This is a mobile phone sound amplifier designed based on passive acoustics, which enhances audio volume without requiring any external power. The entire device features an integrated, 3D-printed monolithic structure that uses internal sound channels to direct and amplify the audio emitted by the phone’s speaker, thereby improving the performance of the built-in speaker when used in loudspeaker mode.

The product adopts a slot-style design that is compatible with a wide range of smartphone sizes, ensuring stable placement and convenient use. The widened base further enhances stability, while the sleek, modern aesthetic combines practicality with decorative appeal.

Features:

• Power-free operation—environmentally friendly and energy-efficient
• Channel-based design for enhanced volume and sound quality
• Compatibility with multiple smartphone models
• Sturdy construction and easy placement
• Suitable for desktop use, movie watching, music listening, and other scenarios