SoundSmith Sassuro Paula and Manley Steelhead

Jeadac, SoundSmith Paua is moving iron cart, not MM or MC type one. Mine is 470 Ohm type with low output of 0.3 mV

Standard MM load of 47K does not sound right with this cart.
Y-jumper allows you to add whatever resistor value needed in parallel to the standard 47K. For example, using 1K resistor gives approximately (1K + 47K)/(1K x 47K)= 1.02 K cartridge load value which is not a standard option for Manley Steelhead MM input.

Krell303:
Hi, just an FYI, that value should be 979 ohms. A good rule of thumb is that the resultant resistance whenever you parallel values will always be smaller than the lowest resistor value :)

the formula should be
Rt = R1*R2 / R1+R2
or
1/Rt = 1/R1 + 1/R2

Audiofun, you're absolutely correct