DPA - 3521 Compact Stereo Kit w. cardioid mics - The 3521 is a complete stereo kit with two 4021 Compact Cardioid Microphones carefully matched within ±1 dB on frequency response, sensitivity and self-noise.

DPA - 3552 Compact Stereo Kit w. omnidirectional mics - The 3552 is a complete stereo kit with two carefully matched (within 1 dB) 4052 Compact Omni Microphones. Together with the accessories, this kit is designed especially for low profile mounting directly inside a piano. The goosenecks can also be mounted directly on microphone stands for various A-B stereo applications such as a full orchestra in a concert hall, choirs and other ambient recordings.