In a user-uploaded photo, Deadmau5 can be seen using the Waves API 2500 Compressor plugin on his screen.

At 0:55 in the video, the Waves API 2500 compressor plugin can be seen on the left of Virtual Riot's screen.

In this video at 35:28 can see Waves API 2500

At 35:36 min Tom says "This is been my favorite compressor scince the moment they release is, must a been 9... 10 years ago"

The API 2500 plugin is something I often use to ‘excite’ a droopy vocal in the mid/high register. I actually have the original hardware, but I use the plugin just as much if not more – it has the ‘teeth’ you would expect from anything API. On 1922, I used the API 2500 to remove unwanted ‘girth’ on low-end bass and percussive instruments, for example on my processed celli – and it was literally like giving them a facial!

At 0:50 Thomas Gold adds API 2500 to compress the beast

Andrew Bayer confirmed his use of the Waves API 2500 Compressor in his production work on the album featuring "Lose Sight", stating on Reddit: "I used a lot of the Waves API 2500 compressors on the samples on that album. Like super smashed to get a really over-compressed sound."

In a photo on Instagram, Timmy Trumpet's left monitor displays the Waves API 2500 Compressor, indicating its use in his setup.

As for some of the other gear and outboard… UBK Clariphonic parallel EQ and an API 2500 for the master buss.

“For Daniel's vocal, I use the C6 [multiband compressor] and API 2500 [compressor]. The C6 is my go-to for every vocal. I reach for it before my channel EQs.”.

Mentioned by sound engineer Trevor Muzzy in this Sound on Sound interview about the production of "Starships".

"You can see that the pre-chorus and chorus vocals have a lot of timing and comp edits. They were imported directly from the session I cut the vocals in. I did not merge or consolidate them, they just are the way they are. There's quite a lot going on with the vocals. I tried to create a nice basic vocal sound using the inserts, and once they sat well in the track, most of the sonic variations between the sections came from the sends. There was no tuning on the rapping, but the sung vocals in this track had a fair amount of tuning with the Logic Pitch Corrector plug-in on the inserts. The tuning is part of the sound of the record, with vocals needing to be very, very precise. In some cases, we pitched them up or down for vocal effects. Logic Pitch Corrector is a little harder-sounding than Auto-Tune, but it has its own distinct sound that we liked for the vocals in this track. It really fits the song.

"The other inserts on most of the vocals were all Waves: the C1 compressor, SSL Channel, Renaissance Channel, De-Esser, Renaissance Compressor, API 2500, and the Logic Channel EQ. The C1 compressor is the first in line on several lead vocals, and it does the same Pensado trick I used on the guitars, which is to compress a specific band — in the case of the verse lead vocal, around 2849Hz — focusing on notes that sounded a little harsh. It smooths this problem out more elegantly than using an EQ. Then the signal goes through the R Channel with some basic EQ, cutting significantly at 281Hz. Again, it was a matter of removing some less pleasant things to let the nice aspects shine. I bypassed the compressor in the R Channel. I needed a bit of de-essing, and the Waves De-Esser is a great all-purpose de-esser, in this case working at 5634Hz with the side-chain set to high-pass.

"There were two more compressors on her vocal. There was no science behind this, it was just a matter of experimenting to find a unique sound. The first is the Renaissance Compressor, which I love and which is set to a fast attack time and takes off about 6dB, so quite subtle, not too intense. The API 2500 is set pretty aggressively and you can hear it pumping a little bit on the vocal. It was already in the session — it had been used on the demo vocal. I pulled it over to Nicki's channel and liked what it was doing, so I adjusted it to fit her vocal. Finally, the Channel EQ notches quite a lot around 600Hz and a little bit more around 235Hz, just carving out some low-mids to make the vocal sit better in the track.

"Regarding the sends, there are some really distinct things happening here. The main lead vocal was similar throughout the song, but I tweaked it as it went along. The pre-chorus and chorus vocals all have Bus 1, which went to the same Altiverb effect that I had on the drums, to add some ambience to the vocal. The rap verses are much drier. Bus 35 is the Waves Doubler, which gives a bit of spread to the lead vocal — I used this on the rap as well as on the sung vocals. Bus 4 is the Waves CLA with a drastic telephone effect. That was another effect that was there from the demo version and added a cool quality. Bus 50 is the [Sound Toys] Echo Boy, which is the main plug-in I use for delay throws, whenever I want to repeat a word. In this case it's on a quarter-note Echoplex setting. It's a single, mono echo that I panned a little bit to the side. Bus 7 has the Waves VX1 Maserati Vocal Enhancer, and that was, again, a plug-in I inherited. It is set to a very compressed, bright vocal sound that I brought in and out to add some sparkle to the sound when necessary.

"Bus 6 has the main reverb in the track, which you are hearing in the pre-chorus and chorus, and which is a Lexicon Plate plug-in on the 'VocalPlate2' preset. It's a really bright, over-the-top plate sound that is not trying to blend in but that's actually brightening the vocal up a lot. It's loud and wet. Busses 16 and 29 are different stereo delays: the Waves SuperTap was already in the session and I kept it, and the other is a standard Logic stereo delay that I use all the time on vocals. Bus 3 is the Logic Bitcrusher, which gives the vocals a grainy sound. The vocals already had an aggressive sonic quality to them because of the 251-TG2-1176 chain, and the Bitcrusher enhanced that. It's nasty, there's nothing nice about a bit-crusher, and it adds a bit of attitude. I used it on some of the background vocals as well, like in the second verse, where you have the pitch effects. You can hear it in the very processed harmony vocals that come in. That was something we added when we were doing the final vocal comp and arrangement. It gave that second verse some more life and helped the track build. The background vocals are a very big part of the hook vocal sound as well, and, for example, track 140 has many effects on it. That actually contains the vocals of the demo singers. Nicki's lead and background vocals are dominant, but in the chorus the background vocals from Mohombi and Wayne Hector added to the crowd feeling. The chorus vocals are really big in this track, and they were part of that.”

In this Twitch stream, Sega Bodega shows some of his effect chain, in 19:32 we can see the Waves Api-2500 Compressor, being launched by Sega.

Used for Quavo and Offest's features on Beyoncé and Jay-Z's "Apeshit", as stated by producer Stuart White in this September 2018 Sound on Sound interview.

The first four aux tracks feature SoundToys effects, namely Little Microshift, two EchoBoy delays, and a delay from the Little PrimalTap. Next are a Hall Reverb aux and a Church Reverb aux, both using Waves’ RVerb, an EMT plate from Audio Ease’s Altiverb, four aux tracks with the Waves H-Delay and various other plug-ins on them as well, and four more reverb auxes with the Avid Revibe II, two Avid D-Verbs and another RVerb.

White: “I use the Little Microshift in pretty much every mix, with the left-right micro pitch-shift effect that’s similar to the classic effect in the Eventide H3000 shift where you pitch one side down six cents and one side up six cents to create width. It’s a good way to get your vocals wider without them being out of phase. It thickens up vocals, and is kind of like a doubler. I do quite a lot of filtering on some of the EchoBoy delays, for example with the Waves REQ, and I am adding colour with the SoundToys Devil-Loc, which is great if you want to colour the delay so it is separate from the main vocal, and compress it with the UAD LA3A and mix that in to taste.”

(...) “The Migos vocals came in as seven audio tracks, with the Avid D-Verb on each of them. Putting a D-Verb on a track before EQ is not something I normally do, but it sounded great. So I adjusted them a bit, but otherwise left them as they were. The tracks also came in with the Aux track above, and the EQ3, with a high pass at 60Hz and notches at 430Hz and 1.41kHz and a high boost, the Waves API 2500 compressor, the RComp, the Waves Q10 EQ, following a slightly similar curve to the EQ3, the Waves De-esser, the Waves Aphex Aural Exciter, and the Avid Dyn3 expander/gate. I added the EQ3, with another high-pass filter at 144Hz, and the RComp, with a ratio of 10:1.”