Neo,
50 Ohms for input impedance. Some phono stages, especially for MC Cartridges, have the ability to set "input impedance" to better match the internal resistance of the cartridge.
Tuan
It doesn't work like that. Impedance matching is for transformers. Going straight in is a whole other ball game. There should be no frequency response difference with any load using a LOMC. If it sounds bright or harsh with higher impedance input you're getting intermodulation from super high frequency overload or oscillation. Transistor preamps with extended bandwidth are more susceptible.
Have you tried other loads? It might help to reduce shunt capacitance, but often you're stuck between a rock and a hard place. Often some value of capacitance is needed as a filter for the pre, but it also lowers high frequency resonance of the cart/preamp.
The Cadenza Black is a 5 ohm cart. You should have no problem with a higher impedance input. I think you'll find that it sounds more wide open and dynamic at higher impedance setting and more focused/detailed with lower value (50 ohms).
neo
