SE Electronics SE-DM1 Dynamite Active Inline Microphone PreamplifierThe DM1 Dynamite Active Inline Microphone Preamplifier from sE Electronics is an active inline preamp intended to be inserted between a passive ribbon or dynamic microphone and a microphone preamplifier (sold separately). It can be used to deliver a robust 28 dB of gain to boost the audio signal of a passive mic, which improves the level to a preamplifier without adding noise or coloration. With a sophisticated class A design and high grade FETs, the