Today I found cheap UCOM speakers which had 20khz written on the cover. Should I buy them? Is UCOM a valid brand?
These
http://www.ucom-cn.com/Product/viewprod.asp?id=112
http://www.ucom-cn.com/Product/viewprod.asp?id=113
These
http://www.ucom-cn.com/Product/viewprod.asp?id=112
http://www.ucom-cn.com/Product/viewprod.asp?id=113