Today I'm living up to my moniker Bombaywalla 'cuz I'm writing from Bombay, India! Am visiting the home I grew up in & where my parents still live!
As TWL mentioned above, it is important to get the impedance match betwn cart & phono pre correct otherwise one can severely degrade the sonics of the cart. Electrically speaking, the phono pre impedance should be 10X that of the cart. so that it doesn't load down the voltage coming of the cart. I think that you have this already but, I agree, that not everyone agrees as to what the correct value is over & above the 10:1 general rule-of-thumb as everyone's ears are trained different.
The capacitance in the phono pre + that of the cable & the the internal DC resistance of the cart. forms a low pass filter. Wrong selection of the phono pre input impedance can cause this filter to attenuate freq. in the audio band & give you vastly degraded sound.
There is a good dissertation on this on the Hagerman Technology website or on the AudioAsylum FAQ page (in the vinyl subsection). It clearly states the advantages of selecting the correct impedance. It is shown graphically as well & it worth your time to read it.
FWIW.
As TWL mentioned above, it is important to get the impedance match betwn cart & phono pre correct otherwise one can severely degrade the sonics of the cart. Electrically speaking, the phono pre impedance should be 10X that of the cart. so that it doesn't load down the voltage coming of the cart. I think that you have this already but, I agree, that not everyone agrees as to what the correct value is over & above the 10:1 general rule-of-thumb as everyone's ears are trained different.
The capacitance in the phono pre + that of the cable & the the internal DC resistance of the cart. forms a low pass filter. Wrong selection of the phono pre input impedance can cause this filter to attenuate freq. in the audio band & give you vastly degraded sound.
There is a good dissertation on this on the Hagerman Technology website or on the AudioAsylum FAQ page (in the vinyl subsection). It clearly states the advantages of selecting the correct impedance. It is shown graphically as well & it worth your time to read it.
FWIW.