In 2000, Sony continued issuing incremental upgrades even as file-based players were gaining obvious momentum. The year’s lineup focused on targeted convenience improvements for the audience that remained.
D-E01
The D-E01 is a portable CD player equipped with a slide-in disc loading mechanism and G-Protection. It features a metal exterior and a remote control display mechanism and does not have a hinged cover. Playback is within the range of a standard CD player. Its structure and operation system are modified. It is positioned as a higher-end model with specialized features.
D-E660
The D-E660 is a portable CD player equipped with an electronic anti-skip mechanism using G-Protection. It is powered by two AA batteries and supports basic CD playback. It has a simple control system and a compact design. Playback is within the range of a standard CD player, making it a mid-range model for portable use. It maintains a basic configuration.
D-F700
The D-F700 is a portable CD player equipped with an FM tuner and G-Protection. It supports both CD playback and radio reception and features remote control operation. Playback is within the range of a standard CD player. It is positioned as a derivative model with a tuner function.
D-E770
The D-E770 is a portable CD player equipped with an electronic anti-skip mechanism using G-Protection. It features remote control operation and supports basic CD playback for portable use. Playback is within the range of a standard CD player, positioning it as a mid-range model. It maintains a basic configuration with specification differences.
D-E888
The D-E888 is a high-end portable CD player equipped with an electronic anti-skip mechanism using G-Protection. It features a refined remote control system and exterior specifications alongside basic CD playback. Playback is within the range of a standard CD player, positioning it as a higher-end model. It maintains a basic configuration with expanded specifications.
D-E999
The D-E999 is a portable CD player equipped with an electronic anti-skip mechanism using G-Protection. It features a lightweight, slim design and supports basic CD playback with battery-powered portability. Playback is within the range of a standard CD player, positioning it as a mid-range model. It maintains a basic configuration.
By 2000, the decline was impossible to miss, yet Sony was still putting effort into small, meaningful improvements. Those choices helped bridge Discman into its closing years, even if they could not reverse its shrinking role.



