- High quality NE5532 dual op-amp provides low noise and clean, clear output for a preamplifier stage - XH-A902 preamplifier board uses the NE5532 chip to achieve purer sound compared with other similar op amps - Built with reliable electronic components to deliver stable, long service life - Wide input power range: DC 12 to 30 V, enabling flexible power solutions - Function: acts as a dedicated preamplifier to boost and condition audio signals before amplification - Compatibility: suitable for integration into DIY audio projects, home stereo setups, and other line-level signal paths requiring a clean preamp - Size and form: compact preamplifier board designed for convenient inclusion in equipment racks or hobby projects - Performance: aims to provide low noise and stable operation across the specified power range Use scenarios - DIY audio chain: insert the XH-A902 as the front-end preamplifier for line-level sources such as DACs, CD players, or tuners before a power amplifier - Home audio upgrade: use as a dedicated preamp stage in a compact stereo system to improve signal quality and reduce noise in the audio path - Educational or hobby project: incorporate the board into learning setups or custom audio projects powered by a 12-30 V DC supply to study op-amp based preamplification