The final page of this catalog shows the Continental organ alongside other sound equipment: microphones, echo unit, channel mixer and the VOX treble booster:
A miniature "overtone" unit which plugs into the amplifier adding a super extra "zing" to the treble. Inexpensive and easy to use, the VOX Treble Booster brings out the full tonal range of stringed instruments. A real boon to the lead guitarist.
$1250
$1600
$4490
$3099
$1000
$3650
$750
$399
$2999
$1999
$120
$1120
$400
$849
$625
$750
$495
$1250
$880