Separated potentiometer version Easy to install and not limited by the spacing between casings, allowing flexible mounting in varied layouts. Single power supply design Dual purpose and more convenient to use, simplifying wiring and reducing power supply considerations. AD828 opamp performance AD828 is an improved version of NE5532, with much better performance than the NE5532 power amplifier module. Material and quality Made of quality materials with quality for reliable use. Use scenarios DIY audio amplifier or preamplifier projects that benefit from easy installation and flexible mounting. Portable or compact devices that rely on a single power supply, simplifying design and wiring. Lab, educational, or hobby electronics setups where reliable components and enhanced performance over older NE5532 modules are advantageous.