Abstract: A circuit arrangement for compensating for the transmission errors introduced into a desired signal by passage of the signal through a transformer arrangement. The circuit arrangement comprises a phase-shift which is responsive to the output of the secondary of the transformer and which generates a compensating signal whose phase and amplitude are adjusted such that the compensating signal when combined with the desired signal and passed therewith through the transformer substantially cancels the errors in the desired signal resulting from the transformer. The circuit arrangement is further provided with a summer for combining the desired and compensation signals prior to application of the former signal to the transformer.