It looks like your amp has 1/4" TRS (stereo) jacks for external switching of these features.
You can simply use Insert Cables
to connect directly to the GCX loops for switching.
The first TRS jack on the amp is LEAD/CLEAN with LEAD on tip, CLEAN on ring. The other TRS jack is REVERB/BOOST with REVERB on tip, and BOOST on ring.
From pg 13 of the amp's manual:
8. FOOTSWITCH CONNECTIONS All Ironheart amps are equipped with a 5 pin DIN socket for the connection of the
supplied FS4-IRT footswitch, allowing remote operation of the following functions: Channel, Clean, Reverb, and Boost. Two 1/4"
stereo jack sockets are also provided for the connection of an FS2 or equivalent footswitch, with Channel & Clean on one socket,
and Reverb & Boost on the other.
In order to use any footswitches, set Pre-Boost and Clean switches to ON, and Channel to Lead.