The MZA900P-4 in-line preamp connects pre-polarized condenser microphones with a 3.5mm jack plug to microphone inputs with 10 – 52 V phantom powering (P12 – P48). It sports an evolution wireless connection on one end and an XLR on the other, giving you the option of wireless or wired applications (phantom power still required from the mixing board). Boasting a switchable gain pad and roll-off filter, it features a two-color LED display for fast signal monitoring. It works great with any or all of these Sennheiser microphones: e 908 B, e 908 D, HSP-2, HSP-4, ME 2, ME 3, ME 4, and the MKE 2 ew gold. Robust metal chassis Switchable gain (0/-12dB) Switchable roll-off filter (125 Hz (-3 dB), 12 dB/oct) Two-color control LED (phantom power, audio peak) Input: Locking 3.5mm stereo jack socket Output: XLR-3M