The Denon DN-951FA is a true professional grade construction with a full complement of user features. Identical in most respects except for the tray-loading system, these two models serve as the workhorse CD players in thousands of radio stations and other professional audio installations around the world. The DN-951FA CD is the cart version, offering top reliability when the CD media is subject to rough handling (for example, in the DJ booth, control room, and similar environments).