MCoil VTCU · Feron Transformer Core Copper Foil Paper

The MCoil VTCU is our Feron E-core inductor (transformer core) with a copper-foil conductor and paper-based insulator – the powerhouse solution for large inductances at extremely low R_DC.

Feron is not standard transformer sheet metal; it is made of grain-oriented silicon iron in a quality grade optimized for minimum losses and distortion: even at small-signal levels, remagnetization losses and fundamental distortion around the zero crossing remain extremely low, and under load saturation sets in very late, so the inductance remains stable even in high-power operation.

The particularly strong magnetic circuit allows very low DC resistances to be realized, enabling maximum control, level stability and dynamics, especially in the bass and lower midrange; power handling is typically beyond 1000 watts, making it ideal for PA applications and other high-power sections.

Together with the paper, the copper foil forms an exceptionally stable winding assembly that further reduces winding vibrations and thus macro-microphony and minimizes energy losses caused by mechanical movement.

As a result, the component remains mechanically “silent” even at very high levels and does not couple any interfering signal components back into the music signal inductively; the sound gains calm, contour and fine dynamics.

The MCoil VTCU is typically mounted in the cabinet and is the consistent choice when uncompromising performance, minimum R_DC and maximum mechanical calm are to come together.