Check the listing for details. Niles HDL-4 High Definition Speaker Selection System 4 Pair Speaker Selector. Color: Black, Condition: Used. Listed at 17.00 USD. The Niles HDL-4 High Definition Speaker Selection System is a 4 pair speaker selector designed for home audio setups. With a sleek black design, this Niles product is compatible with universal speaker brands and specifically designed to work with the Niles HDL-4 model. This speaker selector allows for easy and convenient switching between different speaker pairs, allowing users to enjoy their favorite music or movies with high-quality sound and clear audio reproduction. Ideal for home audio enthusiasts looking to enhance their listening experience.