Are other Sony products, such as Discman's and Mini-Disc's also restricted in terms of noise levels, the same as the HD3 and HD5 are? If so, can they also be derestricted the same way as the HD3 / HD5? I want to derestrict my Sony MZN10 Mini-Disc if possible, as it seems very quiet to me compared to other devices I have had in the past, including my previous Mini-Disc player... Also, when was this stupid European law passed, and what models of Mini-Disc / Walkman are affected by it? I have a Sony D-EJ01 Discman from the early 2000's and that seems very loud, so i'm guessing this law is a recent thing circa maybe 2001 / 2002 / 2003??? Are mobile phones also governed by the same law?