A156 Hearing Module with Digital Auditory Enhancement Technology efficiency audio performance: Powered by PAM8403 Digital Auditory Enhancement Technology, delivering clear sound with low noise and minimal power consumption. Easy USB 5V power input: Runs directly from any standard USB 5V source, making it simple to connect to computers, portable chargers, or other USB power supplies without additional adapters. Fourchannel audio processing: Designed to handle multiple audio inputs simultaneously, ideal for providing rich, multisource sound in home theater systems, background music setups, or interactive installations. Compact and versatile design: Small footprint allows easy integration into custom electronic projects, for hobbyists, DIY audio builds, and spacesensitive applications. Key features and benefits: Reliable performance for continuous audio playback with efficiency and stability. Universally compatible with common USB power sources for hassle operation. Supports multichannel sound for immersive audio experiences. Lightweight and portable for flexible placement in different environments. Typical use scenarios: 1. Enhance a home theater setup with clear, multichannel audio to improve movie soundtracks and dialogue. 2. Provide consistent background music in retail or hospitality settings without bulky audio equipment. 3. Integrate into DIY electronics projects for a compact, quality audio output solution. This module combines advanced processing technology with ease of use, making it a practical choice for both professional and hobby audio applications. Its efficient power design and multichannel capability ensure performance that meets the needs of modern sound systems.