Introduction
The Avid AP-400 WonderEars Classroom Headphone is designed to provide a safe and engaging audio experience for young learners. Featuring an integrated microphone and a volume limit, these headphones are ideal for educational environments, supporting comprehension, literacy, and interactive learning activities.

Image: The Avid AP-400 WonderEars Classroom Headphone, showcasing its green and white design.
What's in the Box
- Avid AP-400 WonderEars Classroom Headphone (1 unit)
Setup
- Adjust the Headband: Gently slide the earcups up or down along the headband to achieve a comfortable and secure fit. The headband is designed to be easy-to-adjust for children aged 4-9.
- Connect to Device: Insert the 3.5mm TRRS jack into the compatible audio port of your device (e.g., tablet, laptop, cellphone). Ensure the connection is firm.
- Position the Microphone: The KidCom built-in microphone is integrated into the earcup. Ensure the earcup is properly positioned over the ear for optimal voice capture.

Image: The Avid WonderEars headphones connected to a laptop, demonstrating device compatibility.
Operating Instructions
- Listening: Once connected, audio from your device will play through the headphones. The volume is limited to 85dB to provide a safer listening experience for children.
- Using the Microphone: The integrated KidCom microphone allows for clear voice input during interactive learning sessions, online classes, or communication. No additional setup is required for the microphone.
- Device Compatibility: These headphones feature a standard 3.5mm jack, making them compatible with a wide range of educational devices including cellphones, tablets, and laptops.

Image: A close-up of the 3.5mm TRRS jack, highlighting its universal compatibility.
Maintenance
- Cleaning: Wipe the headphones with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners. Ensure no liquid enters the earcup or microphone openings. The enclosure material is Acrylonitrile Butadiene Styrene (ABS).
- Storage: Store the headphones in a clean, dry place away from extreme temperatures and direct sunlight.
- Cable Care: The cable is designed to be retractable. Avoid excessive pulling or bending of the cable to prevent damage.

Image: A close-up view of the headphone's durable braided cable and earcup connection.
Troubleshooting
- No Sound:
- Ensure the 3.5mm jack is fully inserted into the device's audio port.
- Check the volume settings on your connected device.
- Test the headphones with another device to rule out device-specific issues.
- Microphone Not Working:
- Verify that the 3.5mm TRRS jack is fully inserted. A TRRS jack supports both audio output and microphone input.
- Check the microphone input settings on your connected device.
- Ensure the application you are using has permission to access the microphone.
- Uncomfortable Fit:
- Adjust the headband by sliding the earcups until a comfortable and secure fit is achieved.
- Ensure the earcups are positioned correctly over the ears.
Specifications
| Brand | Avid |
| Model Number | AHSP400TRRS-01G |
| Model Name | WonderEars |
| Color | Green |
| Ear Placement | Over Ear |
| Form Factor | On Ear |
| Impedance | 32 Ohms |
| Age Range Description | Kid (4-9 years) |
| Built-In Media | Headphones |
| Noise Control | Passive Noise Cancellation |
| Frequency Range | 50 Hz – 20 kHz |
| Audio Driver Type | Dynamic Driver |
| Additional Features | Microphone Included |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) |
| Specific Uses For Product | Education |
| Compatible Devices | Cellphones, Tablets, Laptops |
| Cable Features | Retractable |
| Headphone Jack | 3.5 mm Jack (TRRS) |
| Connectivity Technology | Wired |
| Item Weight | 0.17 Kilograms |
| UPC | 820309000453 |
Warranty and Support
For warranty information and technical support, please refer to the official Avid website or contact their customer service. Keep your purchase receipt for warranty claims.
You can visit the Avid Store on Amazon for more information: Avid Store
