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United Studio Technologies UT Twin87 Twin-Circuit Large-Diaphragm Microphone

BH #UNUTTWIN87 • MFR #UT TWIN87
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United Studio Technologies UT Twin87 Twin-Circuit Large-Diaphragm Microphone
Key Features
  • For Vocals and Instruments
  • Cardioid, Figure-8 & Omni Polar Patterns
  • Switchable Vintage or Modern Circuit
  • Custom K87 Derived Capsule Design
The UT Twin87 Twin-Circuit Large-Diaphragm Condenser Microphone by United Studio Technologies is their take on the classic, multi-pattern, dual-diaphragm U87, offering you two circuits that allow you to switch between the classic, warm vintage sound and a slightly hotter and brighter modern take. No more painful choices between one style or the other, the UT Twin87 reconfigures itself on the fly for a versatile design intended to make it even more of a workhorse than its inspiration.
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United Studio Technologies UT Twin87 Overview

The UT Twin87 Twin-Circuit Large-Diaphragm Condenser Microphone by United Studio Technologies is their take on the classic, multi-pattern, dual-diaphragm U87, offering you two circuits that allow you to switch between the classic, warm vintage sound and a slightly hotter and brighter modern take. No more painful choices between one style or the other, the UT Twin87 reconfigures itself on the fly for a versatile design intended to make it even more of a workhorse than its inspiration.

The custom-designed UT Transformer, which features nearly four times the metal mass of most "87-style" mics, is made in the US and delivers ultraclean and quiet operation. The custom capsule, based heavily on the classic K87, features dual-diaphragms and three polar patterns, including an especially punchy and directional cardioid mode, a useful bidirectional figure-8 mode, and an omnidirectional mode for minimizing signal color or providing exceptional room coverage. Ideal for vocals, general studio recording, and broadcast/podcast applications, the UT Twin87 resurrects a vintage classic without the vintage price tag.

Innovative Dual-Circuit Topology
Rather than having to choose between the original U87 circuit and the more modern revisions, United chose to incorporate both into their design. A switch allows selection between these two circuits. Vintage mode produces a signal path that is identical to the original "87-style" microphones, yielding a smoother, warmer sound. Modern mode gently polarizes the capsule at a higher voltage (63v) using an FET oscillator circuit, resulting in a higher sensitivity and a hotter signal for the amplifier. This yields a louder, brighter, and more coherent sound with an enhanced top end.
Custom UT K87 Capsule
United custom-designed their own take on the classic K87 style capsule. This dual-diaphragm, dual-backplate design is milled from brass and skinned with 6 micron Japanese PET film (Mylar), and has a 24k gold sputtered membrane. The UT-Series capsule is terminated with a very fine strand of silver-plated Teflon wire which, in conjunction with thorough insulation, reduces any interference or induced loss. Even the metal mesh was given careful consideration, using the exact mesh gauge and three layer mesh makeup of the original headbasket.
Custom-Designed United Transformer
After carefully considering numerous German designs for the original U87 transformers, United opted to build their own design which contains nearly four times the metal mass found in any "87-style" microphone. This transformer is custom-wound, with large, all nickel laminations. This results in an open, clear, three dimensional sound with high headroom and plenty of signal strength for long cable runs.
Switchable RF Filter
Like most modern "87-style" microphones, the UT Twin87 features an output filter designed to block RF and EM interference, a particularly useful feature for broadcast applications. Over the years however, some engineers have debated the sonic impact of this filter and its potential to negatively affect the quality of the output signal. United have solved this problem by adhering to the same design philosophy driving the UT Twin87s overall concept; to include both. Thus, the RF blocking filter can be switched on or off in either vintage or modern mode.
True-Cardioid Mod
When set to cardioid pattern mode the UT Twin87 engages a boutique modification called "true-cardioid mod". Rather than the standard switching design used in most multi-pattern mics, the UT Twin87 disengages the pattern selection circuitry altogether and decouples from the rear diaphragm. This produces a slightly hotter signal and a better signal-to-noise ratio.
Plenty of Hands-On Control
The UT Twin87 includes plenty of onboard control for excelling in a variety of scenarios. A switch on the front allows selection of multiple polar patterns including an exceptionally hot and directional cardioid mode, a useful bidirectional figure-8 pattern, and a classic omnidirectional mode for minimal sound coloring and room ambiance. A convenient high-pass filter set at 80 Hz makes it easy to setup the UT Twin87 for vocals, guitar, drum overheads, or to eliminate rumble during broadcast or podcast use. And the -10 dB pad switch increases maximum SPL resiliency making the UT Twin87 more viable as a mic for loud sound sources such as kick drums and amplified cabs.
Built to Last
Entirely handmade in the US and rigorously tested before shipment, the UT Twin87 is built to exacting standards. Electroplated nickel and solid milled brass are used for the durable body, while the US-made UT transformer is custom-wound and large-cored. NOS (new old stock) parts and high-end components such as polystyrene, tantalum, multilayer ceramic, WIMA film capacitors, metal and carbon film resistors, and hand-selected transistors ensure an authentic U87-style sound quality that engineers around the world have come to expect.
UPC: 753459780565

United Studio Technologies UT Twin87 Specs

Key Specs
Microphone Type
Large Diaphragm
Polar Pattern
Cardioid / Figure-8 / Omnidirectional
Element Type
2x Condenser
Controls
Low Cut/HPF, Mode, Pad, Polar Pattern
Frequency Response
20 Hz to 20 Hz
Maximum SPL
117 dB (.5% THD)
127 dB (.5% THD, with Pad)
Analog Output
1x XLR 3-Pin Male
Power Sources
Phantom Power
Microphone
Microphone Type
Large Diaphragm
Polar Pattern
Cardioid / Figure-8 / Omnidirectional
Element Type
2x Condenser
Sound Field
Mono
Diaphragm
1.3" / 34 mm
Orientation
Side Address
Controls
Low Cut/HPF, Mode, Pad, Polar Pattern
Pad
-10 dB
Filter & EQ
Low-Cut Filter: 80 Hz, 12 dB/Octave
Circuitry
Solid-State (FET)
Performance
Frequency Response
20 Hz to 20 Hz
Maximum SPL
117 dB (.5% THD)
127 dB (.5% THD, with Pad)
Connectivity
Analog Output Connector
1x XLR 3-Pin Male
Power
Power Sources
Phantom Power
Operating Voltage
48 V (Phantom Power)
Physical
Color
Nickel
Dimensions
ø: 2.2H: 8.7" / ø: 55H: 220 mm (Microphone)
L: 7.5" / L: 190 mm (Mount)
Packaging Info
Package Weight
3.705 lb
Box Dimensions (LxWxH)
17.9 x 6.7 x 6.4"

United Studio Technologies UT Twin87 Reviews

Cleanest Mics I have!

By Jean
Rated 4 out of 5
Date: 2026-03-26

I have a used a few different 48v powered mics and own three including a nuemann, MXL, and a Zoom SGV-6 shotgun microphone, but I’ve used blue mics, U87 clones, akg mics and a number of other mics as well. This has to be by far the cleanest mic I’ve used so far. It was recently used with a tube pre with transformers, an eq with transformers as well, with the vintage switched on, adding some real nice coloration to the signal. I plan on trying this mic on singing and rap vocals soon, but so far this has done a great job capturing clean flat signal right out the box.

I am a believer

By Matt
Rated 5 out of 5
Date: 2025-02-11

This is the second mic from this new company with an apparent dedication toward excellence while at the same time delivering on a theme of great value. Yes, it really is two different mic circuits squeezed into a single body. Yes,n the 'vintage' circuit has a big output transformer delivering upon all the promise of what a U87 is supposed to give up. And again: YES.... This is an all-around performer that you can use on pretty much anything if you are in doubt about which mic you should choose. It delivers vocals up front in the mix with aplomb. Two of these for L/R drum over head mics in vintage mode capture detail across the spectrum and never get harsh. I could go on with more but let me say, yes, I am a believer. I bought one and then bought three more. These are great tools and the price is unbelievable.

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