iPhono Calculator

Depending on the version of your iFi iPhono there will be different dip switches to change.

Please select the correct iPhono to get started.

Turntable cartridges come in two types: moving magnet and moving coil. You can find out which type you have by looking in your catridge technical specifcations.

MOVING MAGNET
Moving magnet (MM) cartridges have a cantilever which transfers the mechanical vibrations picked up from the record groove directly into the cartridge’s magnet. Its constantly changing magnetic field creates a magnetic flow which generates an electromotive force in direct proportion to the vibrations.

MOVING COIL
A moving coil (MC) cartridge has a fixed magnet and mobile coil. This coil moves within the magnetic field created by the fixed magnet, generating an electromotive force. Because its moving mass is much closer to the pivot point, it reduces inertia, creating a more hi-fidelity sound.

HIGH OUTPUT MOVING COIL
This functions the same as a moving coil catridge but produces a higher mV output, by selecting this cartridge type it will allow you to select a higher cartridge output.

Each and every cartridge requires a correct load to sound the best. MM cartridges require a specific capacitive load (pF) with a fixed 47kΩ resistive load for correct high frequency response, MC cartridges require resistive load (Ω) for correct damping.

Generally speaking, the correct load value is stated in the cartridge manual. However some cartridges don’t state this value and the stated value may not be always the best. It may require some experimenting to find the favoured load.