Large Diaphragm Tube Condenser Microphone

The UT Tube67 is United’s faithful homage to one of the most in-demand mic designs of all time. The original classics have shaped the sound of countless classic recordings since their debut 1960. The UT Tube67’s provides a warm, intimate quality that only can be delivered by it’s 1960’s NOS EF86 vacuum tube.

Silky-smooth tube sound.

​The UT Tube67 is a United’s faithful homage to one of the most in-demand mic designs of all time. The original classics have shaped the sound of countless classic recordings since their debut 1960. The UT Tube67’s smooth top-end makes it an outstanding choice for vocals. Its 1960s NOS EF86 vacuum tube imparts a warm, intimate quality that no other component can deliver. Linear response across polar patterns ensures versatility, excelling in capturing strings, woodwinds, brass, piano, drums, and both acoustic and electric guitars. ​

United has taken this classic-specification design to the next level with component-level attention to detail. Including a switchable Air Modification preferred by many classic recordists.

A Custom United UT K67 Capsule.

The UT Tube67’s capsule is a custom-made, historically correct dual backplate/diaphragm capsule. Skinned in a laboratory clean-room environment and 24k gold-sputtered on 6 micron Mylar. It has been optimized for the microphone’s operating voltage, and tuned to it’s ancestors’ specification. Resulting in a smooth sound without the resonance that is found on most modern reproductions. The difference in comparison to other reproductions is incredible.

We based it’s design on a 1970’s-made capsule that we found to be the best we had ever heard — providing a little more natural low to low-mid range frequency.

Custom United Transformers.

We wind the custom, US-made UT-BV12 transformer to our own specifications, using the exact same laminations as the original parts. By meticulously measuring a ‘golden specimen’ of the original transformer, we deliver that same legendary, tight bass response

We used all high-nickel alloy laminations and employed a copper Faraday shield for reduced Radio Frequency Interference (RFI). While we could have used a smaller or less expensive transformer, United’s design team refuses to compromise.

It’s not just another mic — it’s a United.

The UT Tube67 is a personal homage to one of our favorite classics.  Certainly! Let’s give that classic the recognition it deserves.We have gone the extra mile to reduce noise and RFI. The UT Tube67 delivers boutique-quality sound in a build that lasts.

From the custom-made Sommer Octave 7 pin cable to the regulated power supply, to all final assembly and testing conducted in the USA at United’s base of operations. We have left no stone unturned in the pursuit of the highest level of audio quality. The Tube67 is an exceptional microphone to grab for almost any application.

Don’t forget to take a look at our other United Studio Technologies products!

Visit the United Technologies website for more info.