A classic by now, the CMS Series CK 1 capsule from AKG was a best seller from the moment it was launched in 1969. Comprising a range of interchangeable capsules and preamps as well as then innovative, dedicated accessories, the CMS Series from AKG

The AKG C 451 EB is a modular condenser microphone system with phantom-powered solid state electronics and, most commonly, a CK1 cardioid capsule. Other capsules with different polar patterns and acoustical properties, as well as barrel pads could quickly screw onto the preamp body for different applications. A switchable high-pass filter on the body of the microphone toggles between flat response, 75Hz corner, and 150Hz corner.