The Pioneer CS-559 is a speaker model produced between 1991 and 1992 in Belgium. It features a sleek black design and was priced approximately at 198 DM at launch. This model is part of a series that includes the CS-559, CS-779, and CS-999, indicating a lineage of speakers designed for quality sound reproduction. Like its counterparts, the CS-559 is designed to provide an immersive listening experience and is suited for various audio setups. Though detailed specifications such as frequency response, impedance, and power handling are not listed, Pioneer speakers from this era typically emphasized high performance and durability, making it a suitable choice for both casual listeners and audio enthusiasts.