Utilize the input text as a context reference, choose the right relationship between Walkman and Sony from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

That, in turn, made the products far weaker than anything Sony had produced before: they had none of the dazzle or confidence sense of dominance that the original Walkman had displayed.

Answer: manufacturer