D-E401

The D-E401 stayed very close to the D-E400, with only minor changes in finish, controls, or included accessories while sharing the same compact, battery-efficient platform built around ESP2 buffering. It is less a new player than a compact variation on one Sony already understood perfectly well.

That kind of incremental variation had become normal by the late 1990s. The D-E401 is part of the shelf-filling phase of the line, where compact differences helped keep the range feeling current without touching the core hardware. These models can look repetitive now, but that repetition is part of the strategy.