Kitchen Sync
The Kitchen Sync is a dual time base corrector for the Amiga, which plugs into an ISA slot. It doesn't require active ISA slots (eg Bridgeboard) as it only uses them for power. This card is also compatible with PCs.
Thanks to Ed Joseph
Dunno bout the 15 pin stuff though. TBCs are for making your video picture stable afaik. Essential for the product to look any good...