How do I choose the right SUT ratio for my moving coil cartridge?

Choosing the right step-up transformer (SUT) ratio for your moving coil cartridge is all about matching gain and loading. Too much gain and your phono stage may overload; too little and the music will sound flat and lifeless. The right ratio depends on cartridge impedance and the load reflected through the transformer. That’s why we created the MC1 moving coil step-up transformer preamp, which offers flexible loading options and can be configured with Lundahl transformers in a variety of ratios. To simplify the process, try our online SUT Load Calculator, which lets you experiment with ratio, impedance, and loading values to find the perfect match for your cartridge.