Features: Professionally manufactured amplifier board with precise design; waterproof and dustproof protection; stable performance in a compact package. performance: Preamplifier uses the performance NE5532 chip for low noise and strong output drive. Amplification factor is 5x, delivering clear, impactful sound. Dualchannel stereo power amplifier configuration. : Built with electronic components for stable performance and long service life. Thoughtful circuit layout and compact structure make it easy to use. Brand : 100 percent brand preamplifier tone board, rigorously tested before shipment to ensure the quality and safe use. Practical applications: Use in a home stereo or hi fi system as a front end preamplifier to improve signal quality. Ideal for DIY audio projects and custom amplifier builds requiring a compact dual channel preamp. Suitable for small venues or recording setups that need a reliable, two channel preamp in a compact form factor. Compatibility and specs: Dual channel stereo configuration Amplification factor: 5x Uses NE5532 for low noise and strong drive Compact, easy to integrate with existing amplifier systems Designed with water resistance and dust prevention for reliability