I tried out the FA-06 today in my local PMT store in Bristol, England, and was very impressed. However, I immediately noticed that the black keys were more sensitive to touch than the white keys, this being particularly noticeable on the main supernatural grand piano sound, causing black notes played hard to sound too loud and too bright. Has anyone else noticed this? I found that if I played something in C major, using only the white notes, the response of the piano sound was perfect. However, in any other key, the black notes stuck out in volume and brightness too much when hit hard compared to the white keys.
Hopefully this problem will be addressed in a future firmware update. Also on the FA-06, I noticed that repeatedly plugging in and out a pair of headphones (I was comparing two different ones) caused the patch I was playing to go very quiet in volume; when the patch was changed and then returned to, the volume went back to normal. This problem was not specific to the FA-06 - it also happened on the FA-08 which was located above the FA-06 in the PMT store.
I would be interested to hear other forum members' experiences of these issues.