The Shure FP33 field mixer meets the criteria envolved in manufacturing a field mixer rugged enough to handle the elements yet flexible enough for the professional working enviroment. The Shure FP33 is a professional field mixer suitable for electronic news gathering (ENG), field production (EFP), film, television or recording audio for sound design. The FP33 features 3 high quality XLR inputs and stereo (L/R) XLR output. The inputs and outputs can be switched bettween mic and line level signal. There are 3.5mm Monitor and Tape I/O and a choice of either 1/4" TRS phone or 3.5mm headphone output (both are provided). There are panning and level controls on channels 1-3 and the headphone monitor dial provides monitoring of either left or right, dual mono or stereo signal. Both 48V and 12V phantom power is supported and two 9 volt batteries provide up to 8 hours of use. The FP33 is capable of battery powered with standard 9 volt alkaline batteries and A/C power from a Shure PS20 or PS20E Power supply.