First, by owning and listening to one MC cartridge and one MM cartridge, you will not learn "the difference" between MM and MC. You will only learn the difference between the two particular cartridges.
Second, according to the internet, the E-glo has provision for both MM and MC types. Just be sure you have connected your Ortofon MM into the MM inputs. If so, then check the capacitance loading which is adjustable on your E-glo. You guesstimate total capacitance load by adding the capacitance of your phono cables to the inherent apacitance of the phono input and the added load capacitance at the phono stage (which is the adjustable parameter on your E=glo). If the total capacitance is much different from recommended for your cartridge, that too can cause distortion. Load resistance should be 47K ohms or higher.