The nuanced touch and response of the grand piano are an essential standard yardstick for piano quality. The AvantGrand offers the player a specially-developed grand piano action that features the same configuration as the action of a real grand. The hammers strike the “strings” from underneath, allowing tiny adjustments to the weight distribution of the hammers, and to the movement of the hammers themselves, for a smoother feel when playing. In addition to a hammer sensor, the AvantGrand employs a non-contact key sensor that has no effect on the movement of the keys, affording excellent recognition of the player's pressure on the keyboard, timing, and the other delicate nuances that affect musical expression. This combination provides an impressive sensitivity for the entire range from pianissimo through to fortissimo, and the ability to translate even the swiftest trills of the pianist with transparency.
With the introduction of the AvantGrand, Yamaha ignited a revolution in the approach to sampling recording and playback of the notes of the actual acoustic piano. Treating the soundboard not simply as a point source of the sound but as a plane, we took samples at four positions, adding the optimum centre and rear locations to the traditional left and right. As a sound source, we carefully selected the best single instrument from among our CFIIIS full concert grand pianos for sampling. The end result of these efforts is that AvantGrand series instruments recreate the original sound of a superb grand piano almost to perfection. Meanwhile, the AvantGrand’s speaker system has been designed to ensure that this sound is heard best at the playing position. A three-way system featuring woofer, mid-range and tweeter speakers reproduce the rich natural resonance of the soundboard accurately. What’s more, each of the low-, mid-, and high-frequency bands has been given its own amplifier to prevent interference between bands. This innovative configuration allows the instrument’s outstanding sound system to reproduce the nuances of each individual note. For even greater sonic accuracy, feature speaker layouts optimized for the size of the instruments.