Check the listing for details. Shure MVX2U XLR-to-USB Audio Interface. Condition: New. Listed at 139.00 USD. An Interface and Activator in One Device The Shure MVX2U is two prime devices in one: First, it’s an in-line microphone activator with +60dB of gain that can add new life to dynamic mics with lower-volume outputs and Dark, Natural, or Bright tone settings. Second, the MVX2U is an XLR-to-USB audio interface with +48-volt phantom power — perfect for condenser mics. Sweetwater studio engineers agree that the Shure MVX2U's compact design, Auto Level mode, Real-time Denoiser, and Digital Popper Stopper make it ideal for a variety of creators, adding instant consistency to your audio. Plus, its 3.5mm headphone jack provides convenient monitoring with zero latency. Throw in configurable DSP via the ShurePlus MOTIV app, and you have one seriously value-packed device in the Shure MVX2U.