The machines that
captured everything.

Revox was the consumer and prosumer brand of Willi Studer's company, established alongside the professional Studer range in 1948. Where Studer machines were priced for national broadcasters and major commercial studios, Revox brought the same engineering philosophy to home recordists, small studios, and educational institutions.

The A77 and B77 became icons of the home recording world — machines that introduced a generation of musicians and engineers to open-reel tape. The build quality and reliability of Revox machines was so far above the competition that they ended up in small radio stations, schools, and working studios worldwide.

Nagra was founded in Lausanne in 1951 by Stefan Kudelski, a Polish-born engineer who had fled Europe after World War II. The name comes from the Polish word for "will record." Kudelski designed the original Nagra I as a portable machine small enough to carry in a briefcase — the first recorder to achieve truly professional audio quality in portable form.

By the 1960s Nagra had become the absolute standard for film production sound recording. Location sound mixers worldwide used Nagra machines on virtually every major film production through the 1970s and 1980s. The combination of exceptional audio quality, rugged Swiss construction, and reliable battery operation made Nagra uniquely suited to field work where failure was not an option.

Ampex was founded in San Carlos, California in 1944 by Alexander Poniatoff. The company's technology had a direct lineage from wartime Germany: after the fall of Nazi Germany, US Army Signal Corps officer Jack Mullin discovered AEG Magnetophon tape recorders — then the most advanced in the world — in a Frankfurt radio studio and brought two machines and 50 reels of tape back to the US. His 1946 demonstrations to American engineers sparked enormous interest. Bing Crosby hired Mullin to record his radio shows, and Ampex subsequently developed the Model 200 — its design informed by the Magnetophon technology Mullin had uncovered. The first Model 200 was delivered to Crosby in 1948, introducing professional tape recording to American broadcasting.

Through the 1950s, 60s and 70s Ampex was the dominant force in American studio recording. Motown, Stax, Atlantic, Columbia — virtually every significant American recording was made on Ampex machines. The 440 series became the workhorse of US studios; the ATR-100 redefined mastering quality.

Otari Corporation was founded in Tokyo in 1961 and grew into the leading Japanese manufacturer of professional tape equipment. While Studer owned the top end of the market, Otari found its place by offering genuinely professional performance at substantially lower prices — opening 24-track recording to a generation of project studios and smaller commercial facilities.

MCI (Media/Communications Industries) was founded in Fort Lauderdale, Florida in 1967 by Jeep Harned. The company distinguished itself from Studer and Ampex by emphasising modular design — MCI machines were built to be expanded, upgraded, and serviced in the field. Transformerless audio electronics, precise servo-controlled tape motion, and comprehensive remote control made MCI a practical choice for commercial studios.

MCI machines were widely adopted across the United States through the 1970s and early 1980s, particularly in facilities that valued service accessibility and system expandability. The JH-24 became one of the most common 24-track machines in American commercial studios.

In 1982 Sony acquired MCI. The Fort Lauderdale plant continued to produce JH-24 and JH-110 machines under Sony ownership for several years — often branded "Sony/MCI" on the badge — before Sony developed its own in-house high-end analog line, the APR-5000 series (see Sony brand entry above). The JH-24 itself remained in production into the mid-1980s and survives in working studios today as one of the most successful American multitracks ever built.

Sony Corporation was founded in Tokyo in 1946 as Tokyo Tsushin Kogyo. By the late 1970s Sony's professional audio division had developed the PCM-1600 — the first professional 2-channel digital recorder — opening the era of digital mastering and laying the technical foundation for the Compact Disc.

Sony's approach to 2-track digital mastering was to use existing videotape infrastructure (U-matic VCRs) as storage for digital audio data, dramatically reducing cost compared to custom digital tape systems. The PCM-1600 / PCM-1610 / PCM-1630 lineage became the industry standard for CD mastering throughout the 1980s.

For multitrack, Sony developed an entirely separate format: DASH (Digital Audio Stationary Head), introduced in 1984. Where the PCM-1600 mastering line used rotary video-style heads, DASH used stationary heads on ½-inch tape and offered editable digital multitrack with comparatively easy razor-blade-style editing. The PCM-3324 (24-track) and PCM-3348 (48-track) became the digital multitrack standard at major studios worldwide — competing directly with Mitsubishi's ProDigi format. The PCM-3348HR added 24-bit resolution in the mid-1990s and held position until hard-disk-recording finally displaced it.

In 1982 Sony acquired MCI of Fort Lauderdale, Florida — bringing the JH-24 + JH-110 analog tape machines into the Sony catalogue. Sony continued producing MCI-branded machines (sometimes "Sony/MCI") through the early 1980s, then developed its own analog mastering line — the APR-5000 series (APR-5003 2-track + APR-5008 8-track + later variants) — as Sony's in-house high-end analog offering through the late 1980s and 1990s.

Mitsubishi Electric entered professional audio with its ProDigi format in the early 1980s — a stationary-head digital recording system that competed directly with Sony's DASH standard. Both used fixed heads on linear tape (contrasting with rotating-head consumer digital formats), enabling razor-blade editing and low tape noise.

The X-86 32-track multitrack became Mitsubishi's flagship professional machine, installed at major facilities alongside or instead of Sony's PCM-3324. The X-86HS ("High Sampling") extended the format to 96kHz sampling, an extraordinary specification for the late 1980s that positioned it as an early high-resolution recording platform. Conway Recording Studios, A&M Studios, and several Tokyo-based facilities ran X-86 machines.

Mitsubishi's ProDigi format ultimately lost the standard-setting race to Sony DASH, which had broader adoption and longer manufacturer support. By the mid-1990s hard-disk-based recording was displacing all tape-based digital formats, making the X-86 lineage collectible as one of the earliest 96kHz-capable professional recorders.

TEAC (Tokyo Electro-Acoustic Company) was founded in 1953 and grew into one of Japan's leading consumer electronics manufacturers. The company changed home recording in 1972 when it released the A-3340 — an affordable 4-track open-reel recorder that put multitrack recording in reach of individual musicians for the first time.

Before TEAC, multitrack recording required a professional studio. After the A-3340, musicians could record overdubs, build arrangements, and experiment with production techniques at home. TEAC's machines seeded a generation of self-produced recordings and established the consumer multitrack market that Tascam later developed into the cassette-based Portastudio.

Fostex was established in 1973 as a division of Foster Electric and became one of the most important suppliers of project studio equipment through the 1980s and 1990s. The company specialised in pushing track counts higher while keeping prices accessible — making 8-track and 16-track recording available to studios and individuals who could not justify the cost of professional open-reel machines.

Tascam was established in 1971 as the professional audio division of TEAC Corporation. Where TEAC targeted consumers, Tascam aimed at working musicians, project studios, and small commercial facilities — users who needed professional features at a price point below the established professional brands.

Tascam's most famous product was the Portastudio cassette multitrack of 1979, which brought 4-track recording to cassette tape. But Tascam also produced a range of serious open-reel machines — the 38 and MSR-16 in particular — that gave project studios genuine multitrack capability on formats far more affordable than two-inch tape.

3M (Minnesota Mining and Manufacturing) is primarily known as the world's leading manufacturer of magnetic recording tape — the Scotch brand was a 3M product. But through the 1960s and 1970s, 3M also produced a small range of professional tape recorders featuring their proprietary Isoloop tape path technology.

The Isoloop design — 3M's proprietary tape path development — created a loop of unsupported tape between the supply and takeup sides of the transport, isolating the head block from mechanical disturbances. The result was exceptional speed stability and head-to-tape contact, making 3M machines highly regarded in studios where accuracy was paramount.

Telefunken was founded in 1903 in Berlin as a joint venture between Siemens and AEG, and became one of Germany's most important electronics companies. Through the mid-20th century, Telefunken equipment — both microphones and tape recorders — set the standard for German broadcasting and recording.

The M15 series machines were the tape recorders of choice for German and wider European broadcasting facilities through the 1970s and into the 1980s. Where Studer dominated the Swiss, British, and American markets, Telefunken held equivalent status in Germany — known for mechanical precision and a sound character that European engineers favoured for classical and orchestral recording.

Telex Communications was founded in 1936 in Minneapolis as a manufacturer of hearing aids; in 1957 the company acquired the Magnecord tape recorder line and became one of America's leading suppliers of broadcast and industrial tape equipment through the 1960s and 1970s.

The Magnecord Series 1400 broadcast quality recorder/reproducer carried the brand's reputation for reliability into the colour-television era — die-cast aluminium frame, three speeds (3¾ / 7½ / 15 ips), DTL logic controls, catenary head block. Telex/Magnecord machines populated radio stations and broadcast facilities across America. Today Telex is owned by Bosch Communications.

Crown International was founded in 1947 in Elkhart, Indiana by Clarence C. Moore, initially building tape recorders for missionary broadcast work. Through the 1960s and 1970s Crown became a leading American manufacturer of professional open-reel recorders alongside the studio power amplifiers (DC-300, D-150) that made the brand famous.

The CX-822 series and SX-700 became favourites of broadcasters and house-of-worship recording engineers, and the company's combination of tape recorders + power amps + microphones meant a complete signal chain could be sourced from a single American manufacturer. Crown is now part of Harman International.

Custom Fidelity was a small American manufacturer of professional multitrack tape machines in the late 1960s and early 1970s, best remembered for the Pro Master 16 — one of the early 2-inch sixteen-track machines available to project studios that could not afford the price of Ampex or 3M equivalents.

The company is largely undocumented in modern reference works; surviving evidence comes primarily from period advertisements in trade magazines such as Recording.

Gauss Electrophysics was founded in California in the early 1960s, building specialised tape duplication machines for the music and broadcast industries (the company was later owned by Cetec, the Los Angeles audio conglomerate). The Series 1200 and 1400 high-speed duplicators were industry standards through the 1970s, mastering pre-recorded cassettes and 8-tracks at 32× and 64× normal speed.

While not a studio recording machine in the strict sense, Gauss duplicators were the bridge between studio masters and the consumer market — making millions of cassette and 8-track copies a standard part of the music distribution chain.

Stephens Electronics was founded in Burbank, California by John Stephens in the early 1970s as a manufacturer of professional multitrack tape recorders. The company's most distinctive product was the only 40-track 2-inch recorder ever produced commercially — a machine that pushed the limits of analog multitrack format density at a moment when 24 tracks was the industry standard.

Stephens machines populated a small but devoted set of Los Angeles studios in the 1970s and 1980s — Crystal Sound, MCA's Whitney Studios, and others. The 821-B (24-track) was the workhorse model; the 40-track was the curiosity. Stephens machines were known for their precise transport, but the company never reached the scale of Ampex, 3M or Studer; production ended in the early 1980s.