The design of the entire series is characterized by egg-like roundness, while each keyboard has a panel design and body colors distinct from the others. The PSS-E30 a pure white body, and the PSS-F30 features a pleasing interplay between the yellow and orange panels. Meanwhile, the PSS-A50 is punctuated by metallic red, creating a cool, sophisticated impression.
The speaker grill is slightly recessed into the body to foster a sense of unity with the body despite the design techniques used to differentiate between zones. The radial pattern of the speaker holes elicits the image of the sound emanating into the surroundings.
The PSS-F30 is a compact, lightweight version of the PSR-F51, a popular choice for music lessons, and has all the same functions. Although the Song and Voice lists are simplified, the UI emulates that of the F51 to bring the familiar playing experience from the stage and the studio into the home.
The round theme of the design was inspired by the image of a person carrying the keyboard or playing it in their lap. The matte body is smooth to the touch and feels pleasant in the hands, and is angled toward the player in such a way as to gently beckon them to start playing.