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American Microphone Company DR 330

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Page last updated Nov 09, 2025

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The American Microphone Company DR 330 is a sophisticated addition to any professional studio setup, offering a superbly crafted solution for capturing the nuances of sound with precision. As a ribbon microphone, it excels in delivering rich and warm audio, making it ideal for vocalists and instrumentalists aiming to achieve a classic, vintage tone. This microphone’s unique ribbon technology captures even the subtlest of sonic details, providing a depth of sound that dynamic and condenser microphones often miss.

Crafted with the meticulous care and expertise that American Microphone Company is renowned for, the DR 330 incorporates advanced materials and design techniques. Its figure-8 polar pattern enables it to pick up sound from both the front and back, making it perfect for studio environments where sound source separation and ambient room capture are equally important. This trait also makes it an excellent choice for duet recordings or capturing the ambiance of a room or ensemble.

Whether you're laying down tracks in a professional studio or capturing a live performance, the DR 330 stands out with its reliable performance and high-quality build. It’s not just about capturing sound; it’s about capturing the right sound, every time.

Key Features:

Classic ribbon microphone design for warm, vintage sound
Figure-8 polar pattern for versatile recording applications
Designed for studio environments with a focus on sound detail
High-quality craftsmanship for reliable, long-term use
Ideal for vocals, acoustic instruments, and ambient sound recording

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Marty Mcfly

Singer, Guitarist

The Pinheads

Verified via Coutant

While playing "Johnny B. Goode" at the Enchantment Under the Sea dance, Marty sings into an American Microphone Company DR 330. This is clearly visible in the video below:

https://youtu.be/S1i5coU-0_Q?t=54

Compare with the link here: http://www.coutant.org/american/

Note that the DR 330 is visibly indistinguishable from the R 331 and DR 332. The only difference between these mics is polar pattern. The DR 330 was switchable, the R 331 was bi-directional only, and the DR 332 was cardiod only. Since Marty is using this mic on-stage, we can assume it is either a DR 330 switched to cardiod, or a DR 332. Since Marvin Berry's band had the Cadillac of guitars, along with a real Cadillac (in which Marty was locked in the trunk), we can assume they would have the Cadillac of American Microphone Company mics, which was the DR 330. Conjecture? Maybe.

American Microphone Company was also based in Pasadena, California, making it readily available in Hill Valley, CA. A spec sheet for this family of mics from countant.org is dated 11/15/50. Thus, it is period correct for the 1955 dance, unlike Marty's ES-345 guitar.

Marvin Berry

Singer, Guitarist

Starlighters

Verified via Photo

In a clear visual document, Marvin Berry can be observed utilizing an American Microphone Company DR 330, a detail that underscores the specific gear choice of this jazz artist known for his roles as a singer and guitarist. This evidence is substantiated by a photograph, which captures Berry in the midst of a performance or recording session with the microphone in question.