The DP-II mechanism (Dual Pro-II) is an upgraded version of Sony's original DP mechanism for wide-window half tapes.

Promises smooth and stable tape running. Equipped with DP-II mechanism.
Sony's unique DP mechanism is combined with the DP-II mechanism (Dual Protection Mechanism sheet), which has been upgraded for use with wide-window half tapes, to reduce noise and ensure stable running in unison with the tape winding half, which prevents the tape from being driven in two cars.
Advanced design to ensure sound quality Highly rigid hearth adopted.