Relation:
a+ (b x c) = a x (b + c)
a + b x c = (a +b) x (a + c)
This bass booster preamp is from an English publication (1966). We can mount it with more modern...
This circuit was obtained from a 1986 Spanish magazine Resistor. The magazine no longer exists, but...
This basic configuration can be found in a lot of articles on this site. In this case, the relay...