From the item description on Amiga Hardware Database:
-allows the use of multisync monitors while the Amiga is in genlock mode
-in genlock mode the horizontal and vertical sync signals are set to 7.8 kHz on the Amiga video port - these signals are not used by single scan monitors, but are required for multiscan monitors
-when the Sync Strainer senses a genlock condition (as when the Video Toaster is started), it creates new H- and V-sync's from Composite sync
-acts as a simple buffer for H- and V-sync when the Amiga puts out 15.7 kHz or 31.4 kHz horizontal scan rate
-automatically switches between the various scan modes
-a 2" × 3" × 1/2" module which connects to the 23 pin RGB connector
-available with DB9 or HD15 VGA output connectors
-works with any genlock which does not use the 23 pin RGB port
-the Sync Strainer is not a scandoubler, the analog RGB signal is passed through unchanged
In short, you don't need it, send it to me and I won't have to snuff your kittycat.
