The Microphones That Shaped
Recorded Sound

The original Telefunken company was a major German electronics manufacturer that distributed and licensed microphones built by AKG in the 1950s and 1960s. The ELA M 251 — built by AKG to Telefunken's specification and bearing Telefunken's name — is considered by many engineers to be the most perfect microphone ever manufactured.

Fewer than 500 original ELA M 251s were ever made in the 1960 to 1962 production run. Today, the Telefunken brand has been revived as an American company (Telefunken Elektroakustik) that produces modern reissues. But the originals are in a category of their own — instruments rather than tools, commanding prices that reflect their scarcity and legendary status.

AKG Acoustics was founded in Vienna in 1947 by Rudolf Görike and Ernst Pless. Within a decade it had produced the C 12 — the microphone that introduced switchable polar patterns to the professional studio, and whose CK12 capsule design became the circuit at the heart of the Telefunken ELA M 251.

The C 414, introduced in 1971 and still in production today, became the most versatile and widely used large-diaphragm condenser in professional recording. Where Neumann defined the premium vocal standard, AKG carved out the working engineer's toolkit — instruments you could throw at anything and trust completely.

RCA's ribbon microphones defined the sound of American broadcast radio and the golden age of Hollywood recording. The 44-BX, introduced in 1931, became the standard of the American recording industry for two decades — its figure-8 ribbon element capturing a warmth and natural proximity effect that condenser microphones of the era could not match.

The distinctive visual design of RCA ribbons — particularly the 44-BX with its art-deco grille and the 77-DX with its rounded housing — made them icons of mid-century American culture. They appear in thousands of photographs of Frank Sinatra, Nat King Cole, and virtually every major American performer of the 1940s and 1950s.

Coles Electroacoustics was established in 1954 as the microphone manufacturing arm of the BBC's research department. The 4038 ribbon microphone, developed in collaboration with the BBC, became the standard microphone for BBC broadcast recording and remains in continuous production today — an extraordinary record for any technical instrument.

The 4038's figure-8 ribbon pattern and characteristic gentle high-frequency roll-off, combined with its exceptional transient response, made it the instrument of choice for drum overheads in rock and jazz recording from the 1960s onwards. John Bonham's famous drum sound on Led Zeppelin recordings was captured with Coles 4038s overhead — a fact so frequently cited that the mic became synonymous with the Bonham sound.

Shure was founded in Chicago in 1925 by Sidney Shure. By the 1960s the company had established itself as the global leader in dynamic microphones — rugged, reliable instruments built for live performance and broadcasting. The SM57 and SM7B became two of the most trusted professional microphones ever made.

The SM7B's moment of cultural alchemy came in 1982 when engineer Bruce Swedien chose it for Michael Jackson's lead vocal on Thriller — a recording that became the best-selling album in history. The idea of using a broadcast dynamic mic for studio vocal work was unconventional; the result was definitive.

Sony entered professional audio in the 1950s and over the following decades produced a series of condenser microphones that established Japan as a serious force in studio equipment. Where the European tradition — Neumann, AKG, Telefunken — favoured transformer-coupled tube circuits, Sony's engineers brought a different sensibility: high technical precision, low self-noise, and a forward, detailed sound that suited broadcast and later the demands of modern pop and hip-hop production.

The C-800G, introduced in 1992, became one of the defining vocal microphones of the hip-hop and R&B era. Its distinctive cylindrical cooling fin houses a tube circuit in a temperature-controlled chamber — an engineering approach unique in the industry. Dr. Dre, Kanye West, Pharrell Williams, Jay-Z, and Kendrick Lamar all recorded with C-800Gs. The mic's combination of tube warmth and Japanese precision gave it a character that engineers describe as simultaneously smooth and detailed — cutting through dense production without harshness.

Fritz Sennheiser founded his company in Wedemark, Germany in 1945, months after the end of the Second World War. Within a decade Sennheiser had pivoted into professional audio, and the microphones that followed established the company as one of the most important manufacturers in broadcast and studio recording.

Where Neumann defined the premium condenser standard, Sennheiser carved out different territory: dynamic microphones of exceptional quality and a range of instrument microphones that became the defaults for specific applications. The MD 421 is the standard microphone for tom-toms worldwide — not because engineers chose it over alternatives, but because it solved the tom-miking problem so completely that the question stopped being asked. The MKH series RF condensers became the standard for film, broadcast, and nature recording worldwide.