This vintage channel strip can be seen in a picture that Joel shared to his Instagram account.

Diplo uses a 6176 Vintage Channel Strip in his vocal chain.

The photo in this article show us a global view of Steve's recording studio (The Neon Future Cave) in his house in Las Vegas, NV.

As far as preamps and compressors go, I’ve got an Avalon VT-737SP in my Dim Mak studio. The Avalon gives me a warmer tone. In my home studio here [in Las Vegas] I have a different set up. I have a Universal Audio UA 6176, which is a combo of the classic 610 preamp and the 1176 compressor/limiter.

In the freeze-frame of Marshmello's music video to ritual, a UA 6176 can be seen on his desk.

Mentioned by producer Rik Simpson in this interview from the Universal Audio website, dated shortly after Coldplay's nominations for Viva La Vida & Death and All of His Friends for the 51st Annual Grammy Awards.

Yes actually, in the studio we've got a couple of 6176s. Chris' vocals always go through a 6176. (...) It's generally fairly flat, actually. I just like the sound of it. I don't really pump the EQ too much, maybe shave 2 or 3 dB off, and it just gives a lovely character, a full sound. We actually moved around a fair bit during the last album. We did recordings in Barcelona, New York, and in L.A. Wherever I went, I could always find a 6176 wherever I worked, so could always recall my settings. Chris is very much a perfectionist, he'll always get the basic performance right, but there might be a few words that two or six months later, he wants to re-sing. Obviously, if I can't get the same sound that I had initially, it's going to sound off. So it was always great to be able to find the same equipment, and know that it would sound the same, so close. I could just drop in those few lines, and you'd never be able to tell that it wasn't part of the original performance.

It was also used for Mylo Xyloto, as mentioned in this 2011 UA interview.

We've got about eight 6176 Vintage Channel Strips, which cover everything from bass, vocal, piano. Generally I go through the same mic amps every time for the whole project, so I don't have to repatch stuff and everything is always ready to go.

in the "Warming Up" section of the interview where Scott talks about his Neve Gear, the UA 6176 can be visble in the image below the Neve Preamps

Used for Toto XIV, as mentioned by producer CJ Vanston in this March 5, 2015 Mix Online article.

The main mic preamp throughout was a Universal 6176, used for most of the vocals. “Either with a 47 or an Audio-Technica 5040,” Vanston says. “We used a Schoeps on some of the acoustic guitar tracks and also the Shure KSM44—that sounds fantastic. Then we used a 57 for the electric guitar. If Steve Lukather is happy with his guitar sound, I’m happy with it. And I have two Neve 1073s that we used a lot on the keyboards. I’ve got a Neve 8801, which is a great preamp that I like.”

Firebeatz rely on some outboard gear in the studio. At the top of their hardware stack is the Universal Audio 6176 Channel Strip (mic preamp and compressor).

Taken at DVBBS' apartment in Toronto, you can see the UA 6176 Channel Strip centre of the photo placed on a stand in between Chris' monitors. This unit includes a tube microphone preamp and a compressor modelled after a 1176, which explains why Alex appears to be recording vocals in the picture.

Used for vocals, as stated anecdotally by producer David Ferguson in this May 4, 2016 Mix Online interview about Sturgill Simpson's A Sailor's Guide to Earth.

Also in Simpson’s vocal chain: the same UA 6176 pre that Ferguson used with Johnny Cash, and a rented Fairchild 660.

Used for Mylo Xyloto, as mentioned by producer Rik Simpson in this 2011 interview for Universal Audio's blog.

We've got about eight 6176 Vintage Channel Strips, which cover everything from bass, vocal, piano. Generally I go through the same mic amps every time for the whole project, so I don't have to repatch stuff and everything is always ready to go.

This can be seen throughout the video but most prominently at 9:16.