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Microphones & preamps

RCA Type 44

A ribbon mic that tells you exactly where sound comes from—and exactly where it will break.

Worth your time?4/5Yes.Use the whole thing.What works, what does not, who it is for ↓
9:08in productionCh. 1 · Bi-directional by design/ 9:08 · ceiling 15 min
4 chapters · 9:08Ceiling 15:00

The brief is written and checked. The video joins this page when it is cut.4 chapters · 1 min read · 9:08 planned

Read the brief

The RCA Type 44 is a bi-directional ribbon microphone introduced in 1931. Its thin corrugated metal ribbon generates voltage when vibrating in a magnetic field. It hears only front and back. It breaks under wind, phantom power, and loud transients. It flatters voice and acoustic instruments with smooth mids and gentle highs. It belongs in a vintage studio chain—not on a podcast desk or a stage.

Chapters & takeaways4
  1. 1:04
    Bi-directional by design

    It hears only front and back—nothing from the sides.

  2. 2:39
    The ribbon is its nerve

    A 2.5-micron ribbon, crimped at 19 pitch, moves like silk in air.

  3. 4:14
    Physics, not circuitry

    Voltage appears at right angles to motion and magnetism—no coil, no capacitor, no compromise.

  4. 5:33
    Built for 1931, not 2024

    It was built for radio studios—not stages, not laptops, not loud rooms.

1 more chapterFewer chapters
Worth your time?

Yes. Use the whole thing.

4/ 5
What works
  • bi-directional capture
  • voice warmth
  • acoustic instrument texture
  • midrange clarity
What does not
  • work with phantom power
  • handle high SPLs
  • suit field recording
  • fit modern workflows
Use it if
  • vintage studio engineers
  • broadcast historians
  • ribbon purists
Skip it if
  • podcasters
  • live sound engineers
  • beginners
Who should use it, and who should skipHide who it is for
The written brief1 min read

What it is and what it was built for

The RCA Type 44 is a bi-directional ribbon microphone built in 1931 for broadcast speech and orchestral pickup in controlled studio environments.

How it works, in terms a player would use

It captures sound from front and back only. The thin corrugated metal ribbon vibrates in a magnetic field. Voltage appears at the ribbon ends when it moves.

What it does better than anything else

It delivers a smooth, natural midrange and gentle high-end roll-off that flatters voice and acoustic instruments. Its bi-directional pattern gives precise off-axis rejection without phase smear.

What it does badly

It fails under strong air movement. It cannot tolerate phantom power. It distorts easily on loud transients. Its output is low and requires clean, high-gain preamps.

What people made with it

Broadcasters, radio networks, and recording engineers used it for voice, strings, and brass in the 1930s and 1940s.

Who should use it, and who should not

Studio engineers who work with vintage signal chains and value tonal character over convenience should use it. Live performers, field recordists, and beginners should not.

Is it worth your time

Yes—if you need a bi-directional ribbon with vintage character and can protect it from wind, handling noise and phantom power. No—if you need durability, high SPL headroom or modern flexibility.

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8:24
RCA Type 77-DX microphoneRCAThe RCA Type 77-DX is a 1954 poly-directional ribbon microphone with mechanical pattern control, low-tension 2.5-micron ribbon, and user-selectable impedance and low-frequency rolloff.
9:32
Electro-Voice RE20Electro-VoiceThe Electro-Voice RE20 is a professional cardioid dynamic microphone introduced in 1968 for broadcasting applications. It employs Variable-D technology—a single transducer element with internal porting—to eliminate proximity effect and maintain stable frequency response regardless of source distance. It features a switch to attenuate frequencies below 400 Hz, a humbucking coil for EMI rejection, and a deeply mounted element to handle high SPLs. It delivers excellent fidelity despite its large size and weight. It continues to be used in recording studios and on the concert stage.
9:41
Shure 55SHShureThe Shure 55SH is a 1939 cardioid dynamic microphone built for public address. It delivers vocal clarity under load, resists feedback, and shrugs off physical stress. It does not offer studio-grade fidelity or flexibility. It belongs on podiums—not in overdub booths.
10:30
Neumann U 47Neumann · 2015The U 47 is a historically significant but operationally constrained microphone. Its innovation lies solely in being the first switchable-pattern condenser — a functional milestone, not a sonic benchmark. It demands specialist maintenance, offers no modern conveniences, and has no documented sonic signature beyond its era-specific implementation. It belongs in a museum or a dedicated vintage studio — not a general-purpose rig.
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