RS PREDECESSOR AS WELL-KNOWN FRENCH HORN OEM factory. Its factory owner is an avid sound enthusiast, officially named after the owner’s name (Ralf Seider RS) since 1999. RS Horns are highly efficient, bright and analytical in tone, rich in detail, ornate and rich in vocals, and powerful at low frequencies. The French people’s pursuit and understanding of music have been brought into full play, which can be called “The sound of French soul”.