The optional PSU gives much better sound than the standard.
Exceptional sound for the price.
Input Sensitivity - 0.1 mV MC, MM 2 mV
Loading is adjustable via rotary switch with individual resistors on the back for MM and MC cartridges in 12 steps.
MC 3,10,20,30,50,75,100,150,210,300,500 and 1000 ohms
MM 22,33,47,56,68,100,150,220,330,470,680 and 820 pF