🎶 Unleash Your Inner Audiophile! Experience a 10% increase in tube performance for richer audio. Utilizes 1% precision metal film resistors for unmatched accuracy. Perfect for those who love to build and customize their audio gear. Compatible with various tube types like 6AK5, 5654, and 6AU6. Designed with a superior power supply system to minimize noise. 10% performance boost High-quality sound 12V AC input The AC 12V 6J1 Electronic Tube Bile Preamplifier is a high-performance pre-amp board designed for audiophiles and DIY enthusiasts. It features a 12V AC input, a boost function for enhanced tube performance, and a meticulously engineered power supply system that ensures clean audio output. With compatibility for multiple tube types and precision components, this preamp is perfect for elevating your audio experience.