Jeff Ament

Jeff is known for using this on various songs. It can be heard very famously on 'Jeremy' on the 'Ten' album. It is also noticeable on 'Why Go', also from Ten.

Jeff Ament teamed up with Mike Lull in 2012 to create a signature model. The bass features a 20% oversized body, but thinner body thickness than standard Mike Lull T4 models, along with a reverse headstock. Jeff Ament personally chose all custom colors, finish, and wood configurations.

In this photo, Jeff Ament is playing a natural finish Music Man Stingray Bass.

A Warmoth Jazz body, Bartolini pickups, Fender tuners and an ESP neck were all assembled for Jeff by Mike Lull to make the bass that was used on most of the songs on Ten. (Including Even Flow, Alive, Black and several others.)

Pictured is Jeff holding a Fender P Bass

During a live performance, Pearl Jam's bassist Jeff Ament is seen playing his Wal Mk II Fretless Bass. This is one of the two Wal fretless bass guitars he owns, as noted in the source from CFOX.

Can be seen on Jeff's pedal board at http://giventowail.com/site/img/gear/jeff/jeff_board.jpg

In this photo, Jeff is playing a black ES-335.

"You may know every word to a song that Jeff Ament wrote with his band, Pearl Jam... But you probably don't know that he is a collector of bright orange guitars. He owns BelAire #110. And yes, it is orange."

In the photo, Jeff Ament is using his customized Modulus VJ4 bass, which he modified to suit his punk style. He is known to have played this model between 2000 and 2010.

This rig diagram states that Jeff Ament’s main studio bass in 1998 was a 1959 sunburst Fender Jazz Bass.

In this article on Amptweaker's official website, there is a quote of Jeff Ament, bassist with Pearl Jam, saying, "The most organic overdrive bass box I've ever used, bottom end for days!"

You can see Ament play a late 70's Ibanez Rocket Roll bass when Pearl Jam Play Alive at the home shows in Seattle (2018)

Can be seen on Jeff's rack at http://giventowail.com/site/img/gear/jeff/jeff_rack.jpg

In this photo on far left Jeff is playing a Non Reverse Thunderbird whilst singing.

top right on his pedalboard: https://www.instagram.com/p/BxXjzZcFT4R/

"There are a couple pedals I use, like the Tech 21 Dug Pinnick, which has an incredible sound to it."

According to this interview, Jeff Ament uses Way Huge Swollen Pickle (although it says "Swamp Pickle" on the website, which is a mistake).

Can be seen on Jeff's pedal board at http://giventowail.com/site/img/gear/jeff/jeff_board.jpg

Can be seen on Jeff's pedal board at http://giventowail.com/site/img/gear/jeff/jeff_board.jpg

Played during 1992 Pearl Jam MTV Unplugged performance

Can be seen on Jeff's pedal board at http://giventowail.com/site/img/gear/jeff/jeff_board.jpg

At 0:29 You can see a stack of SWR cabs behind Jeff during this 1992 live performance of the song "Deep" of the Ten album.

Can be seen on Jeff's pedal board at http://giventowail.com/site/img/gear/jeff/jeff_board.jpg

Can be seen on Jeff's pedal board at http://giventowail.com/site/img/gear/jeff/jeff_board.jpg

Can be seen on Jeff's rack at http://giventowail.com/site/img/gear/jeff/jeff_rack.jpg

Can be seen on Jeff's rack at http://giventowail.com/site/img/gear/jeff/jeff_rack.jpg

In the user-uploaded photo, Jeff Ament is shown using the Tech 21 SansAmp Classic distortion effects pedal.

Jeff Ament is frequently seen using a Carruthers Guitars CB5 Bass in various live performances and studio sessions, as evidenced by numerous images and videos, including a user-uploaded photo on Fretlessbass.

Jeff can be seen using the Washburn AB 20 in smoke grey during the song "Alive", MTV unplugged in 1992. at 4:39 the body is pretty clarely visable. it has the lines and not the soundhole and at 0:46 you can see the washburn headstock.

https://www.vendio.com/stores/MidnightRecords/item/guitar-acoustic-electric/washburn-4-string-bass-guitar-/lid=21976480