Check the listing for details. sE Electronics DM2 TNT 1-channel Active Inline Preamp. Condition: New. Listed at 149.00 USD. A Secret Weapon for Your Passive Ribbon and Dynamic Mics Sweetwater has a toolbox essential for all recording and front-of-house engineers. If you've shied away from using low-output mics you love the sound of because you don't have access to a high-gain preamp, well, those days are over! The sE Electronics DM2 TNT is an active in-line preamp that boosts the signal of your passive ribbon and dynamic mics by a robust 15 or 30dB. You can easily choose from eight different load impedance settings, from 50 ohms to 10 megaohms, to pick the right one for every situation. Inserted between a passive ribbon or dynamic microphone and a mic preamplifier, the DM2 will also reduce the possibility of interference, while providing a healthy level to your preamp — without any added noise or coloration.