The Rocktron Hush SuperC Stereo Noise Exterminator is a signal processor designed to eliminate unwanted noise from audio signals. It is a rack-mounted unit suitable for use in professional audio setups and musical performances. The device is manufactured by Rocktron, a well-known brand in the music industry. The Hush SuperC is a stereo unit, meaning it can process two audio channels simultaneously. Its effectiveness in reducing noise makes it a valuable tool for musicians and audio engineers alike.