The Bose 6 Disc CD changer magazine is designed for use with the Lifestyle Model 20, 25, 30, and 50 systems. It has a capacity of 6 CDs and is compatible with CD formats, making it a convenient addition to home audio setups. The black magazine is a Type 6 disc magazine, specifically for use with Bose CD changers, providing easy access to a selection of CDs for uninterrupted listening enjoyment.