A preamplifier arrangement for a drum microphone, in which drum the microphone is arranged inside the drum and wherein the microphone is connected to a preamplifier, characterized in that the preamplifier is secured to the side wall or bottom of the resonance chamber of the drum via a mounting arrangement comprising a threaded part, which is fastened to the preamplifier and fitted through a hole in the side wall or bottom, and a counterpart for it.