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.He recently released a Signature Series guitar with ESP Guitars based on his custom models. It is called the ESP LTD RA-600. He also has an instructional DVD available through The Rock House Method which focuses on metal guitar, soloing, riffing, and song writing.Arnold is also the lead guitarist for his band, The Elite, with former Baphomet/ Stemm frontman T.J. Frost and Bleed the Sky drummer Austin D'Amond. They released an EP titled "Ww3" in July 2009.On February 27, 2011, it was announced that Rob along with former Chimaira drummer, Kevin Talley, would be joining the band Six Feet Under.In November 2011, it was confirmed that Rob Arnold will be leaving Chimaira after Chimaira Christmas '11 for personal reasons.On May 22, 2012, Six Feet Under announced that Ola Englund will replace Rob, who has retired from touring. The band still says that Rob will remain a central writing partner and fellow collaborator on future Six Feet Under releases.