Product model: 2001 Power amplifier chip: TPA3221 Product name: 100W+100W dual channel / 200W single channel pure rear stage amplifier board Adapted power supply: The working voltage range is 1030V DC, with a limit of 31V. It is recommended to use a DC power supply. Key benefits Flexible output options: configure as a dual channel amplifier delivering 100W per channel, or as a single channel amplifier delivering 200W for a mono setup. Reliable finalstage performance: built around the TPA3221 power amplifier IC for clear, stable amplification in rearstage audio applications. Compact, dedicated rearstage design: optimized as a pure rearstage amplifier board for straightforward integration into existing audio systems. broad input compatibility: accepts a DC power supply from 10 to 30V, with a maximum rating of 31V, enabling use in a variety of environments when powered by DC sources. What it does Delivers power to drive speakers with clean, dynamic sound in stereo (dual channel) or mono (single channel) configurations. Serves as the final amplification stage in audio setups, helping to achieve louder outputs with maintained signal fidelity. Performance and reliability Uses a proven amplifier IC (TPA3221) to balance performance and efficiency in a compact board form. Designed for DC operation within the specified voltage range, supporting stable performance across typical power supplies. Size and construction notes Described as a rear stage amplifier board; designed for straightforward integration into existing audio systems or DIY projects that require a dedicated final amplification block. 23 practical use scenarios Scenario 1: Build a compact stereo hifi or multimedia speaker system by using two channels at 100W each to power a pair of speakers from a suitable DC power supply within 1030V. Scenario 2: Create a mono power amplifier block (200W) for a subwoofer or a single power speaker in a home theater or small venue setup, using a DC supply up to 31V. Scenario 3: Implement as a final amplification stage in DIY audio projects or professional audio setups that require a robust, DCpowered rearstage amplifier with configurable channel output.