MCL 1:20 step-up transformer with Lundahl transformers for low output moving coil cartridges and MM phono stages. Read more.
The MCL 1:20 MC Transformer is a high-quality moving coil step-up transformer designed to raise the very small signal from low output MC cartridges to a level suitable for moving magnet phono stages. Its 1:20 turns ratio makes it especially relevant for cartridges in the low millivolt range and for systems where the phono stage has only an MM input, as is often the case with many valve-based designs. It is aimed at music lovers and demanding vinyl users who want a carefully matched, passive interface between cartridge and phonostage.
The MCL uses transformers supplied by Lundahl of Sweden and features a cobalt based uncut amorphous strip core. Its winding geometry is designed to help reject hum, while the loading network presents 100 ohms to the cartridge. With 26 dB voltage gain and a stated bandwidth of 8 Hz to 75 kHz with a 10 ohm source impedance, this step-up transformer is built for wideband signal transfer, low coloration and stable performance into an MM input with 47k plus 150 pF loading. The result can be a detailed, spacious and naturally balanced presentation when used with a suitable cartridge.
In real-world systems, the MCL 1:20 is best matched with low output moving coil cartridges around 0.2 mV to 0.7 mV and internal impedance below 20 ohms. Depending on the exact cartridge specification, models from brands such as Ortofon, Audio-Technica, Lyra and Koetsu may be compatible. For best performance, place the transformer away from power supplies, motors and mains cables, and use short, well-shielded phono cables into a quality MM phonostage. Choose the MCL 1:20 if you want a focused upgrade path for extracting more from a serious MC cartridge.
More information for Denon cartridges: https://www.hi-stands.eu/en/step-up-transformers-for-denon-cartridges/
