D-EJ611

The D-EJ611 came from the point when G-Protection had become a practical improvement instead of just a spec sheet addition. It paired stronger shock resistance with a clean, modern body and a control layout that felt more natural in use than the more mechanical players that came before it.

That usability is what defines it. The D-EJ611 is part of the stage where portable CD had finally become reliable enough in motion that the user no longer needed to think about the mechanics behind it. That change shows up clearly here.