Vox head engineer Dick Denney told me that control panel color was not a big issue to Vox, and if they ran out of one color of control panel, and another color control panel was in stock, they would simply use what they had. He told me that the reddish brown control panels were generally paired with AC-30 amps that had brown Vox grill and that amps with gray control panels generally had black Vox grill.

Dick Denney also told me that they would custom build amps, using control panel and grill color combinations to suit the customer's whims.

I have seen Vox amps with gray control panels that had brown grill, and I have seen Vox amps with black control panels that had brown grill. In my experience, there is no hard and fast rule regarding control panel color.

The right control was a two position switch that selected between the tremolo and vibrato effects. The left control was a three position switch that selected the speed of the vibrato or tremolo.

This amp featured the earlier version of the voltage selector. It had a removable plug used to choose the appropriate mains voltage. Later amps had a rotary switch for voltage selection.