Robert Conrad Flynn (born Lawrence Matthew Cardine; July 19, 1967)[1] is an American musician best known as the lead vocalist and rhythm guitarist for heavy metal band Machine Head.

[7] In honor of Debbie Abono and Ronnie James Dio, Flynn recorded and released for free online a cover of Black Sabbath's "Die Young".

[14] Flynn used two Ibanez strat styled guitars in the early days of Machine Head, a white one used in 1992 until 1993, and a black one covered with stickers which he used to record Burn My Eyes, which was stolen from his home in 2010 along with a Washburn Dimebolt which Dimebag Darrell had once given to him.

For The Blackening tour he used a custom ESP flying V which was identical to, and often mistaken for a Gibson V. By Unto the Locust he was using a more modified version of his earlier ESP/Gibson V, with this one having mirror inlays of the Machine Head logo on the fretboard and headstock.

His new guitar for this period was the Epiphone Love Death Baritone Flying V, along with a custom Explorer, which he occasionally used on the Locust tour.

For the Bloodstone & Diamonds era, Flynn has so far been using several Epiphone Flying V's, including an alternate version of the Love Death V, with this one having a tremolo bar.

Other gear includes a modified Peavey 5150 and an Electro Harmonix Deluxe Electric Mistress flanger pedal.