The VSEL AC-30 Top Boost cabinet was constructed from lock jointed 13 ply, 3/4" baltic birch plywood. Aside from increasing the number of "slim" air vents on the top of the cabinet from three to six and the switch to a horizontal "Thomas" style Vox logo, the VSEL cabinet was largely unchanged from JMI era AC-30 amps.
The cabinet was covered in traditional black basket weave vinyl with gold piping accents. The front panel featured black diamond Vox grill. By this time brown Vox grill had been discontinued.
A "Top Boost 30" model logo was affixed to the lower right corner of the grill. A rather crude looking silk screened serial plate was mounted to the upper rear panel.
A single button Vox "egg" foot switch remotely enabled the vibrato and tremolo effect. The pedal cable was hard wired to the chassis.
The VSEL era AC-30 Top Boost amplifier was equipped with a pair of Celestion G12 12" Silver Alnico speakers. A gold foil Vox sticker sticker, still bearing the "JMI" logo, was applied to the magnet covers.