Hey guys...

...anyone know the difference between the two?  To me they look very similar.

The 5F4/5E5A/5E7 group of amps are all essentially identical. Same PT. Same OT. Same choke. Same circuit. Same tube compliment. The main difference is that the 5F4 (Tweed Super) used 2 10-inch speakers, the 5E5A (Tweed Pro) used 1 15-inch speaker, and the 5E7 (Tweed Bandmaster) used 3 10-inch speakers. It was very common for Fender to take identical amplifiers, change the speaker configuration within reason, and then market each of those amps as different combo amplifiers (you can see this practice occur in the blackface era as well). Aside from that, there is a single resistor (R34) that varies in value. For the 5F4 and the 5E7, R34 is 56K. For the 5E5A, R34 is 100K. Notice that 5F4 and 5E7 both use 10-inch speakers and 5E5A uses a 15 incher. So, the variance of R34 is certainly due to the different size in the speakers used.

Hope that helps.

Justin