MC Input Type
The method used by the moving-coil input’s own first stage to handle and amplify the cartridge signal.
The main approaches are active voltage amplification, a step-up transformer and current-mode sensing. This describes the MC input specifically, rather than the product’s entire circuit or output connection.
MC Input Type — Phono Preamp
For a Phono Preamp, MC input type helps explain how the small cartridge signal enters the stage. A product may offer more than one approach through separate inputs or options, with different matching requirements.
An input transformer feeding the same stage used by MM is a transformer input; the later active circuitry does not make it a separate active MC topology. Current-mode requires an explicitly described current-sensing or transimpedance MC input.
Compare the available input method with the cartridge manufacturer’s compatibility guidance and the stage’s gain and loading options. A balanced connector, tube output stage or current-mode line output does not establish the MC input topology.
MC Input Type — MC Head Amp
For a Phono Head Amp, input topology describes how the cartridge signal is handled before it is passed to an MM phono stage. Conventional active voltage gain and current-sensing designs can have different cartridge-matching requirements.
Read the manufacturer’s description of the MC input itself. Current-mode or transimpedance must refer to that input; an output-stage current link or another internal conversion does not establish a current-sensing cartridge input.
Compare the stated method with the cartridge’s output and internal impedance, plus the head amp’s recommendations. The label does not establish universal cartridge compatibility or better sound, and loading or gain figures alone should not be used to infer a topology.