Used for vocals on Nevermind, as stated by producer Butch Vig in this March 1997 Sound on Sound interview.

Utilising a Neumann U67 and an LA2A, most of Cobain's vocals were recorded in the small Studio B at Sound City and ran straight to tape. The results alternate between a smooth, compressed, phasey sound and one of extreme dryness when the voice sits alone, yet minimal effects were employed. "Kurt really had an amazing voice," confirms the producer. "He could scream and it would have this great rasp and tone to it, and yet he could also bring it down really quiet and sound so world-weary and exhausted and intimate. It's hard to put your finger on it, but not many artists have that kind of voice or persona. Kurt had this brilliant pop sensibility in terms of melodic structure and phrasing, and yet he loved the attitude of punk, and those are the two things that collided and made Nirvana so special.

"In the studio I used a fair amount of compression on the vocals so that I could control his dynamics, and I also got Kurt to do some double-tracking. I'm a big fan of doubling, particularly on choruses, so he did that quite a bit on the record and that's part of what the sound is. Andy Wallace, the mix engineer, had a little bit of tight slap echo -- almost a double echo -- on a couple of the songs, and he also used a little bit of reverb and so on, but for the most part the vocals were left fairly dry. That really was the approach that the band and myself wanted to take. We didn't want to have it too washed out with reverb or echo, and it was the same with the drums and the guitars; we wanted everything to be fairly dry and in your face.

Used for the vocals and guitar on Icky Thump, as stated by recording and mixing engineer Joe Chiccarelli in this October 2007 Sound on Sound interview.

• Vocals: Teletronix LA2A, Roland Space Echo, echo chamber, Neve 8078 EQ

“Jack always wanted more distortion on the vocals! The main vocal effect is a distorted slap echo, which I recorded: I overloaded the tape machine. When you severely overload something, it squashes the waveform so much that it almost sounds like a different instrument. Instead of being a delay of the original signal, it becomes its own sound and adds a vibe to the track. When it came to the mix, Jack wanted still more distortion on the vocals and more edge, so I overloaded an LA2A compressor, setting the output to 80. This meant that I was getting the distortion from the last tube stage of the compressor, which creates a really beautiful distortion.

“I also added some Roland Space Echo spring reverb to the vocals during the mix, and ran the vocals through the echo chamber. Any reverb that I used on the album would have been dark-sounding, and in a lot of cases I made it mono as well. In the case of ‘Icky Thump’ I’d pan a mono reverb left behind the vocal that was panned left, and the other mono reverb was panned right behind the vocal that was panned right. Both were panned at about three quarters. I might also have rolled some top end off the distortion, just to get rid of any ugly harmonics.

“I was actually reluctant to use all that vocal distortion during the mix, but again, I had to trust him. One thing I have learned is when you work with great artists you have to put yourself in their hands, trust them and go with the flow. Sometimes the engineer in me would say ‘Oh no, I can’t print all that distortion,’ but then the music fan would go: ‘It sounds great, it’s exciting, who cares?’”

(...) “For the song ‘Icky Thump’ I had the Royer and an AEA on Jack’s two guitar amps, and a couple of U67s for room ambience. In a few cases I used the Shure SM7 guide vocal mic. Ribbons are prone to overloading, so we blew out four Coles mics on the guitar amps. Luckily Jack had several Coles 4038’s with him! The guitar mics went through Neve and Chandler preamps, and then always through an API 550A EQ, and then an 1176. The Univox sounded great acoustically in the room and was miked with a U87 across the room, going into a Chandler TG2 preamp and then some slight compression with an LA2A."

In this photo on the left rack you can see a teletronix La-2a leveling amplifier.

Used on Lullabies to Paralyze for Josh's vocals. Sound engineer Joe Baressi : "I tend to compress when I go to tape. The 1176 is my favourite on vocals, but sometimes the LA2A works really well. If you're looking for more dirt you can turn a tube compressor up a little more. I'm not opposed to dirtying the signal up and blending that in with the original. I'm not a transparent compressor guy. I may send one compressor into the other as well. That works well if you need a very up-front vocal. When I'm mixing I'll compress the vocal further, perhaps using an 1176 again."

Daft Punk record bass guitar via a Neve 1081 and Teletronix LA-2A. The LA-2A was also used to record a couple of vocalists, and during the mixing process it was used for parallel compression on the kick and snare.

Producer Steve Hoffman has stated his use of the LA-2A for Clapton.

My Teletronix LA-2A, ganged for stereo or mono reproduction via the handy toggle switch in the center of the two units. (...) I've used it on countless projects, Nat "King" Cole, Frank Sinatra, Beach Boys, Doors, Eagles, Ringo, McCartney, Fleetwood Mac, Bob Dylan, Ray Charles, Peggy Lee, Jethro Tull, Chuck Berry, Creedence Clearwater Revival, Van Morrison, White Stripes, Tom Petty, Red Hot Chili Peppers, Ella Fitzgerald, Yes, Sonny Rollins, John Coltrane, Steely Dan, Steppenwolf, Bad Company, Jim Croce, Elvis Presley, Billie Holiday, Judy Garland, Dave Mason, Paul Simon, America, The Band, Crosby, Stills & Nash, The Cars, ZZ Top, James Taylor, Art Pepper, Steve Miller Band, Queen, Rod Stewart, Duke Ellington, John Lee Hooker, Al Jolson, Roy Orbison, Bing Crosby, Sammy Davis, Jr., The Who, Lightnin' Hopkins, Bill Haley & his Comets, Miles Davis, Mamas and Papas, Blue Öyster Cult, The Byrds, Eric Clapton, Bill Evans Trio, Blood, Sweat & Tears, Phil Collins, Alice Cooper, Deep Purple, Jeff Beck, Doobie Bros., Faces, Grand Funk, Heart, Billy Joel, Linda Ronstadt, Ten Years After, Grant Green, Wes Montgomery, Pat Benetar [sic], Elton John, Leon Russell, Metallica. etc.

Producer Steve Hoffman has stated his use of the LA-2A for McCartney.

My Teletronix LA-2A, ganged for stereo or mono reproduction via the handy toggle switch in the center of the two units. (...) I've used it on countless projects, Nat "King" Cole, Frank Sinatra, Beach Boys, Doors, Eagles, Ringo, McCartney, Fleetwood Mac, Bob Dylan, Ray Charles, Peggy Lee, Jethro Tull, Chuck Berry, Creedence Clearwater Revival, Van Morrison, White Stripes, Tom Petty, Red Hot Chili Peppers, Ella Fitzgerald, Yes, Sonny Rollins, John Coltrane, Steely Dan, Steppenwolf, Bad Company, Jim Croce, Elvis Presley, Billie Holiday, Judy Garland, Dave Mason, Paul Simon, America, The Band, Crosby, Stills & Nash, The Cars, ZZ Top, James Taylor, Art Pepper, Steve Miller Band, Queen, Rod Stewart, Duke Ellington, John Lee Hooker, Al Jolson, Roy Orbison, Bing Crosby, Sammy Davis, Jr., The Who, Lightnin' Hopkins, Bill Haley & his Comets, Miles Davis, Mamas and Papas, Blue Öyster Cult, The Byrds, Eric Clapton, Bill Evans Trio, Blood, Sweat & Tears, Phil Collins, Alice Cooper, Deep Purple, Jeff Beck, Doobie Bros., Faces, Grand Funk, Heart, Billy Joel, Linda Ronstadt, Ten Years After, Grant Green, Wes Montgomery, Pat Benetar, Elton John, Leon Russell, Metallica. etc.

We can see the amp at 8:27

"These are really great compressors," says Steve Vai about the Teletronix LA-2A Leveling Amplifier which he uses in his studio setup.

Used for "Get On Your Boots", as stated by producer Declan Gaffney.

"Most of 'Get On Your Boots' was recorded in Dublin by Richard Rainey, and the basic backing tracks were done live, by the whole band together. (...) Edge's thick guitar sound is entirely from the live band session, recorded with two Royer 121s, one on his Fender Deluxe and the other on his AC30, and the mics went through the Neve and then an LA2A, though it's not doing anything, it was just there for the sound. When recording Edge's cabinets, it's almost always a 121, or a Sennheiser 409, occasionally a 57. I record completely flat, because Edge will have found a great guitar sound, and you just record it."

In the middle left of this picture, you can see an LA-2A Compressor in the rack.

In an interview, Susan Rogers mentioned that Prince was hesitant to adopt new gear, preferring equipment he was familiar with. He favored the Teletronix LA-2A Leveling Amplifier, and multiple photos from his Paisley Park studios show several LA-2As in use.