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Ortofon Phono MC Pre-Amplifier T-10; Passive 32dB gain, 1:40
A passive step-up transformer, not an active preamp — it takes a low-output moving coil into an MM phono input with no power supply and nothing active in the path. Toroidal transformers with permalloy shielding give 32 dB of gain at a 1:40 ratio, suited to cartridges of 2 to 4 ohms putting out around 0.1 to 0.2 mV. Bandwidth 20 Hz to 45 kHz. Good condition, tested and working.