Which transformers are used for MC cartridges?

For moving-coil (MC) cartridges, Lundahl step-up transformers (SUT) are used to raise the very small signal to MM level. Important factors are the turns ratio, input impedance and the desired gain. The selection depends on the internal resistance of the cartridge and the phono input. For optimal results, the transformer should be matched according to the data sheet and the system data.

The most popular models for normal impedance are the LL1931 and LL1933. For systems with low impedance of just a few ohms, the LL1941 is suitable, while the LL1681 is our price tip.