Yamaha YDPS54 88-Note, Weighted Action Console Digital Piano - Black Rupert Neve Designs there are two internal switches

there are two internal switches that disable the Direct Out and ¼” out buffered bypass for true ¼” out bypass mode

So as the input signal increases past threshold

• Robust construction for the most demanding applications

Very affordable

Yamaha YDPS54 88-Note, Weighted Action Console Digital Piano - Black Rupert Neve Designs there are two internal switchesDesigned beginner to advanced pianists, the YDP S54 features the sound of the flagship Yamaha CFX concert grand piano, and the touch of the revered Graded Hammer 3 (GH3) keyboard with synthetic ebony and ivory key tops. The YDP S54 features a slim design, making it an ideal choice for those with space constraints, such as college students or people living in smaller apartments. Connecting to the Smart Pianist app for iOS adds a graphic user interface