Thank you for visiting Hifisonix. This website started about twelve years ago as a place where I could blog about my rekindled interest in all things audio after a twenty-year hiatus. I subsequently published several DIY articles and now have a regular following of DIY audio fanatics. Things took off after I published the sx-Amplifier and nx-Amplifier designs in 2012, and by 2015 Hifisonix had received over 1 million hits. More recently, the kx2-Amplifier, which builds upon the sx-Amplifier, has sold over 150 PCB sets, while the total number of sx, nx and kx2 amplifier PCB sets sold is close to 400 with most of these being built by enthusiasts. One of the most popular posts has been ‘How to Wire Up an Audio Amplifier’ which has been referenced dozens of times across the web and downloaded hundreds of times. Early in 2020, the X-Altra MC/MM Phono Preamp, featuring state-of-the-art noise, distortion and overload performance, was published in the US magazine ‘audioXpress’ (you can find links to the audioXpress resources page in the link above). Most of the designs featured on the Hifisonix pages here also have threads running over on diyAudio.com, where, if you’ve never visited it, you’ll find an international community of like minded diy audio folk discussing and building all sorts of fantastic gear.
I hope you enjoy this new Hifisonix website and that it will help you have fun building better amplifiers, preamplifiers and supporting circuits. There are power amplifier projects, line preamplifiers, vinyl preamps and support boards, all with full build instructions, BOMs and PCB availability. A new builders forum will be launched in the new year where you can ask questions and get quick answers should you need to.
So, take a look around, and if you have any questions or feedback, feel free to comment.