The DPA 4015A is a perfect fill-in between an omnidirectional and a directional microphone. The off-axis characteristics of this mic are totally linear, a unique quality when it comes to authentic sound reproduction. Any leakage that occurs from off-axis sound sources is still a faithful reproduction of these sounds, just softly attenuated.
 
Sometimes a conventional cardioid pattern just isn’t quite open enough. Recording orchestras, and other ensembles, sometimes require a compromise between blending in the room reverberation and a more precise localization. When recording instruments with complex radiation patterns, the wide cardioid (also known as hemispheric) design covers a greater sound angle and is an excellent choice. This is the ideal mic for recording grand piano, guitar, marimba and percussion, or as a spot mic for groups in a symphony orchestra. Likewise, it is an excellent speech, dubbing, or vocal mic as its enhanced richness on the bass end nicely compliments many voices.
 
As with all of the modular pencil microphones, you can combine the 4015 Wide Cardioid Mic Capsule with any of the DPA  preamps.
 
The MMP-A Mic Preamp is an ultra-transparent, transformerless preamp with active drive for impedance balancing. The MMP-C Compact Mic Preamp is an ultra-compact preamp with active drive for impedance balancing. It has a slightly softer character than the other DPA preamps for pencil mics.
 
Other preamps include the very small form factor types MMP-E Modular Active Cable (XLR output) and MMP-GR/GS Preamp with Modular Active MicroDot Cable for Pencil Microphone, 3 m (9.8 ft) (MMP-GR, MMP-G Modular Active Cable) (MicroDot output), allowing for very slim set-ups. The MMP-G even allows you to match a larger microphone directly to a wireless transmitter.