Microphone has been tested and works. Only issue seems to be that the windshield has been dented in on the top of the microphone.

Here is some more information from Audio-Technica:
The AT804 is ideal for interviews, sportscasting and for use as the “mono” mic in conjunction with a stereo microphone. Its omnidirectional polar pattern provides natural reproduction of surrounding ambience. The mic’s rugged housing with hardened-steel grille stands up to field use; its internal shock mounting minimizes handling and cable noise.

Specifications
Element: Dynamic
Polar Pattern: Omnidirectional
Frequency Response: 50-15,000 Hz
Open Circuit Sensitivity: -49 dB (3.5 mV) re 1V at 1 Pa
Weight: 7.5oz (213 g)
Dimensions: 5.94" (151.0 mm) long, 1.42" (36.0 mm) head diameter
Output Connector: Integral 3-pin XLRM-type
Accessories: AT8405a stand clamp for 5/8"-27 threaded stands; soft protective pouch
Audio-Technica Case Style: S8

PLEASE ASK ANY QUESTIONS THAT YOU HAVE BEFORE BUYING!!

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Sat 10am- 4pm CST

Please note that we are closed on Sunday-Monday. Orders placed over the weekend will ship on Tuesday.

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Midwest Drum & Percussion
Wichita, Kansas