This is essentially new "Old Stock" 
Audio-Technica’s high-performance AE4100 cardioid dynamic vocal microphone delivers aggressive sound that stays up-front in the mix. Optimized for the stage, the microphone features superior anti-shock engineering for minimum handling noise. Its rugged construction is engineered to stand up to the rigors of touring. For ultimate protection against vocal plosives, the mic’s hardened-steel outer grille is lined with fine steel mesh and a layer of open-cell foam. A foam disk positioned on top of the element assembly provides the final layer of “pop” protection.

• Destined to be the next classic
• Optimized for the stage with excellent isolation properties
• The back-cavity assembly “floats” inside the handle shell, providing exceptional isolation from handling noise
• Superior anti-shock engineering for low handling noise
• Multi-stage grille design offers excellent protection against plosives and sibilance without compromising high-frequency clarity
• Cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source
• Outstanding pop protection
• Quiet-Flex™ stand clamp provides silent, flexible microphone positioning
• Tough, durable, resilient – built for the road