T-67 Microphone Kit

$ 439.00

T-67 Microphone Kit

The T-67 is a workhorse studio microphone with wideband frequency response and rich harmonic content. Its sonic inspiration is the Neumann U67.

We designed the T-67 for easy assembly by intermediate-level hobbyists; the component count is low for a large-diaphragm condenser, and the process benefits directly from our experience designing and supporting the 15,000 DIY microphone kits we've shipped over the past decade.

This product was introduced in December, 2021. The first production run sold out in about three days.


About the Capsule

The T-67 kit would not be possible without our new RK-67D capsule. This product has been in development for several years; it is unlike every other K67 capsule on the market. It delivers a flat frequency response through the midrange, very slight (~1dB) attenuation in the sibilance frequencies, and a gentle, smooth lift (~1.5dB) in the "air" band.

The RK-67D capsule is not available separately.

About the Circuit

The T-67 circuit is based on a vintage Neumann FET design, with numerous proprietary updates and upgrades. It utilizes a short and direct audio signal path, to minimize the number of components that could introduce unwanted distortion or phase anomalies.

Every component in this circuit was selected to complement the sound of the finished microphone. This includes the vintage JFET, which is manually "biased" in our proprietary fixture, vintage film capacitors, and 1% matched resistors with low thermal noise. This circuit has been described as capturing a richer, "warmer" sound than alternatives.

The circuit in the T-67 delivers all the same sonic benefits as the incredibly popular T-84 circuit found in our T-12 and T-47 microphones, with improved clarity across the entire frequency range. This product also introduces a new custom transformer, developed specifically for this kit; see details below.

Visual Color Choices

The T-67 microphone body has a matte black finish, with a vintage diamond MicParts logo badge. Alternative custom powdercoat colors can be ordered here.

The grille is a 2-layer brass mesh with satin nickel finish.

About the Body (and switches)

The body has no external switches. This microphone has two internal switches, one for pattern (C/O) and one for pad. To access the switches, spin the end cap off of the bottom of the mic, and slide the body sleeve down.

It is best to unplug the mic from phantom power before opening the mic.


  • Mic body, chassis, grille, and PCB mounting screws
  • Swivel mount
  • Zippered vinyl pouch
  • Custom PCBs that were designed for DIY assembly
  • Hand-picked circuit components
  • RK-67D capsule, supersaddle, screws, and wires
  • Choice of custom-wound transformers
  • Comprehensive step-by-step DIY installation guide
  • Tech support via email


Transformer Options

The "MP6.5" transformer offers smooth, flat frequency response from 20Hz to beyond 20kHz, with musical and predictable harmonic coloration. This transformer has won dozens of shootouts and earned hundreds of positive reviews and testimonials within our T-47 and T-12 microphone kits.

The MP6.5 has been in extremely limited supply since August, 2020. 

The "T6.5" transformer matches the size and turns ratio of the MP6.5. It offers smooth, flat frequency response from 20Hz to beyond 20kHz, with musical and predictable harmonic coloration. If you happen to have a signal injection rig, you will see that the T6.5, when used in this circuit, has approximately 2dB higher second harmonic content. This transformer has earned many positive reviews and testimonials within our 990XF kit.

The "Platinum 6.5" transformer is new. We developed this component to see if we could beat the MP6.5, with the intention of reserving it for our Platinum series microphones. After ten iterations, we found a combination of metallurgies and winding techniques that delivers on its elusive design goal. The MP6.5 was already better than all the famous-brand alternatives we tested, and was difficult to beat, but we have finally did create something we prefer. When compared to the MP6.5, the Platinum transformer is smoother, especially at the top of the audible range, has more sustain, has deeper and cleaner low frequency response (below 100Hz), and has a more open soundstage. These are subtle upgrades. We find the combination to be compelling.

The Platinum transformer will become available again in February, 2022. (If the website lets you order this option, it means we still have one in stock. If this option is marked "sold out," it means someone else bought the last one.)


What about a shockmount?

We are occasionally able to stock the Rycote Invision USM-L. This design offers good mechanical isolation without inducing resonance or hum. The universal design fits any lightweight cylindrical LDC mic up to 55mm in diameter.

Not ready for DIY?

We can build the T-67 for you. Contact us for options.


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