I first read about the Wapin bridge many years ago and being a resident in Malaysia, it is near impossible to get this modification. It seems very appealing as I am one that looks for enhancement to the instrument rather than keeping things as intended by the manufacturer. After scouting through the internet, I bought a used 1970 NY Steinway D from the US and had it rebuilt there, completed and shipped across the globe in 2016. Needless to say, I took the advantage and had the Wapin modification. Unexpectly the inventor Michael lives in the same city where my piano was rebuilt!!
As a player or even a listener, the sound floats out of the piano much easier and there seems to be very little restrain from fingers to the sound. Literally, there is almost a direct path from the brain to the sound, by passing the mechanical action and string/bridge/soundboard. The modification enhances the performance of the instrument, perhaps the way the instrument should have been in the first place, but never got to this point with the conventional bridge pin set up. With the sound floating out of the instrument, it seems like there is lesser effort in making the piano sing. In addition, more sound out of the piano, clean sound, not just any sound. A high level pianist commented that he could hear the intended dissonances of the piano writing much better.
Does that make me play or interpret music differently? Yes, due to the singing quality, I can afford not to push the phrase through so quickly and take a little more time as the piano allows me to do so.
Enjoying the effortless, floating, singing tone from the moment the hammers hit the strings, has never been better, not because it is a Steinway D, but because it has wapin on it.