Selling sE Electronics DM1. Tested once to see if it is functional.
Designed to give +28dB of clean gain to low-output dynamic or ribbon microphones. Does not work with condenser microphones. Ensure that your audio interface has 48V phantom power as the DM1 will use that to power itself.
I've seen that it pairs well with a Shure SM7B.
Product Description from Sweetwater:
Passive dynamic and ribbon microphones sound absolutely incredible. However, these microphones’ naturally low output is a major impediment to using them on quiet sources or during live performances. With the sE Electronics DM1 Dynamite in-line preamp, however, those days are over. This compact unit plugs directly into the output of your microphone. Feed it a little phantom power, and the DM1 delivers +28dB of clean, clear preamplification. In other words, your mic signals hit their destination at an adequate level for proper gain staging. The DM1’s Class A circuitry, high-quality FETs, and low impedance ensure a consistent signal and very low noise — even over long cable runs. Help your mics perform up to their full potential with the sE Electronics DM1 Dynamite.