Brands
Digital piano brands
Yamaha
P-series models focus on portable setups, ARIUS models on home consoles, and Clavinova CLP models on a more developed home-piano experience. GHC, GHS and GrandTouch names refer to different actions; even GrandTouch-S construction varies by model. Compare exact specifications rather than assuming a family name guarantees wooden keys. Yamaha CFX and Bösendorfer voices also appear in different combinations across the catalog.
Roland
FP models cover portable practice and performance setups, while RP and LX models provide integrated home cabinets. PHA-4 Standard appears in several price tiers; PHA-50 uses a hybrid structure. SuperNATURAL, PureAcoustic and Piano Reality are different sound technologies. A larger model can change controls and speakers without necessarily changing the action, so follow the exact model record.
Kawai
ES models cover portable instruments; CX, CN and CA models address different home-console budgets. Responsive Hammer Lite, Compact, Compact II and III should not be treated as interchangeable actions. The CA501 uses Grand Feel Compact wooden keys. Harmonic Imaging variants and speaker arrangements also differ. Compare the complete model, especially where a used KDP instrument is being offered alongside a current CX console.
Casio
Privia PX-S models emphasise slim designs and flexible placement. CELVIANO AP models provide home-console formats, including slim AP-S cabinets. Smart Scaled Hammer Action and Smart Hybrid Hammer Action are distinct constructions. Some Bluetooth functions use the supplied WU-BT10 adapter. Check the exact instrument and bundle rather than assuming the same accessory package or action across the range.