Enhance your audio projects with this compact and efficient PAM8403 Mini Type D Digital Power Amplifier. Designed for small spaces, this amplifier delivers high amplification efficiency with excellent sound quality, making it ideal for a variety of digital products. Powered by a 5V USB source such as a computer, phone charger, or lithium battery, it offers reliable performance without the need for a heat sink due to its low heat generation. Key Features: · Compact Mini Size: Measuring just 2 x 1.8 cm, this small amplifier easily fits into tight spaces, perfect for portable and embedded audio applications. · High Amplification Efficiency: With up to 90% efficiency, it delivers 3W per channel (left and right) at 4Ω load and 5V power supply, providing clear and powerful stereo sound. · Wide Power Compatibility: Operates within a working voltage range of 2.5V to 5.5V DC, compatible with USB 5V power sources, phone chargers, and lithium batteries. · Superior Sound Quality: The Type D amplifier design ensures sound quality remains stable without degradation from temperature rise, eliminating the need for bulky heat sinks. · Built-in Noise Reduction Circuit: Ensures no noise during power on/off, enhancing audio clarity for a smooth listening experience. · Comprehensive Protection: Features short circuit, over current, and over temperature protection to safeguard the amplifier and connected devices. · Versatile Applications: Ideal for use with LCD TVs, monitors, laptops, portable speakers, DVD players, game consoles, and phones, offering flexible integration options. Specifications: · Working Voltage: 2.5V-5.5V DC (do not exceed 5.5V; observe correct polarity) · Suitable Speaker Impedance: 4-8Ω (4Ω recommended) · Speaker Power: 2-8W · Output Power: 3W + 3W (stereo) · Size: 2 x 1.8 cm (0.8 x 0.7 in) · Weight: Approx. 10g (0.4 oz) · Quantity: 6 pieces Package Includes: · 6 x PAM8403 Mini Type D Digital Power Amplifiers Note: Connect the speaker before powering the amplifier to prevent damage. Avoid high input audio signals due to the module’s high gain digital volume control. This PAM8403 Mini Type D Digital Power Amplifier offers a compact, efficient, and reliable audio amplification solution, perfect for enhancing sound quality in a variety of electronic devices.