In my early teen years we got our first colour TV, the old B&W went first to the basement and then to my bedroom. I had gotten a car radio from an old Chevy, and an article from an old electronics magazine sparked my interest. Simply replace the radios vibrator with a 6.3V filament transformer and it was converted to a house radio. I connected it to the TV speaker and the sound was amazing, better than the TV audio! Tubes sound fantastic! Well I just had to play around with it and eventually damaged it, but then I found another article about turning your old TV into an oscilloscope, that was also kind of cool!