A&H Zed 14 has 6 channel inserts… Zed 18 has 10 channel inserts then there are the Mix Wizard series with more features but more $$…

The inserts are pre EQ…

Insert Jack Socket
Standard 1/4” (6.25mm) Jack socket for unbalanced insert send and
return signals. Wired Tip=send, Ring=return, Sleeve=Chassis.
Nominal level is 0dBu. The insert point is after the 100Hz filter and
before the EQ.