Rob Arnold (born January 3, 1980) was the lead guitarist of the metal band Chimaira and later the rhythm guitarist of the death metal band Six Feet Under. In an interview with Roadrunner Records, he named Kirk Hammett, "Dimebag" Darrell Abbott, Dave Mustaine, Marty Friedman and Kerry King as being influential to his playing style. Some of his favorite bands include Metallica, Megadeth, Slayer, Pantera, Sepultura, and Cannibal Corpse. Rob Arnold was formerly in the band Sanctum, and he later joined Chimaira and became their lead guitarist.
Arnold is endorsed by ESP Guitars and has his own signature model, the RA-600, which has an M body shape based on the ESP LTD m-1000. In Chimaira, Arnold preferred the drop-C tuning (CGCFAD). He also uses custom ESP 7-string guitars, tuned to drop-A (AEADGBE) . Arnold uses a Peavey 6505+ amp head paired with a Mesa Boogie Cabinet. He uses Custom In-Tune Guitar Picks, Dean Markley Blue Steel guitar strings, guitarcable.com cables, a Digitech GSP1101 Processor, an ISP Decimator pedal, a Boss tuner pedal, a Furman power conditioner, a Peavey wireless system, and EMG 81 guitar pickups.