The new Elecrtro-Voice RE320 is a unique hybrid designed from what EV learned form the classic RE20 and RE27N/D. 

It features a unique "Dual Personality" switch which creates two ideal mics in one.  In the left position, it engages what EV calls "InstaKick" for use in broadcast and kick drum application.  The right position is flatter and more natural for other uses.  

Providing balanced and uniform frequency response up to 180° off-axis, the result is always stable and linear tonal performance — even when the sound source is moving around the mic. Ideal for capturing the critical details of voice, amplified, and acoustic instruments, Variable-D capsules deliver impeccably smooth and natural tone on virtually any sound source.

Utilizing the same humbucking coil technology found in the RE20 and RE27N/D to arrest electro magnetic field interference introduced by sources close "to the microphone", the RE320 produces an ultra-quiet signal path free from the hum and buzz found in other dynamic microphones.