Bgupton,
The way I understand it , is that SUT step-up ratio is inversely proportional to the input impedance, it presents to the cartridge
Your Koetsu has 5 Ohm impedance, so it likes "to see" the load, that is approximately 10 times higher, 50-100 Ohm
if the SUT (Cotter MKII L), is designed specifically for Koetsu, that means, it has highish step up ratio, likely 25-30.
BTW, I have Vosne Romanee and Koetsu Urushi cart myself.
I'm getting Ypsilon MC 10 L SUT (1:10 ratio) and 500 Ohm input impedance, but you can load it down to required by Koetsu 100 Ohm with additional resistors.
I'm going to try and see how it works
The way I understand it , is that SUT step-up ratio is inversely proportional to the input impedance, it presents to the cartridge
Your Koetsu has 5 Ohm impedance, so it likes "to see" the load, that is approximately 10 times higher, 50-100 Ohm
if the SUT (Cotter MKII L), is designed specifically for Koetsu, that means, it has highish step up ratio, likely 25-30.
BTW, I have Vosne Romanee and Koetsu Urushi cart myself.
I'm getting Ypsilon MC 10 L SUT (1:10 ratio) and 500 Ohm input impedance, but you can load it down to required by Koetsu 100 Ohm with additional resistors.
I'm going to try and see how it works
