I think that the ones with RF output already had RCA outputs anyway, and the RF output was only something you needed as a last resort. Since the empeg has RCA ins, I don't think you'd need to resort to the RF output.

Okay, I just checked Crutchfield. I was wrong. All those add-on units have a note that says: "Compatibility: The output of this unit is only RF, so it must be used with an FM tuner."

How lame!

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Tony Fabris