In the final years of Dallas Arbiter's ownership of Vox, it became clear that in order to keep the AC-30 shipping and the company profitable, they needed to cut down on manufacturing costs and use printed circuit boards.
With lessons they'd learned from the Birch-Stolec era PCB construction AC-30s, they decided to mount the tube sockets to the metal chassis rather than on the green phenolic boards as something of a compromise. This construction method proved successful, and is still in use today by a number of tube amp manufacturers, both large and boutique.
A version with an Accutronics spring reverb was also available,
