Synergy Fortin Killer Kali ModuleFORTIN Killer Kali Module DUAL CHANNEL ALL TUBE FORTIN SYNERGY MODULE The Synergy Fortin Killer Kali is an all tube, two channel module designed with Gain connoisseur Mike Fortin. With a pedigree of modifying and designing amps (within the realms of Marshall, Vox, Hi Watt, Randall and Fortin Amplification) that spans well over 30 years, Mike is widely accepted as the harbinger of complex modern high Gain tones. The Killer Kali module is based on the