About: http://webisa.webdatacommons.org/280727198

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	The output impedance from the speaker terminals was a moderately high 0.7 ohm over most of the audioband, rising to 0.9 ohm at 20kHz.
http://www.w3.org/ns/prov#wasQuotedFrom	stereophile.com