About: http://webisa.webdatacommons.org/166493050

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	There is no such thing as a mandatory upgrade -- especially, if like me, you think the HD580/600s sound wonderful already.
http://www.w3.org/ns/prov#wasQuotedFrom	head-fi.org