About: http://webisa.webdatacommons.org/6809072

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	As far as I know there are options for different types of tube but the biggest gains are to be had from getting a 12BH7 from a different manufacturer.
http://www.w3.org/ns/prov#wasQuotedFrom	ultimate-guitar.com