Modeling Engine of Line 6 Spider in Spider V Posted January 23, 2017 I can't seem to find info on the modeling engine either. I did notice that Line 6's Firehawk 1500 online info screams at you that it used the HD modeling engine. The fact that Line 6 is silent the Spider V modeling engine causes me to have to assume that it's older X3 or XT technology. Any clarification Line 6? According to Digital Igloo, the modeling engine in the Spider V series is an updated and reworked version of the Pod Farm modeling engine. I think they started with that version because there are so many different amps modeled, and then massaged them to work with the Spider series.