MAOZUA AK35 HiFi Digital Bluetooth Amplifier User Manual

1. Introduction

Thank you for purchasing the MAOZUA HiFi Digital Bluetooth Amplifier. This device is designed to provide high-quality audio amplification for various applications, including home audio systems and car setups. It features multiple input options, including Bluetooth, USB, TF card, and AUX, along with FM radio functionality and remote control. Please read this manual carefully before use to ensure proper operation and to maximize your listening experience.

2. Safety Information

• Ensure the amplifier is connected to a power source matching the specified voltage (110-240V AC or 12V DC).
• Do not expose the device to rain, moisture, or extreme temperatures.
• Avoid placing the amplifier in direct sunlight or near heat sources.
• Do not open the casing; refer all servicing to qualified personnel.
• Keep out of reach of children.

3. Package Contents

Please check the package for the following items:

• 1 x MAOZUA AK35 Audio Stereo Amplifier
• 1 x Power Cord (EU plug or US plug, depending on variant)
• 1 x Remote Control
• 1 x English User Manual (This document, also available as PDF: User Manual PDF)

4. Product Overview

4.1 Front Panel Controls

1. Power Switch: Turns the amplifier on or off.
2. Bass Control: Adjusts the low-frequency audio output.
3. Treble Control: Adjusts the high-frequency audio output.
4. Input: Audio input selection (AUX).
5. Digital Display: Shows current mode, FM frequency, etc.
6. VOL-SCAN VOL+ MODE: Multi-function knob for volume, scanning, and mode selection.
7. TF Card Slot: Insert TF (MicroSD) card for MP3 playback.
8. USB Port: Insert USB disk for MP3 playback.
9. Volume Control: Main volume adjustment knob.
10. BT (Bluetooth) Indicator: Lights up when Bluetooth is active.

4.2 Rear Panel Connections

1. Audio Signal Input (R/L): RCA jacks for connecting external audio sources (e.g., CD/DVD player, computer).
2. Right Channel Output (+R -R): Speaker terminals for the right channel speaker.
3. Left Channel Output (+L -L): Speaker terminals for the left channel speaker.
4. DC 12V/5A Power Input: For connecting a 12V DC power adapter.
5. AC 110-240V Power Socket: For connecting the AC power cord.
6. FM-ANT: Terminal for connecting the FM radio antenna.

5. Setup Instructions

Follow these steps to set up your MAOZUA AK35 amplifier:

1. Connect Speakers: Connect your passive speakers (4-16 ohm impedance) to the speaker output terminals on the rear panel. Ensure correct polarity (+ to + and - to -) for both left and right channels.
2. Connect Power: Connect the provided power cord to the AC 110-240V power socket on the rear panel and then to a wall outlet. Alternatively, for 12V DC operation (e.g., in a car), connect a 12V/5A DC power adapter to the DC input.
3. Connect Audio Source (Optional):
   • For external devices like computers, CD/DVD players, connect them to the RCA Audio Signal Input (R/L) on the rear panel using an RCA cable.
   • For USB playback, insert a USB disk into the USB port on the front panel.
   • For TF card playback, insert a TF card into the TF card slot on the front panel.
4. Connect FM Antenna (Optional): Connect the FM antenna to the FM-ANT terminal on the rear panel for improved radio reception.
5. Power On: Flip the Power Switch on the front panel to the 'ON' position. The digital display should light up.

6. Operating Instructions

6.1 Basic Operation

• Power On/Off: Use the Power Switch on the front panel.
• Volume Adjustment: Rotate the 'Volume' knob on the front panel or use the 'Volume add/reduce' keys on the remote control.
• Mode Selection: Press the 'MODE' button on the front panel or the 'Signal input select key' on the remote to cycle through input modes (Bluetooth, AUX, USB, TF, FM).
• Bass/Treble Control: Adjust the 'Bass' and 'Treble' knobs on the front panel to fine-tune the sound.

6.2 Bluetooth Mode

1. Switch the amplifier to Bluetooth mode using the 'MODE' button. The digital display will show 'BLUE' or a similar indicator.
2. On your mobile device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
3. Select 'BT' or 'AK35' from the list to pair. Once paired, the Bluetooth indicator on the amplifier will stabilize.
4. You can now play audio from your device through the amplifier.

6.3 USB/TF Card Playback

1. Insert a USB disk or TF card containing MP3 audio files into the respective port/slot on the front panel.
2. Switch the amplifier to USB or TF mode using the 'MODE' button. The amplifier will automatically start playing the audio files.
3. Use the 'Last Song', 'Next Song', and 'Pause/Play' buttons on the front panel or remote control to manage playback.

6.4 FM Radio

1. Switch the amplifier to FM mode using the 'MODE' button.
2. Use the 'VOL-SCAN VOL+ MODE' knob (short press for scan) or the 'CH-up' / 'CH-a downward' buttons on the remote to scan for radio stations.
3. The digital display will show the current FM frequency.

6.5 AUX Input

1. Connect your external audio source (e.g., computer, CD player) to the RCA Audio Signal Input (R/L) on the rear panel.
2. Switch the amplifier to AUX mode using the 'MODE' button.
3. Play audio from your connected device.

7. Remote Control Functions

1. Power Key: Turns the amplifier on/off.
2. Repeat Key: Toggles repeat mode for media playback.
3. Signal Input Select Key (MODE): Cycles through input sources (Bluetooth, AUX, USB, TF, FM).
4. CH-up: Next channel/station (FM mode).
5. CH-a downward: Previous channel/station (FM mode).
6. EQ: Cycles through equalizer sound modes.
7. Upward Play Button Key (Next Song): Skips to the next track.
8. Down the Play Button Key (Last Song): Skips to the previous track.
9. Pause/Play Key: Plays or pauses current track.
10. Volume Reduce Key: Decreases volume.
11. Volume Add Key: Increases volume.
12. Repertoire Straight Constituency (Cycle): Toggles playback modes (e.g., single repeat, all repeat).

8. Specifications

9. Troubleshooting

If you encounter any issues with your amplifier, please refer to the following common problems and solutions:

• No Power:
  • Check if the power cord is securely connected to both the amplifier and the power outlet.
  • Ensure the power switch is in the 'ON' position.
  • Verify the power outlet is functional.
• No Sound:
  • Check speaker connections for correct polarity and secure fit.
  • Ensure the volume is turned up on both the amplifier and the audio source device.
  • Verify the correct input mode is selected (Bluetooth, AUX, USB, TF, FM).
  • If using AUX, check the audio cable connection.
• Poor Sound Quality/Distortion:
  • Check speaker impedance (should be 4-16 ohm).
  • Reduce the volume to prevent clipping.
  • Adjust Bass and Treble controls.
  • Ensure audio cables are not damaged and are securely connected.
• Bluetooth Pairing Issues:
  • Ensure the amplifier is in Bluetooth mode.
  • Make sure your device's Bluetooth is enabled and discoverable.
  • Move your device closer to the amplifier.
  • Try unpairing and re-pairing the device.
• Remote Control Not Working:
  • Check if the remote control batteries need replacement.
  • Ensure there are no obstructions between the remote and the amplifier's IR receiver.

10. Maintenance

• Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or abrasive materials.
• Ventilation: Ensure the amplifier has adequate ventilation to prevent overheating. Do not block the ventilation holes.
• Storage: When not in use for extended periods, store the amplifier in a cool, dry place away from direct sunlight and dust.

11. User Tips

• For optimal sound quality, use high-quality audio cables and speakers that match the amplifier's specifications.
• Experiment with the Bass and Treble controls to find the sound profile that best suits your preferences and the music genre.
• When switching between input sources, it's good practice to lower the volume first to avoid sudden loud noises.
• If using the amplifier in a car, ensure stable power supply to prevent damage from voltage fluctuations.

12. Warranty and Support

For warranty information, technical support, or service inquiries, please contact the MAOZUA Official Store or your retailer. Keep your purchase receipt as proof of purchase.