An arc extinguishing method for extinguishing arcs in a plasma chamber of a plasma system, comprising providing a plasma operating power during a plasma operation to the plasma chamber for generating plasma in the plasma chamber and carrying out a plasma-processing process using the generated plasma, by generating an analogue signal by a digital-to-analogue converter (DAC) and amplifying the generated analogue signal on an amplifier path, monitoring, by an arc detection device, the plasma system for arcs, and in response to detecting an occurrence of an arc, controlling the DAC by the arc detection device such that the generated analogue signal by the DAC is modified.