Moving-coil cartridges are wonderful things, but they suffer from a disadvantage in their extremely low output, often less than 1mV peak, or one two-thousandth of what most CD players produce. Clearly, low-noise amplification is a must. Because they have a low impedance, the self-noise of such cartridges is actually very low, but getting an amplifier to match or (ideally) better it is hard work.



Link: Techradar