Ursprunglig: Vintage Guitar Magazine May 2015. Pandora's Stompboxes, The Weirdest, Wackiest Effects of All Time. The First Gibson L-5.
Översättning: Vintage Guitar Magazine maj 2015. Tone Pump, EVH, KJ Audio, Xotic Effects, David Allen, Korg, Devi Ever. Gitarr noter. HL.77772026.