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| API (Audio Products International) | |
|---|---|
| Name | Audio Products International |
| Type | Private |
| Founded | 1960s |
| Founder | Saul Walker |
| Headquarters | Los Angeles, California |
| Area served | Global |
| Products | Mixing consoles, preamplifiers, equalizers, signal processors |
API (Audio Products International) is an American manufacturer of professional audio equipment known for modular analog mixing consoles, microphone preamplifiers, and signal processing gear. The company became influential in recording studios, broadcast facilities, and post-production houses across North America, Europe, and Asia. Its technology influenced console design alongside contemporaries in Los Angeles, New York, and London studios.
Founded in the late 1960s in Los Angeles by engineer Saul Walker, the company emerged during a period when studios like Capitol Records, United Artists Records, Motown Records, Atlantic Records, and Columbia Records were expanding multitrack facilities. Early customers included engineers from Sunset Sound, United Recording, Sound City (studio), A&M Studios, and The Village Recorder. The company’s modular approach paralleled developments at EMI, Decca Records, RCA Studio B, Abbey Road Studios, and Trident Studios in the UK. Throughout the 1970s and 1980s it competed with manufacturers such as Neve Electronics, SSL (Solid State Logic), Helios (company), MCI (Music Center Incorporated), and Amek (signal processing). In the 1990s and 2000s consolidation in the audio industry involved entities like Harman International Industries, Yamaha Corporation, Sony Corporation, and boutique firms in California and New York. The company’s designs influenced broadcast providers including NBCUniversal, CBS (Columbia Broadcasting System), ABC (American Broadcasting Company), and post-production houses serving Lucasfilm, Warner Bros., Paramount Pictures, and Universal Pictures.
The product line includes modular 500-series format modules, mixing consoles, mic preamps, equalizers, compressors, and patchbays adopted by studios that favored analog signal path integrity exemplified by facilities such as Electric Lady Studios, Record Plant, Capitol Studios, and Muscle Shoals Sound Studio. Technologies emphasized transformer-balanced circuits similar to designs from Rupert Neve, discrete Class-A topologies used by designers associated with Bob Clearmountain, Tom Dowd, George Martin, and signal routing philosophies found in broadcast consoles at BBC Broadcasting House. The company’s 500-series approach connected with rack ecosystems promoted by API (500 Series) collaborators and used in workflows alongside processors from UREI, dbx, Manley Labs, Thermionic Culture, and Avalon Design.
Products appeared on recordings for artists signed to labels like Warner Bros. Records, Island Records, Island Records, Polydor Records, Virgin Records, Sony Music, Universal Music Group, and EMI Records. Engineers from sessions with Bruce Springsteen, Fleetwood Mac, Stevie Wonder, The Rolling Stones, The Beatles, Prince, David Bowie, Nirvana, Radiohead, U2, Madonna, Michael Jackson, Dr. Dre, Timbaland, Quincy Jones, Rick Rubin, Rick Wakeman, Brian Eno, Phil Collins, Glyn Johns, Eddie Kramer, Andy Wallace, and Jack Joseph Puig have favored the company’s modules. Film and television clients included post teams on projects from Pixar, StudioCanal, MGM Studios, HBO, Netflix, and restoration houses working with catalogs from Sony Classical and Deutsche Grammophon.
Manufacturing occurred in California with assembly and test equipment comparable to practices at precision electronics firms such as Ampex, Extron Electronics, and Solid State Electronics. The company sourced transformers, capacitors, and potentiometers from suppliers that also served Telefunken, Neumann, Shure Incorporated, Sennheiser, Beyerdynamic, Furman, and Lundahl Transformers. Test and calibration workflows paralleled procedures used by AES (Audio Engineering Society)-aligned labs and OEMs supplying the broadcast sectors of PBS (Public Broadcasting Service) and CBC/Radio-Canada.
Over time the company experienced ownership changes and leadership from executives and engineers with ties to firms like API (other companies in audio), Dukane, Ross Video, Harman International, and boutique manufacturers in Los Angeles and New York. Management teams included veterans recruited from Universal Audio, Focusrite, Avid Technology, Antares Audio Technologies, and Digidesign. Board and advisory contributors often had backgrounds connected to academic institutions such as USC Thornton School of Music, Berklee College of Music, and McGill University Schulich School of Music.
The company and its designs received recognition from industry bodies and trade publications including NAMM (National Association of Music Merchants), AES (Audio Engineering Society), Mix Magazine, Sound on Sound, Recording Magazine, and Billboard. Its products were cited in vintage gear lists alongside accolades historically awarded to builders like Rupert Neve, George Massenburg, Tom Scholz, and Les Paul (guitarist). Studio installations garnered technical achievement notes at ceremonies connected to TEC Awards and industry showcases associated with Winter NAMM.
The company’s modular console architecture and discrete analog circuitry influenced generations of designers working at Neve Electronics, SSL (Solid State Logic), Avalon Design, Focusrite, API competitors, and boutique builders in the United States and Europe. Its design philosophies appear in teaching curricula at Berklee College of Music, Curtis Institute of Music, NYU Steinhardt, and research presented at AES (Audio Engineering Society) conventions. Collectors and restoration engineers in audio preservation communities tied to Library of Congress, British Library Sound Archive, and private archives maintain vintage units for historical recordings and analog workflow revival.
Category:Audio equipment manufacturers of the United States Category:Recording studios