The AC-50 Super Twin amp and Transistor Lightweight 30 amps, along with the AC-50 and AC-100 amp heads, grace the back side of the September 1964 JMI Vox amp flyer.
The AC-50 amp head shown in the illustration below appears to have a thick-edged small box cabinet. The text accompanying the drawing indicates that Vox was still offering the single channel AC-50 head configuration with four parallel instrument inputs ( aka "diamond inputs") at the time of this flyer. The dual channel big box AC-50 heads had not yet been released.
Look in the lower right corner of the page. In small type, you will read the folloing code: AF/9.64/5m/FT E./OP. The 9.64 in this sequence of numbers and letter establishes this flyer as printed in September 1964.
Click on the flyer to return to the Vox Catalog Archive Web Page.