Atari vs Amiga article

[rzookol]

He did mention accelerators in the expansion bay.
16 bit data pipe on a 32 bit 68030. Sounds like something Sinclair would do. On a machine with 8 channel 16 bit sound, a midi interface and DSP.  Crazy hobbling for what was at the time a dream spec machine.

Not only sinclair:
https://www.everymac.com/systems/apple/mac_performa/specs/mac_performa_400.html