The biggest feature of the Lundar transformer is that the winding is divided into separate windings. The primary / secondary impedance can be selected by changing the combination of the split windings. In addition, the transmission performance of the transformer is greatly affected by the winding structure. Since the Lundar transformer always uses all the windings regardless of the impedance selection, the optimum winding structure can be maintained. The single output transformer has an air gap optimized for the bias current value. For the best sound quality, use it within the range that does not exceed the allowable DC current value described in the type name.