Here's some more info. Sonnet used to advertise their quad doubler for the Amiga market in Amiga World Magazine back in 92-94ish time frame. A few years back I purchased one off of e-bay for my A4000. But due to the way the socket was mounted on the version I had I was unable to use it. When it was mounted to the 3640 the rest of the quad doubler hung over and covered most of the daughter board slot. So it was either the daughter board or the quad doubler... The doubler is in the garage collecting dust.
Just for fun I called Sonnet to ask them about the design change and by this time tech support didn’t even know what an Amiga was.
