materials with quality Made from materials to ensure reliable, longlasting performance. AD828 improved version of NE5532 AD828 is a refined version of NE5532, delivering significantly better performance than NE5532 based power amplifier modules. Separated potentiometer version for easy installation The separated potentiometer version is easy to install and is not limited by the spacing between casings, enabling flexible mounting. Single power supply dual purpose design Operates from a single power supply, with a dualpurpose design for versatile and convenient use. Use scenarios and applications DIY audio amplifier projects: suitable for upgrading or building compact power amplifier stages in hifi or other audio projects, taking advantage of the improved AD828 performance. Preamplifier stage for recording or audio interfaces: can serve as a reliable gain stage where a separated potentiometer facilitates easy calibration and adjustment. Educational labs and prototyping: useful for learning and testing opamp based circuits, with the separated potentiometer simplifying experimentation and setup.