You can do one of two things, either educate yourself on the nitty gritty of electronic equipment, or you could avail yourself to a good dealer. I would start with an amp. Find one that truly matches the Genesis, then work upstream. It's not as hard as some people will make it, but a mismatch will definitely be audible. As a rule of thumb, tube equipment will require the most care.
Forgive me.
Forgive my ignorance O Masters of Sound and Fury. But other than sound quality, are any other factors significant when matching separates from different manufacturers? For instance, output voltage or input sensitivity or input impedance of a pre-amp when connecting to different corresponding values of another brand of amplifier? Any technical issues, simply sound, or nothing to be concerned about?