The BLM6000 Boundary Layer Mount is a unique accessory that enhances the versatility of your DPA Lavalier Microphone. It is a soft piece of durable rubber with a diameter of 75 mm (2.95 in). It has an underside cavity for mounting a DPA 4060, 4061, 4062 or 4063 microphone. Users will benefit from the special characteristics of the surrounding sound field on which the mic is mounted: a 6 dB gain of direct sound and only a 3 dB gain of the diffuse sound. The sound captured has both greater clarity, especially at high frequencies, and speech intelligibility compared to sound captured above the surface. The BLM6000 Boundary Layer Mount can be mounted on all surfaces that reflect sound such as floors, walls or ceilings. Placing a DPA Lavalier Microphone in this little device on the inside lid of an open grand piano also provides a very distinct and crispy sound.