From the description in this video on YouTube, they said: "And as they say, the rest is history. For this one, he uses Ernie Ball Hybrid Slinkys (.009–.046, for all vibrato-equipped guitars) and always grabs Dunlop Tortex Jazz III picks."

In this June 2022 rig rundown with Thomann's Guitar & Basses, at 2:24, Steve Vai's guitar tech Doug pulls down an Ibanez John Scofield Hollowbody guitar stating:

[Doug]: "This is a song-specific guitar, this is the John Scofield Ibanez model for "Little Pretty" and it's got a great sound, Steve really likes the way this guitar sounds, and for that song it's just perfect. But y'know normal, this one has a slightly heavier bottom string, it's 9-46, but then a conventional normal.

[Thomann]: Still tuned standard? E-Standard?

[Doug]: Still tuned standard... with a very puffy strap.

This website claims that since 1989, Beck has used Ernie Ball guitar strings in gauges 9-46, 10-48, and 11-48.

"Jeff’s Guitar Setup"

"This is how Jeff likes his strats set up. The info in the table below info was taken from Dan Erlewine’s book “How To Make Your Electric Guitar Play Great”, Second edition, 2011."

"Some of Jeff’s Todd Krause master-built guitars were examined by Dan, one of which had the strings removed. This allowed Dan to take precise measurements."

Measurement: | Dimensions:

Neck Scale: 25 1/2 ” (648 mm)

Neck Radius: Compound radius: 9 12″ (241 mm) at nut to 12″ (305 mm) at end of fretboard

Bridge Saddle Radius: Between 12″ (305 mm) and 14′ (356 mm)

Fret Size: .098′ X .050″ (2.47 mm X 1.26 mm)

**Strings:
1989: Ernie Ball 9s (9, 11, 16, 26, 36, 46)

2011: Ernie Ball 10s (10, 13, 17, 26, 38, 48)** sometimes increasing string guage to 11s

Neck Relief: 1989: Straight to .006″ relief

Nut: Wilkinson 1st generation nut (slanted on bass side)

Nut height: set up so that with the strings pressed at the 2nd fret there is just enough clearance over the 1st fret to see daylight (.11″ bass side & .006′ treble side).

Neck Action in 1989: At 12th fret – 1/16″ (1.6 mm) bass side 3/64″ (1.2 mm) treble side

Neck Action in 2000: At 15th fret – 1/16″ (1.6 mm) bass side 1/16″ (1.6 mm) treble side

Pole Piece Height: The pole piece heights for the neck, middle, and bridge pickups were all “touching*” (see below) on the bass side and 3/64″ (1.2 mm).

• With the strings off the guitar, Dan laid his straightedge on the frets and then measured the clearance between the straightedge and the polepieces. I don’t really see how this makes the pole piece measurements useful.

"So, you see, there is no real magic here. Jeff can play on any guitar you give him, and it will sound like him. Even when he plays a guitar without a whammy bar, like a Tele, you can recognize his playing almost immediately!"

"Check your guitar measurements against the info in this table to see if any adjustments might improve your playing. Don’t make adjustments to your guitar if you don’t know what you are doing. It’s better to bring it to a qualified guitar technician."

On this Instagram story, posted by Billie Eilish, we can see on the table the Ernie Ball Hybrid Slinky 9-46 strings, which tells us that Finneas is probably using those strings as he’s the one using electric guitar. It was posted on January 3rd 2024. The Instagram Story shows a Be Real taken by Billie Eilish recording in her home studio (alongside with Finneas of course). Finneas never talked during interviews about which strings he uses whether it is for bass, guitar or acoustic guitar. On the Ernie Ball blog, released on January 27th 2020, we can read “ Finneas relies on Hybrid Slinky electric guitar strings”. Hence, this picture from Billie Eilish instagram account confirms it.

Adrian Smith uses Ernie Ball Hybrid Slinky Guitar Strings (9-46), known for their suitability in delivering clear solos and robust bass riffs, as featured on the Ernie Ball artists page.

In an article by Premier Guitar, John Fogerty is mentioned as using Ernie Ball Hybrid Slinky Guitar Strings (9-46) in the equipment section.

From metalsucks.net: I use Ernie Ball .09-.46 strings with a .66 on the bottom, and I use Jim Dunlop 2mm Sharpie picks

In 15:03 Jason's tech says that for the leads uses Hybrid Slinky.

In the Guitar Bonedo YouTube video titled "Tommy Thayer - Modern Day Delilah Guitar Tutorial," Tommy Thayer discusses his use of Ernie Ball Hybrid Slinky Guitar Strings (9-46). He mentions preferring the lighter top strings for ease of play, although he has considered switching to a straight 10-46 gauge due to occasionally breaking E-strings.

25 seconds in, Jeff says the brand, gauge, official name and the colour of the package. It can’t be anything else.

In a 2008 video titled "El Musiquiatra Presenta: Ricardo Mollo parte 1" by Ariel Pozzo, Ernie Ball Hybrid Slinky Guitar Strings (9-46) are visible on the floor of Ricardo Mollo's studio next to his pedals, indicating their use in his setup.

This 2019 interview with Premier Guitar magazine features a sidebar with a list of Andy's then-current guitar rig. It lists the Ernie Ball 2222 Hybrid Slinky (.009–.046) as his prefered strings.