The phonostage gain with reference to the cartridge has nothing to do with the following preamplifier.
What your phonostage needs to do is amplify the signal from the cartridge correctly under 'ideal transfer' characteristics which should give you low noise and low hiss as is my and Hdm's case.
Whatever the output level is from your phonostage afterwards is whatever it is. The most important thing here is gain matching the cartridge to phonostage and NOT phonostage to preamplifier.
Most preamplifiers can handle an input signal upto 8V and more if they are 'discrete technology' types. A phonostage without variable gain output would output approx 560mV-660mV with your standard 0.25mV cartridge (depending on cartridge output variances).
I would just set your phonostage for 65dB is you have a 0.25mV cartridge and get on with listening to music.
What your phonostage needs to do is amplify the signal from the cartridge correctly under 'ideal transfer' characteristics which should give you low noise and low hiss as is my and Hdm's case.
Whatever the output level is from your phonostage afterwards is whatever it is. The most important thing here is gain matching the cartridge to phonostage and NOT phonostage to preamplifier.
Most preamplifiers can handle an input signal upto 8V and more if they are 'discrete technology' types. A phonostage without variable gain output would output approx 560mV-660mV with your standard 0.25mV cartridge (depending on cartridge output variances).
I would just set your phonostage for 65dB is you have a 0.25mV cartridge and get on with listening to music.