D-11

The D-11 is a straightforward full-size portable CD player from the early 1990s that sat in the more accessible part of Sony's lineup once the format had become ordinary. It ran on four AA batteries and used a sturdy overhead clamp mechanism inside the chunkier proportions that still carried over a lot from late-1980s design, with basic features like repeat modes, shuffle, Mega Bass, and line out covering most of what buyers actually expected.

By 1990, portable CD no longer needed to announce itself as something new. The D-11 still belonged to the pre-buffer world, so it asked to be treated like a spinning optical device instead of something you could throw around carelessly. That gives it a slightly older feel than what would follow almost immediately after.