An unusual SegaSaturn accessory: The 3RADD – A sound enhancer with SRS psychoacoustic technology, read a review on this japanese blog. A scan of the manual.
The effect with audio sources is quite nice, it boosts the sound and positions it around your head. The technology is used in all kinds of devices and software, e.g. the Windows Media Player (SRS WOW).
The imprint on the PCB reveals that this is actually the Game Gizmo 3D (or 3-D) by Calypso Micro Products. This is what a found with the new information:
Continue reading 3RADD – The 3-D Sound For Video Games And PCs