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A piano is a big investment, there is no denying that. Whether you choose portable or stationary, there is ££ to be spent. Therefore, doing your research before buying is always going to save money in the long run.
In this blog, I’m going to break down some of the technical language that may arise when you look through different specifications for different pianos or hear from your child’s piano teacher.
Touch-sensitive keys react to touch according to how softly/firmly played.
This means that from the start your child will begin to learn how much pressure to apply to get a louder or softer sound. It is very frustrating for a young child to not have this facility and press lightly but not get any dynamic change to when they press with more velocity.
Most keyboards and pianos can be changed to be either fixed, soft, medium, or hard sensitivity, something that is super for very young children who just don’t yet have the muscle development in their fingers.

An acoustic piano has small lead weights in the makeup of each key, called key leads that affect the weight of each note. In an acoustic piano, lower notes will have heavier key leads than higher keys.
In order to replicate this feel, digital keyboards and pianos have semi or fully-weighted keys, however without the graded hammer action, these will all feel the same weight up and down the keyboard.
The Clavinova CLP series and Arius have weighted keys that are graded.

Graded hammer action relates to the hammer action against the felt in an acoustic piano. Obviously, in a digital piano, this doesn’t happen physically, but the effect has been replicated.
The GHS (graded hammer standard) keyboard is graduated in groups, the bass area is heavy and the treble, light. These are perfectly suited for young beginners. The groupings might be octaves of notes, for example, C1 to C2, or less depending how high the specification is of the instrument.
The GH3 is the same as a GHS but just with an added damper sensor in the hammer action. It also swings back faster so the weight of the key can be felt when played for a second time in quick succession. So obviously better suited to more intermediate/advanced playing.
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Watch Chris's demonstration of the piano sounds on the Yamaha CLP-785 digital piano
The Yamaha CLP 775 and CLP 785 both have Linear graded hammers, this means that each note on the piano is weighted dependent on its position on the piano, so C1 will be weighted differently to D1 and very differently to C or D2.
Ideally, if you can stretch to a piano with graded hammer action as well as the weighted keys, there will be a far more realistic feel to playing.
Don’t forget the team at ePianos are always on hand to answer your questions. Just drop us a line.
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