XHA902 Audio Preamplifier Board The XHA902 audio preamplifier board is designed for quality sound performance, using an original imported opamp chip that delivers clarity and reduced background noise compared to similar opamp models. This makes it an choice for enhancing audio signals before amplification, ensuring clear, detailed sound output. Key Features: quality imported opamp chip for improved audio fidelity and low noise floor. Compatible with a wide range of audio amplifier setups requiring a preamplifier stage. Broad voltage input range: operates reliably on DC 12–30V power supply. Compact and durable design suitable for integration into various audio systems. Clear polarity markings for easy and safe connection (VCC positive terminal). Function and Use: This is a preamplifier board designed to boost audio signals before they reach a power amplifier. It cannot drive speakers directly. Requires connection to a separate amplifier and speaker for operation. Connect the audio output from the preamplifier to an amplifier input, then connect the amplifier to speakers. Power the board using a DC 12–30V supply, ensuring correct polarity for stable operation. Practical Applications: 1. Home audio systems – Use as a signal preamplifier to enhance clarity and detail before delivery to your main amplifier. 2. DIY audio projects – Ideal for customizing or upgrading existing audio setups with a qualitative signal boost. 3. Studio or rehearsal equipment – Improves instrument or microphone signal levels prior to professional amplification. Specifications: Model: XHA902 Voltage supply: DC 12–30V Audio stage: Preamplification only (cannot drive speakers directly) Polarity: VCC is positive, ensure correct wiring to avoid damage The XHA902 provides reliable, performance audio signal amplification for a wide range of applications, making it an essential component for anyone seeking improved sound quality in their audio system.