Vox Sound Limited Pricelist
For an overview of the formation of "Vox Sound Limited" and its subsequent actions, see this page. The solid state amplifiers, speaker cabinets and other items produced by the company are best found by going to the VSL index page, and clicking on the named models - Defiant, Super Foundation Bass, etc.
This list, published in Beat Instrumental magazine in July 1971, just prior to the main British show of the year(the Associated Instrument Industries Fair) represents the state of affairs around a year after the first pricelist issued by the new company in August 1970 - available here.
Not a great deal has changed. Inflation has certainly had little effect. Amp and speaker covers, along with strings, are not listed. But all the major items are present and correct - except for the Gyrotone rotary speaker units, which seem to have been quietly omitted or very probably dropped from the range.
Curiously the Defiant, mentioned at the head of the piece, is said to be "new" - either some misapprehension, or perhaps a "push" for to keep its sales up.