A better understanding of the mechanisms located at the solid/electrolyte interface is becomingessential to the development of new applications in the electrochemical fields. The fast quartz crystalmicrobalance is an attractive and powerful gravimetric sensor which can be used in the dynamicregime to determine a mass/potential transfer function. The principle is equivalent to classicalelectrochemical impedance measurements; the only difference is the determination of mass changesgiven by the quartz crystal microbalance rather than current changes following sine wavemodulations of the applied potential. This function appears very well adapted to characterize ionicexchanges at the electrochemical interface. Frequency/voltage converters are the key devices intranslating the microbalance frequency response in terms of a continuous voltage change. The latterallows the transfer function to be obtained via a frequency response analyzer. Different converterswere tested in this work in order to improve the performances of the experimental setup.