According to the Marshall Artist Page of Phil he is using an 1959RR Randy Rhoads Signature head. His Guitar Tech Roger DeSouza also said: "And I remember listening to Nick Bowcott playing the 1959RR for me at a NAMM a couple of years ago. I went and got Phil 2 of those right after that." https://marshallamps.com/live-for-music/news/tech-interview-roger-desouza-motorhead/more
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