The present invention relates to an apparatus for generating a non-thermal atmospheric pressure plasma, which apparatus has a first piezoelectric transformer (1), a second piezoelectric transformer (101) and a drive circuit which is configured to apply an input voltage to each of the piezoelectric transformers (1, 101), wherein the input voltage which is applied to the first transformer (1) is phase-shifted through 90D in relation to the input voltage which is applied to the second transformer (101). The invention further relates to a method for generating a non-thermal atmospheric pressure plasma by means of at least one first piezoelectric transformer (1) and one second piezoelectric transformer (101).