TPA3116D2 2.1 Channel Digital Amplifier Board XH-M139 12-24V Wide Voltage 2×50W+100W HiFi Subwoofer Module with AUX Input

Description Report Item Product Name: 2.1-Channel Audio Amplifier Module Model Number: 1HW-302B Chip Configuration: NE5532 × 3 + TPA3116D2 × 2 Operating VoltageRecommended:DC 24V (Range: 12–26V) Output Power: 80W × 2 (Stereo) + 100W × 1 (Subwoofer) Load Impedance: 4–82Ω Speakers Channels: 2.1 (Left + RightSubwoofer) Dimensions: 100 × 70 × 30 mm

This amplifier module utilizes two genuine TPA3116D2 digital power amplifier chips: one for stereo channel amplification and the other bridged with NE5532 preamps to drive the subwoofer. Key features include compact size, high efficiency, robust power output, and minimal heat generation.

The NE5532 is a high-performance, low-noise dual operational amplifier (dual op-amp) IC. While similar to standard op-amps, it excels in noise performance, output drive capability, and wide small-signal bandwidth, with a broad supply voltage range. Ideal for high-fidelity and professional audio equipment, instrumentation, control circuits, and telephone channel amplifiers. As an audio amplifier, it delivers warm, high-fidelity sound and earned the title ""King of Op-Amps"" among audiophiles in the early 1990s—remaining a staple in enthusiasts' collections today.