Simple DIY Ruby mini guitar amp

This simple Ruby mini guitar amp is amazing. It gives great sounds details even at low and high volumes with almost zero distortion. I just resumed playing musical instrument specially guitar last 2009. It was in 1991 since I last played guitar and keyboard and I was just a beginner back then, so please be easy and patient with me. Don’t expect expert shredding and playing from me. I’m demoing what this little amp can do. This is more on its sounds quality and its size and how it was made. I stumble