1. Introduction
Thank you for choosing the SHIDU 35W Voice Amplifier. This portable voice amplifier is designed to enhance your voice with clarity and power, making it ideal for teachers, tour guides, trainers, public speakers, and fitness instructors. It features a wireless lavalier microphone for hands-free operation and Bluetooth connectivity for audio playback. Please read this manual carefully before use to ensure proper operation and maintenance.
2. Product Overview
The SHIDU 35W Voice Amplifier system includes the main amplifier unit and a wireless lavalier microphone. The amplifier unit is compact and designed for portability, offering various wearing options.
Image 2.1: SHIDU 35W Voice Amplifier and Wireless Lavalier Microphone with included accessories.
2.1 Main Amplifier Unit
- Power/Volume Knob: Turns the unit on/off and adjusts volume.
- Microphone Input: For wired microphone connection (if applicable).
- AUX Input: For connecting external audio devices.
- USB Port: For USB drive playback.
- TF Card Slot: For TF card playback.
- Charging Port (Type-C): For charging the amplifier.
- Mode Button: Switches between different modes (Bluetooth, USB, TF, AUX).
- Play/Pause Button: Controls media playback.
- Previous/Next Track Buttons: Navigates media tracks.
2.2 Wireless Lavalier Microphone
- Power Button: Turns the microphone on/off.
- Indicator Light: Shows power and connection status.
- Charging Port (Type-C): For charging the microphone.
- Clip: For attaching to clothing.
Image 2.2: Close-up view of the SHIDU wireless lavalier microphone.
3. Setup
3.1 Initial Charging
Before first use, fully charge both the amplifier unit and the wireless lavalier microphone. Use the provided Type-C charging cable.
- Connect the Type-C cable to the charging port on each device and to a USB power adapter (not included).
- The indicator light will show charging status (e.g., red for charging, off or blue for fully charged).
- Charging time for the amplifier is approximately 2-4 hours.
Image 3.1: The amplifier features a 3100mAh battery, charging in 2-4 hours for up to 16.5 hours of use.
3.2 Pairing the Wireless Lavalier Microphone
The wireless microphone and amplifier are typically pre-paired. If re-pairing is needed:
- Turn on the amplifier unit by rotating the Power/Volume knob clockwise.
- Turn on the wireless lavalier microphone by pressing its power button.
- The microphone's indicator light should turn solid blue, indicating a successful connection to the amplifier. If it blinks, they are not paired. Refer to the troubleshooting section if pairing fails.
3.3 Wearing Options
The amplifier offers multiple ways to wear it for convenience:
- Pearl Chain: Use the included pearl chain for neck-hanging or shoulder-hanging.
- Belt Clip: Attach the amplifier to your belt or waistband using the integrated clip.
The lavalier microphone is lightweight and clips easily to your collar or clothing.
Image 3.2: The amplifier can be worn with the pearl chain, which is approximately 47.24 inches long.
Image 3.3: The lightweight lavalier microphone (0.02 lbs) clips comfortably to clothing, reducing ear discomfort.
4. Operating Instructions
4.1 Power On/Off and Volume Control
- To power on, rotate the Power/Volume knob clockwise until you hear a click and the display lights up.
- Continue rotating clockwise to increase the volume.
- To decrease volume, rotate counter-clockwise.
- To power off, rotate the knob counter-clockwise until you hear a click.
4.2 Using the Wireless Microphone
- Ensure the microphone is charged and paired with the amplifier.
- Clip the microphone to your collar, about 15-20 cm (6-8 inches) from your mouth for optimal sound pickup.
- Speak clearly into the microphone. Adjust the amplifier's volume as needed.
4.3 Bluetooth Connectivity
To play audio from a Bluetooth-enabled device:
- Turn on the amplifier.
- Press the 'Mode' button until the amplifier enters Bluetooth mode (indicated by a voice prompt or display icon).
- On your device, search for Bluetooth devices and select "SHIDU" (or similar name).
- Once connected, you can play music or audio from your device through the amplifier.
Image 4.1: The amplifier supports Bluetooth 5.3 for wireless audio streaming from compatible devices.
4.4 USB/TF Card Playback
- Insert a USB drive or TF card into the respective port.
- Press the 'Mode' button to switch to USB or TF card mode.
- Use the Play/Pause and Previous/Next buttons to control playback.
5. Maintenance
- Cleaning: Wipe the amplifier and microphone with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the device 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 device regularly, even if not in use for extended periods.
- Avoid Water: Keep the device away from water and moisture to prevent damage.
6. Troubleshooting
6.1 No Sound from Amplifier
- Ensure the amplifier is powered on and the volume is turned up.
- Check if the wireless microphone is powered on and successfully paired.
- Verify that the microphone is charged.
- If using AUX/USB/TF card, ensure the correct mode is selected and the audio source is playing.
6.2 Poor Sound Quality or Noise
- Ensure the microphone is positioned correctly (not too close or too far from your mouth).
- Reduce the volume if feedback (howling) occurs.
- Move away from other electronic devices that might cause interference.
- The amplifier features DSP noise reduction technology to minimize background noise.
Image 6.1: The amplifier utilizes AI intelligent technology with upgraded DSP for 92% noise reduction and 90% connection speed improvement.
6.3 Wireless Microphone Not Connecting
- Ensure both the amplifier and microphone are fully charged.
- Power cycle both devices (turn off, then turn on again).
- Ensure they are within the effective wireless range (up to 40m/131 feet).
6.4 Bluetooth Connection Issues
- Ensure the amplifier is in Bluetooth mode.
- Make sure Bluetooth is enabled on your device.
- Forget the device from your phone's Bluetooth settings and try pairing again.
7. Specifications
| Output Power | 35W |
| Battery Capacity (Amplifier) | 3100mAh |
| Charging Time (Amplifier) | 2-4 hours |
| Amplifying Time | Up to 16.5 hours |
| Wireless Microphone Connection Range | Up to 40 meters (131 feet) |
| Bluetooth Version | 5.3 |
| Coverage Area | Approx. 22,604 sq ft (2100㎡) for up to 320 people |
| Lavalier Microphone Weight | Approx. 0.02 lbs |
| Pearl Chain Length | Approx. 47.24 inches |
| ASIN | B0FRR8MMDL |
Image 7.1: The 35W output power allows the amplifier to cover a large classroom accommodating up to 320 people.
Image 7.2: Despite its small size, the amplifier delivers powerful sound with strong penetration.
8. Warranty and Support
For warranty information or technical support, please refer to the documentation included with your purchase or contact SHIDU customer service directly. Contact details can typically be found on the product packaging or the official SHIDU website.