The lower priced Shindo preamps as Aurieges and (at least older) Monbrison have 5k Ohm output, the Masseto, Vosne Romanee have 600 Ohm outputs.
What should be the optimal input impedance of the amp for a 5k Ohm preamp output? At least 10 times as much, so at least 50 kOhm, as often recommended?
What should be the optimal input impedance of the amp for a 5k Ohm preamp output? At least 10 times as much, so at least 50 kOhm, as often recommended?