Enrico Sangiuliano is seen using the UAD 610-B Tube Preamp and EQ Plug-In in a Twitter photo, where it appears on the right monitor in his studio setup.

"I don’t like having things setup too nicely and I mostly patch stuff in when I feel like using it — that’s why the Apollo is really helpful. I have one cable that wherever it gets plugged in has some combination of UAD front end on it — the UA 610 Tube Preamp & EQ Plug-In Collection or the Neve 1073 Preamp & EQ Plug-In Collection, an 1176, an amp simulator, or the Boss® CE-1 Chorus Ensemble plug-in."

Used for vocals on Another Country, as stated by mix engineer Kevin Savigar in this February 2016 Sound on Sound interview. An image of the settings can be found here.

“When we were at his house in LA I had a Neumann U67 for Rod, which I rent from LAFX. It’s an old vintage mic, which is in great shape, and which has been used on Rod’s voice for years. I also rented acoustic panels from LAFX, to control the room, which was a little live. They help to deaden the sound and also to give Rod a physical space to sing in. We kept the panels a little apart in front of him, because he likes to see me, which allows me to cue him in and give him feedback and things like that. I sat facing him, with a low table on which I have my laptop and the UAD Apollo Twin mic pre. Rod sings with Sony MDR-7506 headphones on. He likes them as they are crystal-clear and punchy.

“When we were in London I could not get a 67, so I used a U47 instead, which worked out great as well. His vocal mic goes straight into the Apollo Twin, and I used the UAD 610B tube preamp and EQ plug-in on him, which sounds nice, and some UAD 1176 with a very low threshold and not much compression at all, and UAD Helios 96 EQ to brighten his vocal sound up a bit. That was my entire input chain. Rod has a very loud voice, but also sings some passages very softly, so there’s quite a dynamic range in his vocal, and I needed the 1176 to keep that under control.

“It’s quite amazing really, because he had this nasty operation on his throat [in 2000, for thyroid cancer], with the scalpel coming within millimetres of his vocal cords. It was touch and go whether he could ever sing again. He had to completely retrain his muscles to get his voice back. But it’s now in great shape and he takes good care of it. He warms up extensively with a half-hour vocal exercise routine before he goes up to the microphone.”

(...) Kevin Savigar’s vocal chain for Rod Stewart began with the Universal Audio 610B Unison preamp plug-in, with brightness added by the same manufacturer’s Helios EQ, and dynamic control from the UAD 1176 emulation. Once again, the Waves CLA bundle came into effect, with a Waves De-Esser providing the final touches.