TODO: History and chronology of models, mods, Tony Frank and Unicord, etc.

TODO: See led-zeppelin.org and WholeLottaLed archives for details.

TODO: See led-zeppelin.org and WholeLottaLed archives for details.

TODO: Jimmy Page Custom Hiwatt details, history and chronology of use, combination with Univox Unidrive UD-50, Unidrive clones (in Tone Chasing section)

See led-zeppelin.org page on Jimmy's Hiwatt

TODO: History and chronology of models, pedals to get this sound (link to Tone Chasing.

Used on the great Denmark TV appearance, as well the Whiskey A Go Go '69.

TODO: See https://web.archive.org/web/20180209035446/http://www.led-zeppelin.org/studio-and-live-gear/1070

TODO: Add info on cabs, especially from led-zeppelin.org and WholeLottaLed archives.