Abgleich-Generator (ZF 455 kHz)

Stereo headphones are usually connected to the loudspeaker outputs of the power amp via an attenuator. Although this represents the cheapest solution, it does suffer from two significant drawbacks: if the loudspeakers are also switched on whilst the headphones are being used, it is impossible to vary the signal level of the headphones independently of the loudspeakers; secondly, as a result of the output impedance of the attenuator, the damping factor of the system is reduced, which adversely affects the bass reproduction of the headphones.