The invention relates to a system consisting of a liner (2), which is disposedbetween anamputation stump (1) and a prosthesis shaft (3), and a myoelectronic electrodeunit (4, 5)for detecting myoelectric signals, said electrode unit (4, 5) comprising ameasuring unit(4) disposed on the side of the liner (2) facing the amputation stump (1) anda receivingunit (5) disposed on the side of the liner (2) facing away from the amputationstump (1).Furthermore, the measuring unit (4) comprises a transmitter (46) for wirelesstransmission of the myoelectric signals to the receiving unit (5).