Trevor Dunn

This photo shows Trevor Dunn playing his customized 1991 Alembic 5-string Europa bass guitar. On his official site, he talks about the details of how he came to own it and how he customized it:

"So I met this guy at a Bungle show who happened to work for Alembic. He got me a good deal and brought me to the factory up in Santa Rosa, California where I was able to pick out the actual pieces of maple that would be used on the front of the body. Since it was being made from scratch I customized it in a couple ways: I had them refrain from putting dots on face of the ebony fretboard. It looks cool but it really messes with your eyes and took me a while to get used to. Luckily there are dots on the side of the fretboard. I also had them use a left-handed head-stock for that Hendrix look. Unfortunately this puts the E-string tuning peg out of the reach of my stumpy little arms. Oh well, there's no other bass in the world like this. I used it on Bungle's DV & CA cds as well as Zorn's The Gift, but I don't play it that much these days." – Trevor Dunn on his 1991 Alembic 5-string Europa

This photo shows Trevor Dunn performing live and playing his 1975 Fender Precision bass guitar. On his official website he says:

"Around 1998 I got the vintage bug and decided that I had to have a Fender P-bass. I went to Univibe in Berkeley where they had two. I picked this one up and it felt the best so I bought it. It has since been my main ax. I had a BadAss bridge put on and I had the nut and bridge at the E-string cut to fit a low B-string. In Fantomas I string it B-E-A-D, but for everything else I use regular tuning. Somewhere along the line I decided to start putting butterfly stickers on it--maybe out of contrast to the music I was playing. So, I call this my Butterfly Bass." – Trevor Dunn on his 1975 Fender Precision, from the GEEKING OUT section of his official website.

Trevor can be seen playing a 1966 Starfire Bass at 1:05 in this video. He talks about this bass on his website, saying, "It records beatifully and feels amazing. I have flatwound strings on right now. I believe it was made in '66 but it seems like most Starfires from that year have the neck pick-up whereas mine is closer to the bridge. I've used this bass on some of my own film music, Zorn's The Dreamers and some stuff with Yuka Honda."

"The strings are made out of silicone and sort of look like snot, so I started calling it the Booger Bass. I used it on Bungle's Golem," says Trevor, about his Guild Ashbory, which Trevor's dad bought him in the late 80's.

In this picture, Trevor Dunn can be seen playing a Peavey Foundation FL.

It can also be seen in this performance at 36:37 in this 1992 performance: https://youtu.be/81TsYby80Tw?si=bMwna_ztE-pP3p7U&t=2197

In early Mr. Bungle, Trevor appeared to play an Ibanez Proline PL5050.

Dunn also references his Proline on his website: https://www.trevordunn.net/copia-verborum/i2nqtvfwgpdm340mfvjrf3951eny6k