Dear Shsohis: The Pass Xono is a very decent phono stage and due to the low internal helikon resistance ( 5.5 Ohms ) IMHO it will be perform very good with a load impedance of 100 Ohms.
I owned the Helikon with good success at that impedance load.
In many ways as Jcarr point out the impedance load value is system dependent and you have to set up where you hear the best natural balance music sound reproduction on recordings that you know in deep, looking too for the best extreme frequency range best reproduction ( the load impedance changes affect mainly the high frequencies on your phono stage. ).
Btw, Buscis2 post speaks about " capacitance " and this " figure affect " the response on a MM cartridge but there is no change in a very low internal resistance cartridges like your MC Helikon ( at least not at pf values that are the standard ones in a phono stage like your Pass Xono. ) so don't worry about.
Regards and enjoy the music.
Raul.
I owned the Helikon with good success at that impedance load.
In many ways as Jcarr point out the impedance load value is system dependent and you have to set up where you hear the best natural balance music sound reproduction on recordings that you know in deep, looking too for the best extreme frequency range best reproduction ( the load impedance changes affect mainly the high frequencies on your phono stage. ).
Btw, Buscis2 post speaks about " capacitance " and this " figure affect " the response on a MM cartridge but there is no change in a very low internal resistance cartridges like your MC Helikon ( at least not at pf values that are the standard ones in a phono stage like your Pass Xono. ) so don't worry about.
Regards and enjoy the music.
Raul.