I recently purchased a midtier USB audio interface which I found this warning. Would it be safe to assume that the product just uses lead solder? I know there are sensitive analog components here -- if they didn't use leadfree solder is it due to a design choice for audio applications or just because they don't care about ROHS and the European market. From I understand, lead solder is better understood but for most applications, they are equivalent functionally (minus operation in space)?
I am interested if anyone from industry has input on the design choices of lead vs lead free solder.