 The Copperphone is manufactured by Pirro and distributed through his company Placid Audio.Placid Audio microphones have been used by many artists including Green Day, Queens of the Stone Age, Lou Barlow, Rush, Norah Jones, Jack White, St. Vincent, The Bright Light Social Hour, as well as Grammy Winning producer Jacquire King

Mark Pirro designed the first Copperphone while playing with The Polyphonic Spree.He wanted to produce a "telephone" voice effect for the group's lead singer Tim DeLaughter.