Used in: 220V, 240V, 100-65 * Mojo 100-65 transformers are the "original style" 100-65 (with the exception of part number 7025102). Your transformer will have a number printed on the bell. If this number is 100-65 use 7025100 if it is 100-65-25 use 7025150. If your 100-65 has a -1 or a -2 after the part number it is a second revision. To make this more confusing Music Man designated this model as style 1 on their schematics as opposed to the more logical style 2 which they used with their 200-130 model. Second revision amp circuitry regardless of what it is called, requires significant changes that are as yet unsupported by Mojo in order to make an "original style" 100-65 transformer work in them.