Casio CDP-S90chat_bubble_outlineFrom real comments

Compact size and decent key feel stand out to owners. Multiple commenters highlight the S90's compact, lightweight build as a key selling point, with one noting they picked it up specifically for its compact feel after using a Yamaha P115. Another commenter says the key feel isn't bad despite the piano's small footprint. This portability and playability at a lower price point makes it appealing for casual or space-conscious players.

Key clicking noise is a recurring complaint. Two separate users describe unwanted clicking or tapping sounds coming from the keys, with one noting the noise becomes more noticeable when the volume is turned down. This mechanical noise issue appears across related Casio CDP models as well, suggesting it may be a broader quality concern rather than an isolated unit defect. It's a notable drawback for otherwise satisfied buyers.

Confusion around speaker and volume output persists among potential buyers. Several commenters ask whether the piano has a built-in speaker, whether sound only comes through headphones or a connected device, and why they can't get louder sound despite the volume being maxed. One user explicitly states it doesn't seem to have its own speaker, while another reports no perceptible stereo separation. This ambiguity suggests unclear communication about the piano's audio capabilities.