Whirlwind MD-1 Microphone Preamp with Line Level Input and Headphone Output

Whirlwind's MD-1 is the industry's standard for parabolic, boom, and interview mic situations, and is the ideal preamp for those ho 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 microphone or line-level signal (up to 60dB of gain). Or pass the unprocessed signal to the output (loop thru) while monitoring it with headphones.

Features

• A separate balanced line level Aux input to the headphone amp for monitoring a program mix, a console foldback or a director's cues
• Headphone volume control and a separate MIX control allow you to adjust the headphone balance between the mic driver section and Aux input
• Built-in 18V phantom power (switchable)
• Steel case with belt clip resists abuse
• Two alkaline 9V batteries are mounted in slide out trays for easy access

Specifications

• Input Impedance
  • Mic Mode: 1.5k Ohms
  • Line Mode: 10k Ohms
• Output Impedance: 600 Ohms
• Max Input Signal
  • Mic Mode: -4dBm
  • Line Mode: +12dBm
• Frequency Response: +3dBm, 6Hz-25kHz / -2dBm @ 20Hz / -1dBm @ 20kHz
• Maximum Output Level: +15dB into 2k Ohms / +26dB into 10k Ohms / +34dB into 100 Ohms
• Phantom Power: +18VDC
• Power Requirements: (2) 9V Alkaline Batteries