Bono said in the book Race Of Angels
: "I remember getting Edge an echo unit and saying, 'Use this, because this will get us to another place. This will get us outside of the concrete - into the abstract.'
I just knew that the echo unit would do that. Atmospheres - we were very interested in atmospheric music. Punk started to look incredibly limited. It seemed so rigid, not just musically, but it started to have a rulebook and codes. And then I remember Joy Division came along, and I really related to that, because of the moods and atmosphere. And David Bowie's Low
- that was very interesting. That's where we were. So we started with that thing."
Bertrand - Paris, France