The Isley Brothers – 3+3 album cover

The Isley Brothers – 3+3

Album 1973

The music gear and equipment used by the artists, producers, engineers, and more involved in the making of the 1973 album 3+3.

Music from 3+3

Gear Used On 3+3

Explore the instruments, equipment, software, and production tools used in the making of The Isley Brothers – 3+3 (1973). Click more on each item to see exactly how it was used.

Effects Pedals used by Ernie Isley on 3+3

Phaser Effects Pedals

Maestro PS-1A Phase Shifter

Avg price: $190.00

Used on 3+3, particularly on "That Lady". There are multiple sources:

The Big Muff Users section of Kit Rae's Big Muff Page

A year after that, the funk/soul scene was hammered with the famous solo from the Isley Brothers hit, (Who's) That Lady, played to perfection by Ernie Isley. There are various accounts of what was actually used in the studio, some sources state it was recorded directly into the mixing board with a Strat and Roger Mayer Octavia, but other sources state it was a Big Muff and Maestro Phase Shifter, and Ernie also used a Big Muff and a Maestro Phase Shifter when playing it live throughout the 1970's (the modulation on the record actually sounds identical to the Maestro too).

(the signal) goes through a Cry Baby wah-wah, a Big Muff fuzz, a Maestro Phase Shifter, and an Octavia made by Roger Mayer. - Ernie isley from Guitar Player, September 1981

“On ‘That Lady’ there was a Big Muff, a Maestro Phase Shifter, and a Fender Twin. That was pretty much it.” - Ernie isley from Vintage Guitar magazine, February 2018

Guitar.com, June 18, 2020

“We were working with the same engineers Stevie Wonder was using on what would become Innervisions,” Ernie begins. “We were working on the record that became 3+3. There was a fuzz box and a phase shifter by Maestro, and that was pretty much it. We took it from there. It was fun.”

Stompbox: 100 Pedals of the World's Greatest Guitarists by Elion Paz

“Stompbox” features actual pedals from celebrated guitarists past and present, including Hendrix’s legendary Fuzz Face, the Maestro PS-1A Phase Shifter used by Ernie Isley, and Marc Bolan’s Vox Clyde McCoy wah-wah. A photo of each pedal is set next to an interview with its owner, and the book broken into sections about history, innovation, design and use cases.

I plugged in, and I discovered the "That Lady" sound right there in Guitar Center. Nobody even turned around. But I knew that I'd discovered a new sound.

Phaser Effects Pedals

Roland AP-7 Jet Phaser

Avg price: $399.00

Catalinbread Effects identifies the Roland AP-7 Jet Phaser as a pedal used by Ernie Isley, citing its use on “Who’s That Lady?” and attributing the song’s lead tone to the Jet Phaser’s characteristic sound.