The Optigan (OPTIcal orGAN) was a sort of adult toy originally made by Mattel in the early 70’s. Basically it was laid out like most home chord organs of the time, but its sound producing mechanism wa
The Optigan (OPTIcal orGAN) was a sort of adult toy originally made by Mattel in the early 70’s. Basically it was laid out like most home chord organs of the time, but its sound producing mechanism wa