A method of acquiring an amplified biopotential VP with a measurement system comprising (i) a sensor device comprising at least one sensor with a differential amplifier, and (ii) a processing device comprising at least one sensor input, wherein during use, the at least one sensor is electrically connected with the at least one sensor input, wherein the differential amplifier comprises
- a first operational amplifier with an input connected to the reference potential Vref,
- a second operational amplifier with an input connected to the reference potential Vref,
- wherein a further input of the second operational amplifier is connected to an output of the first operational amplifier,
- wherein a second operational amplifier output is connected in parallel with the measured biopotential Vp, forming a feedback loop with the first operational amplifier,
- and wherein the differential amplifier fluffier comprises a low-pass filter arranged to filter die biopotential Vp prior to entering the first operational amplifier, and a high-pass filter in combination with the second operational amplifier,
- the method comprising measuring a biopotential Vp at a measurement portion of a body using the at least one sensor by
- (a) providing a reference potential Vref to a reference portion of the body;
- (b) providing the measured biopotential Vp and the reference potential Vref to the differential amplifier;
- and
- (c) generating the amplified biopotential VP by the differential amplifier based on a potential difference between the measured biopotential Vp and the reference potential Vref.