There's also a Digirack Echo doing a quarter-note echo, and I also sent the glockenspiel to my EchoBoy quarter-note delay, and the two together make it a stereo quarter-note echo.

Sound on Sound interview, 2013.

“Soundtoys are my go-to creative plug-ins. Crystallizer, EchoBoy and Decapitator are so much fun to work with.

Benny says at the bottom of the article "My go-to plug-ins? There are tons of them. The Sound Toys stuff is probably my favourite. I love the Decapitator, I love Echo Boy "

Used on Jones' vocals for The Fall, as stated by producer Jacquire King in this February 1, 2010 Electronic Musician interview with Jones, Jacquire King and assistant engineer Brad Bivens.

She was into adding delay on her voice, trying not to just make it pretty with reverb. The delays were both analog and plug-in. I use Audio Ease Altiverb, SoundToys EchoBoy delay, some of the UA plug-ins—they have a nice EMT 140 emulation—and the Cooper Time Cube Delay. We used The Magic Shop’s Marshall Tape Eliminator AR-300, a tape slap simulator. And Norah had an old Ibanez analog delay. We used a Roland Chorus Echo and EMT 140 plate reverbs, too. Sometimes I will use an Eventide H3000 for harmonic delay effects, and as I get them going I will print them in Pro Tools with the transfer from analog.

In Issue 332 of Future Music magazine, on page 67, Iain says: '(Soundtoys) Echoboy is really good too.'

Used on Lovato's vocals for Clean Bandit's "Solo", as mentioned by mix engineer Mark Ralph in this November 2018 Sound on Sound interview.

There also are very few sends in the session, and only Demi Lovato’s lead vocal tracks have sends to the three aux effect tracks: reverbs from Audio Ease’s Altiverb and Valhalla DSP’s Valhalla Room, plus delay from SoundToys’ Echoboy.

Jake One mentions how he likes Sound Toys plugins, in particular the Echo Boy plugin, at 7:44 in this video.

Used for Jimin's lead vocals on "Fake Love", as stated by producer James Reynolds in this August 2018 Sound on Sound interview.

Jimin chorus lead vocal: iZotope Neutron, FabFilter Pro-MB, Empirical Labs Arousor, iZotope Trash 2 & FabFilter Pro-DS, plus sends to Slate VerbSuite Classics, FabFilter Pro-R, Soundtoys EchoBoy, Waves Factory Trackspacer & FabFilter Pro-DS.

“Welcome to my vocal world! BTS like bright, punchy vocals. There is not a lot of room in the mix because there is a lot of stuff going on, so I am not boosting low end on the vocals, because you are not going to hear that. Instead I’m trying to give the vocals more presence. The first thing I have in the chain is Neutron, which is a great EQ, and I love its dynamic mode. I boost high end with the Neutron, and band three is set to 4-6000 Hz, with the dynamic mode pulling down any loud ‘ess’ sounds or anything else too sharp. The Neutron is also tidying up the bottom end. After that is the Pro-MB multiband compressor just reining in a couple of frequencies to control the vocal.

“Next is the Arousor, adding some distortion so the vocal is very spitty and present, with lots of attack. After that there’s another instance of Trash 2 set to multiband, which I am using to give the vocal drive and really making it sit solidly in the mix. You have to know how to use Trash 2, otherwise vocals can get too harsh, but in general it is a very good way of saturating and really thickening a vocal and giving it presence. It does depend on the song, I am not always so full on with a vocal! At the end I have the Pro-DS de-esser just controlling the sibilance. Sometimes I used two instances of it, one at the beginning and one at the end, but the Neutron is already kind of doing a de-essing job.

“There also are many sends on that lead vocal. The first send is going to one of my favourites, the Slate VerbSuite Classics. It’s set to a hall-type reverb with 1.75s decay, and because I set quite high pre-delays it is almost like a slap on the vocal, which puts the vocal in a nice space. The next send is to the Pro-R for a longer, bigger reverb, which works for a chorus. I have cut low end and high end as you don’t want that floating around. The Pro-R is really good for controlling those things. Next is an EchoBoy quarter-note delay, saturated by setting it to ‘Splattered’ under ‘Style’ and that send then goes into the Trackspacer. I have a send from the lead vocal going to Trackspacer, so that whenever the lead vocal is singing the Trackspacer ducks the quarter-note delay out of the way. The Trackspacer is frequency-dependent, so it will duck whatever frequencies are dominant in the vocal, which makes it great for moving stuff out of the way. Then there’s another half-time EchoBoy delay setting, which is being automated for delay shots, and finally another Pro-DS.”

at 15:35 you can see his list of soundtoys plugins.

Used on the vocal censor echoes for the clean edit of "Say So", as stated by mix engineer Clint Gibbs in this July 2020 Sound on Sound interview and as visible in this screenshot of the Pro Tools project. A larger version of the image can be downloaded here.

"There's also a track called Echo FX Clean. When I have to mute a word, I will take the word before it and will delay it with some reverb to fill the empty space. The additional plug‑in by Vengeance, the VPS philta XL filter, is doing a high and a low cut to give it more of that radio sound.

“I can’t rate this delay highly enough. Echoboy is really tweakable, so you can fine-tune your delay to an amazing degree. It’s such a user- friendly plugin. Its ping-pong delay and the saturation settings are just great, and the Tweak and Style Edit buttons are fantastic for creating unique delay effects.”

Tim uses this throughout the series.