Used on vocals for the The Fall Tour, as stated by FOH engineer Brett Dicus in this July 9, 2010 Mix Online interview.

Onboard plug-ins include Waves C4 (vocals/bass), McDSP, Elysia, Crane Song and Flux. “These give me the control I need to consistently adapt to the wide range of rooms we are playing,” Dicus explains.

Used on SZA's vocals for "All the Stars", as stated by producer Matt Schaeffer in this May 2018 Sound on Sound interview.

There are 12 SZA vocal audio tracks in total: two for the main hook, one second verse lead track, and nine verse backing tracks, which in fact provide emphasis and overdubs of single words. All SZA audio tracks have the Antares Auto-Tune 8.1 plug-in, the two hook tracks each also have the FabFilter Pro-Q2 equaliser, and the main SZA verse track also has a de-esser, while the backing vocals have two instances of the Waves RVerb and one of the same company’s H-Delay. Apart from Auto-Tune, most of the processing is done on the ‘SZA ?’ aux, to which all SZA audio tracks are sent.

Schaeffer: “The inserts of the sum track for SZA’s vocals consist of the EQ3 seven-band, Waves RComp, UAD Pultec EQP1A, UAD 1176E, Waves De-Esser, UAD LA2A, another Waves De-Esser, the Pro-Q2, yet another Waves De-Esser and the SoundToys MicroShift. The De-Essers affect 11400Hz, 15032Hz and 2000Hz respectively. I like stacking de-essers set to different frequencies. It works like narrow multiband compression. Sometimes I will in fact use a multiband compressor, like the Waves C4, but if the vocals have very specific harsh frequencies, I prefer to use several de-essers. They also are helpful as I like boosting high frequencies in vocals; here, the EQP1A boosts 16kHz. The EQ3 has a high-pass at 216Hz and cuts at 695Hz, and the Q2 lowers the high end to some degree. When a frequency bothers me, I usually sweep through [with a band set temporarily to boost] to find the frequency and then I cut. The MicroShift provides a little extra width and a slight ambience with the delay parameter, without actually making the vocal sound too stereo.

“The sends go to auxes called ‘SZA Verb’ and ‘DVerb’, both of which have the DVerb and EQ3 seven-band, two ‘SZA Delays’ with the Waves H-Delay, and the ‘SZA Chamber’, which has the Waves RVerb and again the EQ3 seven-band. I put an EQ after the reverb, because I don’t like too much low end in reverb. You get a cleaner sound by taking it out, and you make space for actual instruments to take up that spectrum. The delays are both set to eighth note, and one of them is set to ping-pong delay and also is automated to only come in on certain places.”

Eddie uses the C4 Multiband Compressor by Waves for the guitar in his track.

At 40:46 Jonas Blue is using this Plugin

“During the recording I really didn’t use much processing at all,” Candiloro states. “On fitting his vocal in the mix, most of what I wanted to hear was his voice naturally. Every so often I used a Waves C4 multi-band compressor if I needed to pull certain frequencies out. With less heavy compression I could get the vocal to breath a little bit more. We were on the SSL 9000J but I didn’t use their compressor, I was using an [Universal Audio] LA-2A. With Pro Tools you can do some quick automation and it’s always going to sound more natural than compressing the life out of something just to get it to cut through. Michael likes plate reverb on his voice, so we used that too.”

In a video interview with Sound On Sound magazine, Oak Felder discusses using the Waves C4 Multiband Compressor while recording Demi Lovato's "Sorry Not Sorry."

in this instagram post martin jensen is seen using the waves c4 in his mix.

Used on vocals for "Ransom", as mentioned by mix engineer Joseph Colmenero in this November 2019 Sound on Sound interview.

"Many of the plug-ins on the vocal tracks came with the session. The vocal audio tracks all have Antares Auto-Tune Pro because the session came with Auto-Tune Live, and I didn't have my licence with me, so I put Auto-Tune Pro on. Without seeing the Live plug-in I had to use my ears to make sure that the settings were exactly right. They had recorded Tecca's vocals with Auto-Tune on, playing Auto-Tune like an instrument.

"All audio tracks go to the LeadVox bus, on which there is a stack of plug-ins. Again many of them came with the session. The chain starts with the Waves Q6 EQ, the FabFilter Pro-C2 compressor, then a Waves SSL Channel, two Waves De-Essers, a Waves RVox used as a noise gate, the SoundToys Decapitator for vibe, and a Waves C4 to bang down some peak frequencies. There's a track with distant ad-libs that goes to the Harmony Vox aux, which has some similar plug-ins, and adds a D-Verb for some extra reverb. There are sends on the vocal busses to the reverb aux, with the Waves RVerb, and delay quarter-note aux, with the Waves H-Delay. I also have the Avid EQ7 before the reverb, to take out the low end and high end. You don't want to have esses all over your reverb. The other two aux tracks that I did not use are part of the producer's template."

Presets shared by Andy Sneap for guitars.

Used on Cardi B's vocals for "Bodak Yellow", as mentioned by mix engineer Evan LaRay in this February 2018 Sound on Sound interview. An image of the "VOX 1" settings can be found here.

In his mix of ‘Bodak Yellow’, Evan LaRay used almost identical vocal chains on two auxiliary busses. The ‘Vox 1’ chain includes FabFilter’s Pro-DS de-esser and Waves’ C4 multiband compressor, plus the Waves CLA Vocals plug-in and SoundToys’ Decapitator saturation processor.

in this video he shows how he uses the Waves c4

Jerome Isma-Ae can be seen using Waves C4 in the master channel in this photo he uploaded on his Facebook.