@rsf507 thanks for clarification
upgrade is an endless quest, any LOMC cartridges i have tried with my PH-10 is dead quiet, i mean really all my 10+ (MC) cartridges (with output of 0.15 mV and higher), except for the only one with an output of 0.05 mV (this is the lowest output in existence). So i have no problem with my PH-10 which i bought in the summer 2018. Really don’t even need this 2019 upgrade.
upgrade is an endless quest, any LOMC cartridges i have tried with my PH-10 is dead quiet, i mean really all my 10+ (MC) cartridges (with output of 0.15 mV and higher), except for the only one with an output of 0.05 mV (this is the lowest output in existence). So i have no problem with my PH-10 which i bought in the summer 2018. Really don’t even need this 2019 upgrade.