Fender Champ in an antique Sparton radio cabinet
This is another radio given to me to be converted into a tube guitar amp. The Sparton 410 radio is almost 90 years old and was built in the pre-superheterodyne era. Surprisingly, it had been restored and was somewhat functional—at least, it was making some noise. The original power transformer produced 5V and 2.5V AC and weighed around 10 pounds, so it was replaced with a modern one. I built a classic Champ circuit and integrated a tone pot with the original dial scale. The front panel was reinforced with a plywood plate to support a new 8-inch Jensen speaker. The amp looks great and is making its owner very happy.
