The pianissimo are a proven technique, they are comfortable in the ducts as soft silicone hollow. J uses pianissimo - 15 dB and my time sound spectrum is rather natural, the stamp is but very little change, it surprises from since st sound attenuated but it gradually adapts sy, it s naturally recalibrate his feelings Hearing !!! A Paris 15eme, acoustic lab audiologys the offers to 158 € the pair price floor, I have not found cheaper elsewhere. I think that once we tried that, it is s happening more and more is envisaged to work without.