Hi,
E-mu Ultra series takes 6870 and 6871 Sound ROMs ( E-synth & Orbit / Mo-Phatt ) I have the same sound ROMs but they are 6820 and 6821 which was supposed to be for E6400 and E4x older models..I've heard that you can actually use them in the Ultras and It works fine..Is that true ? Is the model numbers are just different because of the period of time they were issued and the actual ROMs are identical ? If anyone knows about this please help...Thanks