Mark Pirro (born July 1, 1970) is an American musician (bass guitar), audio engineer, and record producer based in Dallas, Texas.

[10] Pirro performed with Tripping Daisy on Late Night with Conan O'Brien[11] in 1993 as well as supported Def Leppard during the North American portion of the Slang World Tour.

[14] As part of the group, Pirro has toured with David Bowie, played at a Nobel Peace Prize ceremony, been on the MTV Video Music Awards, and performed Sgt.

The Copperphone uses components from vintage communications equipment as well as a mechanical filtering device to achieve a limited bandwidth frequency response similar to that of AM radio and the nostalgic sound of the early days of recording.

[8] The Copperphone has been used by many artists, including Green Day, Queens of the Stone Age, Lou Barlow, Rush, Norah Jones, Jack White, St. Vincent, as well as Grammy Winning producer Jacquire King.