auto-scan and manual tuning capabilities, utilizing a telescopic antenna for better reception.
- EQ Adjustment: Treble and bass controls allow customization of the audio output. The 326BT model also features a 5-band EQ mixer function.
- Remote Control: Full-function infrared remote control for convenient operation of input selection, volume, and playback functions.
- Compact Design: Desktop-sized chassis that is easy to install and fits well in various environments.
- Protection Functions: Includes power-off memory playback, switching machine speaker protection, short circuit protection, and overload protection.
- Versatile Power Input: Supports household AC 220V/110V and vehicle 12V DC power input.
Image: TAV-6188BT amplifier highlighting new features and dual power input capability.
5. Controls and Interfaces
5.1 Front Panel Controls (TAV-6188BT shown)
Image: Front panel layout and controls of the TAV-6188BT amplifier.
- Power Indicator Light: Illuminates when the amplifier is powered on.
- Microphone Delay: Adjusts the delay effect for microphone input.
- Bass Adjustment: Controls the low-frequency response for microphone input.
- Treble Adjustment: Controls the high-frequency response for microphone input.
- Equal Loudness Switch: Enhances bass and treble at low volume levels.
- Left and Right Vocal Balance: Adjusts the balance between left and right channels.
- Sound Source Selection: Selects the audio input source.
- SD Interface: Slot for SD card playback.
- LED Display Screen: Shows current input source, FM frequency, and playback status.
- USB Interface: Port for USB flash drive playback.
- Master Volume Knob: Controls the overall audio output level.
- Power Switch: Turns the amplifier on or off.
- Mic Bass/Treble/Reverberation: Individual controls for microphone sound characteristics.
- Mic Volume (MIC1/MIC2): Adjusts the input volume for connected microphones.
- Mic Jack (MIC1/MIC2): Input ports for microphones.
- MP3 Playback Controls (A, B, C, D, E):
- A: MP3 playback
- B: Next song
- C: Radio forward selection
- D: Pause/FM automatic channel selection
- E: Mode switching
5.2 Rear Panel Interfaces
Image: Rear panel connections of the TAV-6188BT amplifier.
- FM ANT: Connection for the telescopic FM antenna.
- AUDIO INPUT (VCD, CD, LINE): RCA input jacks for external audio sources.
- AUDIO OUTPUT (LINE): RCA output jacks for connecting to other audio devices.
- SPEAKER SYSTEM (R, L): Red and black terminals for connecting passive speakers.
- POWER DC12V INPUT: DC input for vehicle 12V power supply.
- POWER SOURCE (~110V/220V): AC input for household power supply.
Image: Rear panel connections and connectable equipment for the AV-MP326BT amplifier.
6. Installation & Connection
6.1 Power Connection
- Ensure the amplifier's power switch is in the "OFF" position.
- Connect the provided power cord to the AC input on the rear panel.
- Plug the other end of the power cord into a grounded electrical outlet (110V or 220V-240V, depending on your model and region).
- For vehicle use, connect a 12V DC power supply to the "POWER DC12V INPUT" terminals on the rear panel.
6.2 Speaker Connection
- Use speaker wires to connect the left (L) and right (R) speaker terminals on the rear panel to your passive speakers.
- Observe polarity markings: Red terminals are positive (+), and black terminals are negative (-). Ensure correct phasing (positive to positive, negative to negative) to avoid audio distortion.
- Secure all connections tightly to prevent loose contacts.
6.3 Audio Source Connection
- Bluetooth Pairing:
- Power on the amplifier.
- Select the "BT" input mode using the MODE button on the front panel or remote control. The LED display will show "BLUE" or "BT".
- Enable Bluetooth on your device (smartphone, tablet, laptop).
- Search for "AV-660BT" (or similar, e.g., "Sunbuck BT") in your device's Bluetooth list and complete the pairing.
Image: AV-MP326BT amplifier highlighting built-in Bluetooth connectivity.
- USB/SD Card Playback:
- Insert a USB flash drive or SD card into the corresponding slots on the front panel.
- The amplifier will automatically detect and play supported audio files (MP3).
Image: AV-MP326BT amplifier with USB and SD card input slots.
- AUX Input:
- Use a 3.5mm audio cable (or RCA cables for VCD/CD inputs) to connect external audio devices (e.g., TV, CD player, phone) to the AUX input jacks on the rear panel.
- Select the appropriate input source (VCD, CD, LINE) using the MODE button.
- FM Radio:
- Extend the built-in telescopic antenna fully for optimal reception.
- Select the "FM" input mode.
- Use the front-panel buttons (CH+, CH-, AUTO) to auto-scan or manually tune to FM stations.
6.4 Microphone Connection
- Plug microphones into the front-panel MIC1 and MIC2 jacks (TAV-6188BT) or MIC1-MIC4 jacks (AV-MP326BT).
- Adjust the MIC VOL and ECHO controls for each channel to optimize vocal performance and avoid feedback.
Image: AV-MP326BT amplifier highlighting dual microphone input and remote control.
7. Operation Instructions
7.1 Basic Operation Steps
- Ensure all necessary cables (power, speakers, audio sources, microphones) are securely connected.
- Turn on the power switch. The amplifier will initialize, and the display will activate.
- Select your desired input source using the MODE button on the front panel or remote control.
- Gradually increase the master volume to a comfortable listening level.
- Adjust the TREBLE, BASS, and microphone controls (MIC VOL, ECHO) to optimize the audio output.
- When using a microphone, adjust the MIC VOL and ECHO knobs to avoid feedback and ensure clear vocal reproduction.
- When finished, lower the master volume to the minimum, turn off the power switch, and disconnect the power cord.
7.2 Using the Remote Control
The amplifier comes with a full-function infrared remote control for convenient operation from a distance. Use it to:
- Turn the amplifier on/off.
- Select input sources (BT, USB, SD, FM, AUX).
- Adjust master volume.
- Control playback (play/pause, previous/next track) for USB/SD.
- Perform FM radio auto-scan and manual tuning.
8. Maintenance
- Cleaning: Use a dry, soft cloth to wipe the exterior of the amplifier. Do not use liquid cleaners or aerosols directly on the unit.
- Antenna Care: Extend the FM antenna fully for optimal reception. Avoid bending or damaging the antenna.
- Storage: When not in use for extended periods, store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Power not connected, incorrect input source, loose speaker connections | Check power cord, select correct input, re-secure speaker cables |
| Bluetooth connection failure | Device out of range, Bluetooth disabled, signal interference | Move device closer, enable Bluetooth, reduce interference from other devices |
| Microphone feedback | Volume too high, microphone too close to speakers | Lower mic volume, reposition microphone away from speakers |
| Poor FM reception | Antenna not extended, weak signal | Extend the antenna, adjust the amplifier's position |
| Distorted audio | Overloaded input, incorrect EQ settings | Reduce input level, reset EQ to default settings |
10. Specifications
10.1 General Specifications (Applicable to both models)
| Item | Specification |
|---|---|
| Output Channels | 2.0-channel stereo |
| Bluetooth Version | 5.0 |
| Input Interfaces | USB, SD card, AUX (MIC input), Bluetooth 5.0, FM radio |
| EQ Controls | Treble, Bass adjustment (5-band EQ mixer on 326BT) |
| Display | Digital LCD screen showing input source, FM frequency, and playback status |
| Power Supply | AC 220V/50Hz or 110V/60Hz (regional), DC12V |
| Certification | CE |
10.2 TAV-6188BT Specific Specifications
| Item | Specification |
|---|---|
| Rated Power | 150W + 150W (Peak: 300W + 300W) |
| Load Impedance | 4-16 ohms |
| Input Sensitivity | 100mV (Audio), >10mV<30mV (Mic Output) |
| Input Resistance | 47KΩ (Audio), 600 ohms (Mic) |
| Signal to Noise Ratio | >80dB (Audio), ≥95dB (A weighting) |
| Harmonic Distortion | <0.01% (Audio), ≤0.02% (Audio) |
| Frequency Response | 20Hz-40KHz |
| Bass Adjustment | ±12dB (100Hz) |
| Treble Adjustment | ±12dB (100Hz) |
| Digital Reverberation Time | 200mT-50mT |
| Dimensions | 350mm x 290mm x 100mm |
| Weight | 4.5KG |
Image: Detailed specifications and dimensions for the TAV-6188BT amplifier.
10.3 AV-MP326BT Specific Specifications
| Item | Specification |
|---|---|
| Rated Power | 1200W (Peak: 2000W) |
| Rated Frequency | 20KHz - 20KHz |
| Signal to Noise Ratio | 90dB |
| Standard Impedance | 4 to 16 ohm |
| Total Harmonic Distortion | ≤ 0.5% |
| Signal Input Sensitivity | 200mv (± 30mv) |
| Microphone Input Sensitivity | 9 mv (± 2mv) |
| Recording Level Output | 1V |
| Auxiliary Level Output | 1V |
| Dimensions | 26cm x 29cm x 10cm (10in x 11.4in x 4in) |
Image: Detailed specifications for the AV-MP326BT amplifier.
11. User Tips
- For optimal sound quality, ensure all audio cables are of good quality and securely connected.
- When using the FM radio, fully extend the antenna and try different positions to find the best reception.
- If experiencing Bluetooth connectivity issues, ensure no other devices are actively trying to connect to the amplifier, and that your device is within range.
- To prevent accidental damage, always turn down the master volume before powering the unit on or off.
- Consider using an active subwoofer for enhanced bass, as the amplifier supports connecting one.
12. Warranty Information and Support
This product is covered by a manufacturer's warranty against defects in materials and workmanship for a period of 12 months from the date of purchase. For warranty claims, please contact the official customer service center with your purchase receipt and product details.
For further assistance or to view the official user manual in PDF format, please refer to the following link: Sunbuck Amplifier User Manual (PDF).
