This DIY project deals with high voltages that can be lethal and is not for beginners. Do not attempt this project unless you are qualified to work with high voltages. The design, views and opinions on this site are solely my own and are shared for research purposes only and are in no way intended to be professional advice. As with any DIY project that involves a mains electrical source, there is risk of shock and fire. Please take the necessary precautions in design and thermal management to mitigate these risks for your own safety. This is a unique hand made product. I don’t claim to conform to any laws or certification body. Any parts sold or traded involving an audio producing device are sold “as is” and is up to the customer to access and configure their own application, safety, and ultimate use. Listening to music or sudden noise or disturbances coming from the amplifier or headphones either intended or unintended at elevated levels can permanently damage your hearing. Please take every precaution to protect your hearing.