The Rolls HE18 Buzz Off 2-Channel Hum and Buzz Remover is a professional signal processor designed to eliminate hum and buzz from audio signals. With a brand name of Rolls and a model called HE18 BUZZ OFF, this device features a bi-directional line converter function, ensuring high-quality sound with a crossstalk level of over -97 dB. It comes in a sleek black color and offers balanced and unbalanced outputs, making it versatile for various audio setups. Additionally, the item is in perfect condition.