About: http://webisa.webdatacommons.org/264268767

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	Its output impedance was a moderately low 411 ohms at high and middle frequencies, rising inconsequentially to 426 ohms at 20Hz; both figures are close to the specified 470 ohms.
http://www.w3.org/ns/prov#wasQuotedFrom	stereophile.com