The DM2 T.N.T is an active inline preamplifier. Compared to its little brother, the DM1, it offers switchable gain from a moderate 15dB to an explosive 30dB and even less noise. Thanks to the variable input load, it gets the most out of the microphone you have.
The DM2 T.N.T is predestined for microphones which, due to their design, only produce a low output level. This is especially the case with large-diaphragm dynamic microphones such as the SM7B or RE 20, or ribbon microphones such as the M160 or R-10. Since many microphone preamps do not provide sufficient gain for such microphones, the DM2 T.N.T is a good alternative to buying a new pre-amp with appropriate gain reserves.
The DM2 delivers a very low noise and natural sounding signal. Of course, every link in the signal chain always involves some losses, but here sE Electronics has really managed to bring a product to market that reduces signal losses to a minimum. So you get their extra gain without losing the specifics of each microphone.