This is an AKG C451EB condenser microphone. It's not the current C451B model, but a product sold in the 1980s. It's probably already considered vintage. It had several types of microphone capsules, and the system allowed for swapping them. The capsule attached to the item for sale is the CK1, which is unidirectional. It has some signs of use, such as minor scratches, but there are no severe scratches or dents, and considering its manufacturing year, it's in quite good condition. It was only used indoors and stored in a desiccator. There are no operational issues. There are no problems such as extremely low volume or lack of bass, and the low-cut switch also works correctly. In addition to the main unit, the original microphone holder is included.