I have too many cartridges and with a proper phono stage the problem with cartridge output does not exist at all. Position of the volume control on my passive Aleph L preamp is not always the same (the power amp is Yamamoto A08S now). Everything from 0.15 to 5mV (or higher) is fine. Even lower output MC are OK. All you need is a decent phono stage (like gold note ph-10 with optional gain settings).
Regarding MM cartridges i think 3mV is fine, there are lower output MM and higher output MM up to 9mV sometimes. Something like 3-5mV is medium.
Regarding MM cartridges i think 3mV is fine, there are lower output MM and higher output MM up to 9mV sometimes. Something like 3-5mV is medium.