Whirlwind MD-1 Single Channel Portable Microphone Preamplifier and Headphone MonitorThe industry's standard for parabolic, boom, and interview mic situations, the MD 1 is the ideal mic preamp for those who demand studio quality in a rugged, battery operated package. A broadcast quality performs alongside a high performance input transformer to feed the MD 1 high current line driver and headphone monitor amp. An input pad and level control let you adjust for almost any mic or line level signal (up to 60dB of gain). Or pass the