An overview of Vox amplifier instruction manuals ("Guide to Operation"). It may be possible to pin down the date spans of (2) and (3) more precisely in due course:

1: - 1960 (and probably earlier): a single typescript sheet, half foolscap.

2: - 1961-1963: for the AC30, a small four page booklet with coloured string tie. Normally tied to the amplifier handle along with the VOX tag. An example can be seen on this page.

3: - 1963 to early 1964: a larger four page booklet covering various models, deep blue background: "Operation and Care of your VOX Amplifier" (in white print). In the case of AC30 serial number 14878, this guide was issued along with (4) below.

4: - mid to later 1964: a fold-out booklet, much the same text as (5) below, but with a rudimentary cover: a feint image of an AC30 on a lighter blue background; underneath, "about VOX ..." in white on a dark grey background.

5: - later 1964 to early 1968: the familiar fold-out booklet encompassing the available range, on the cover "about your VOX amplifier". In 1966 "VOX" was set in an oval. The print dates currently known are: December 1964; November 1965; and October 1966.

(3)

(4)

(3) and (4)

(5)

The page for the AC30 in the manual of October 1966.