Este Haim

you can spot the 441 a bunch of times in the video. Este can been seen using it at about the 1min mark.

"Blondie, my ’73 Fender P-Bass. It was kind of a big deal when I got it—I slept with it that whole first week," Este says, when asked about her main bass, in this interview.

In this picture from 2012 we can see Este palying a Gibson EB-3

At 0:56 in this live performance of I Came To Say at the Troubadour, LA in 2009 we can see Este palying a MusicMan StingRay 5

Este Haim is seen playing a fender jazz bass clearly throughout this video.

In this interview with Bass Player, it lists an Ampeg SVT-CL among Este's gear.

In this interview with Bass Player, it states that Este Haim uses a SVT-410HE.

In this artist article by Ampeg, it cites that Este Haim uses an Ampeg Micro-VR Stack.

At 5:34 in this live performance of Let Me Go, at the 2013 iTunes Festival, one can see Este Haim playing a blue Ludwig Vistalite 8x12" Tom.

the video shows them playing a disasembled Ludwig Vistalite kit @ the 3:30min mark in the video.

At the end of this Bass Player article they write that Este uses Ernie Ball Slinkys bass strings.