Late-1980s European studio with Eventide H3000, Lexicon 224, and AMS delay rack against a desert sunset
Album

U2 / Brian Eno — The Joshua Tree & Achtung Baby

The Effects Rack That Invented a Band's Sound Twice

Between 1987 and 1991, U2 made two of the most influential rock records of the 20th century — and reinvented themselves completely between them. The Joshua Tree was wide-open Americana filtered through delay and reverb; Achtung Baby was industrial-tinged reinvention recorded in a Berlin studio with the wall coming down outside. What connects them is a rack of effects processors and the man who operated them: Brian Eno, alongside engineers Daniel Lanois and Flood.

The Eventide H3000 Harmonizer is a studio effects processor capable of pitch shifting, harmonizing, delay, and modulation — all in real time. Eno and Lanois used it to process The Edge's guitar into the shimmering, cascading textures that define The Joshua Tree. The AMS RMX 1580 delay provided the rhythmic echo patterns that give songs like "Where the Streets Have No Name" their sense of infinite space. And the Lexicon 224 reverb — one of the first digital reverb units and still considered among the finest ever made — created the vast, cathedral-like ambience that became U2's signature. Engineer Kevin Killen documented the signal chain on Gearspace, confirming these specific units.

Engineer Kevin Killen documented the Joshua Tree signal chain on Gearspace, confirming the Eventide H3000, AMS RMX 1580, and Lexicon 224 as central to the production.— Kevin Killen, Gearspace; Equipboard Brian Eno profile

Why It Matters

The gear behind The Joshua Tree and Achtung Baby isn't just historically significant — it's astronomically valuable. Original Lexicon 224 units routinely sell for $3,000–$6,000. Eventide H3000 Harmonizers command $1,200–$2,500. These are the machines that turned a Dublin rock band into the biggest act in the world, then helped them tear that sound apart and rebuild it from scratch in Berlin.

Find the Gear

Eventide H3000 Harmonizer

$1,200 – $2,500

Studio effects processor. Pitch shifting, harmonizing, delay, modulation. The Edge's secret weapon.

Lexicon 224 Digital Reverb

$3,000 – $6,000

One of the first and finest digital reverbs. Cathedral-scale ambience in a rack unit.

Modern Alternatives & Related Gear

Strymon BigSky Reverb Pedal

Modern reverb pedal inspired by the Lexicon legacy. Twelve machine-modeled reverb types in a pedalboard format.

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Eventide H9 Max Harmonizer

The H3000's spiritual successor in pedal form. Every Eventide algorithm in one box.

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The Joshua Tree (Vinyl Remaster)

The remastered 30th-anniversary pressing. Hear what the Lexicon 224 sounds like on vinyl.

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