Wide application This power amp board is suitable for speaker DIY projects, soundbox modification, repairs, and related audio work. Easy to use Supports DC input from 12 to 26 V and delivers up to 150 W of output. It offers broad compatibility with many audio setups. Simple to connect The amplifier module is straightforward to wire and can be mounted into a speaker enclosure with ease. Reliable replacement part Provides solid performance and serves as a practical replacement for an old or damaged amplifier module. Use scenarios Upgrading a DIY bookshelf or floorstanding speaker to improve volume and clarity in a home audio system. Repairing a damaged soundbox or speaker by replacing the failing amplifier module with a likeforlike performance part. Building a compact portable speaker or small PA system that operates from a DC power source within 12 to 26 V.