Whirlwind MD1 Portable
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- MD-1 PORTABLE MIC PREAMP / LINE DRIVER & HEADPHONEÂ MONITOR
A broadcast quality mic preamp 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 unprocessed signal to the output (loop thru) while monitoring it with headphones.
Additional 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:Â
   Mic Mode: 1.5k OhmsÂ
   Line Mode: 10k OhmsÂ
Output Impedance:Â
   600 OhmsÂ
Max Input Signal:Â
   Mic Mode: -4dBmÂ
   Line Mode: +12dBmÂ
Frequency Response:Â
   ±3dBm, 6Hz-25kHzÂ
   -2dBm @ 20HzÂ
   -1dBm @ 20kHzÂ
Maximum Output Level:Â
   +15dB into 2k OhmsÂ
   +26dB into 10k OhmsÂ
   +34dB into 100k OhmsÂ
Phantom Power: +18VDCÂ
Power Requirements: (2) 9V alkaline batteries
