Clay Gober

Gober's SR5005 can be seen in Polyphias O.D. music video within certain isolated shots of him performing. Some time stamps (note that the shots are quite brief and may need to be paused): 11 secs , 16 ses and 33 secs (medium shots), 21 sec (close up of fret board), 56 secs and 1:12 (rotating shots with good lighting).

As well as that, the golden hardware, matt wenge top and Ibanez SR shape are easily identifiable for the bass in the music video. Addtionally the fretboards oval shaped mother of pearl inlays are visible in close up shts.

He uses it in this playthrough

A visible yet blurry view of Clay's Darkglass B7K pedal appears around 1:20 of the video.

The pedal is also mentioned in Polyphia's AMA on Reddit's /r/progmetal subreddit as part of the answer regarding to the band's live setup. (Source: https://www.reddit.com/r/progmetal/comments/49we3j/when_this_post_is_30_minutes_polyphia_will_be/d0vfx1s)

Can be seen at the beginning of the video

He uses it in this playthrough

He uses this bass in quite a lot of youtube videos

At 1.06 you can see he uses this bass

At 1.22 you can see he uses this pedal

In this picture from Super Chon Bros Tour 2, Clay was using Organge OB1-500 amp with the ampeg 8*10.

At 1.08 you can se he uses this bass

He uses it in this short

Clay Gober is seen using the KIESEL VB5 bass guitar in a photo on his Instagram, where he mentions making new connections while missing his old gear.

At 1.20 you can see he uses this pedal

At 1.22 you can see he uses this pedal

it can be seen in his studio

Clay Gober can be seen using his Ibanez SR5CMLTD Premium for the entirety of Polyphia's Ego Death music video. This same bass can be seen in Clay Gober's video called "ABC Bass" in his personal Youtube channel. https://youtu.be/lBzj5SWF8Gw

Here is a photo I found of him holding a tortex sharp 1.14 mm pick

In this Facebook post by Clay Gober you can see him holding it

Gifted to bandmate Tim Henson by Ibanez for use in his home studio, Clay has used this bass during Polyphia's writing and recording sessions at Henson's home. At 6:15 in the video, Tim clarifies that it's for Clay and that he chose it primarily because it has gold hardware.

Clay used an Olympic white Modern Player Jazz at Unsilent Night in 2012.

Clay is using the Ibanez srms805 multiscale bass live

The black bass hanging on the wall is a Ibanez Iron Label SRMS625EX

Clay Gober is seen utilizing the Ibanez SR4605 Prestige 5-String Bass in Orange Solar Flare (Low Gloss) as he practices his triplet ghost note technique in a video he posted on Twitter. This evidence is directly sourced from a post made by Clay himself.

Clay Gober, the bassist for Polyphia, is seen using a Kiesel Vanquish 5 string Bass in the clip titled "OH Clay | Polyphia" from the music video for "Crush" off their album 'Renaissance', as evidenced by their official YouTube channel.

In the official music video for "ABC feat. Sophia Black" by Polyphia, bassist Clay Gober can be seen using the Ibanez ATK800 Premium.

During the Super Chon Bros Tour 2, a photograph shows bassist Clay Gober using the Ampeg SVT-810E 8x10 Bass Cabinet. The image serves as visual confirmation of his use of this specific equipment.

this photo from twitter Clay shows a Marshall JCM800 2203. He is seeing playing it in Ernie Ball: Big Sound with Polyphia video.

In a screenshot from Clay Gober's Instagram story, a pair of Fishman Fluence Bass Soapbar Pickups can be seen installed in one of his basses.