Standard SR-G24
Here's the inside of a well used and slightly abused SR-G24. In addition to the 7 transistors and single varistor, you can see the phono and external speaker jacks above the 3" speaker as well as the connector for the external power source, (located at the bottom to the left of the battery holder).
Transistors: (Hitachi) HJ-23 x 1, HJ-22 x 2, HJ-15 x2, HJ-17 x 2, [1N34A, HV12]