In addition. the MResist SUPREME series features acoustic neutrality and music reproduction close to reality. This is due to a special manually applied fire-resistant casting compound which optimally fices and stabilises the resistor winding thus protecting it against microphony effects. In order to maintain high sound quality even at high load. we apply a special copper-nickel alloy as conducting material featuring a positive and extremely low temperature coefficient of only 50ppm/€C. Further details which guarantee that MResist SUPREME resistors are hardly noticeable anymore are the use of non-magnetic materials and welded contacts.