In a lot of ways, the CDP S350 replaces Casio’s massively popular Privia PX-160. Casio CDP S350 – Digital Piano Background Let’s dive into this review right away by starting with some background information. If you’re looking for an affordable, highly portable 88-note digital piano with weighted keys, tons of sound and features like auto accompaniment, the new Casio CDP S350 compact digital piano makes a compelling case.Ĭasio always has a big presence in the entry-level digital piano market, and the CDP S350 is sure to be no exception.