2channel stereo output for enhanced sound quality Ideal for DIY speakers, professional sound systems, and DIY enthusiasts Adjustable controls Total volume, volume, and low volume allow you to tailor loudness and tonal balance Compact and easy to integrate Lightweight design fits into many DIY or upgrade projects; knob spacing is 22.5 mm for comfortable operation Preamplifier with bass, treble, volume and tone control Standard 2.543P interface for easy installation; delivers clear highs and deep lows directly to your amplifier board 23 practical use scenarios DIY speaker upgrade Integrate this board into a homebuilt speaker to improve stereo performance and provide flexible tone control for different music styles. Small to midsize professional systems Use in compact PA or studio monitors to finetune and low frequencies at the source, enhancing overall clarity. Electronics hobby projects Suitable for educational or hobby electronics projects that require straightforward installation via a 2.543P header and immediate access to tone and volume controls.