V-Mic D4 DUO Dual Capsule

Quick Look

The world’s first dual-directional video microphone

The D4 DUO’s dual-capsule design allows you to simultaneously capture sound from in front of and behind your camera. Don’t just show your audience the world you live in, tell them about it in full fidelity too!

  • Dual Cardioid Pickup Patterns
  • Low Noise Circuitry
  • AUX Input for Lavalier Microphones or Wireless Receivers
  • No Batteries Required
  • 1/4″ and 3/8″ threaded mounting options

What do you get in the box?

  1. 1x V-Mic D4 DUO
  2. 2x Faux Fur Windscreens
  3. 1x Rycote® Lyre Shockmount
  4. 1x Yellow 3.5mm TRS to TRS cable


For vloggers, this microphone is incredible

Matti Haapoja

All V-Mic D4 DUO features

Patented Dual-Capsule Design

The V-Mic D4 DUO lets you capture the story you want to tell, from every angle. With its unique dual-capsule design and utility, the DUO allows you, for the first time ever, to record the audio coming from behind the camera in full fidelity.

Patent No# ZL202020003381.X, ZL202030182756.9

AUX 3.5mm Input

In accordance with our company motto of “Do More. Carry Less.” the DUO has a 3.5mm AUX input that bypasses audio from the rear capsule and sends the input to the right channel of your camera – perfect for adding a wired lavalier mic or a miniature wireless microphone receiver like the Pocket Wireless.

No Batteries Needed

The V-Mic D4 DUO runs completely off of the 3V Plug-In Power provided by your camera’s microphone jack. Plus, that bias voltage is passed along through the 3.5mm input jack on the D4 DUO, allowing you to use passive TRS lavalier microphones.

Custom Rycote® Shockmount

Deity Microphones and Rycote partnered up to create a custom thermoplastic polyester shockmount for the V-Mic D4 DUO that is stiff enough to support the weight and keep the microphone balanced, but also prevents camera handling noise from being transferred to the microphone.

The BEST microphone for
Vlogging on YouTube

Think Media checks out
the D4 DUO


Frequency Response50Hz-20KHz
Capsule Size14mm
Pickup PatternDual Cardioid
Capsule TypePrepolarized
SensitivityFront(-42±3dB re 1 V/Pa @ 1kHz) / Rear(-51±3dB re 1 V/Pa @ 1kHz)
Maximum SPL120dB(@1KHz,1% THD into 1K)
Microphone TypePassive
Operating VoltageExternal Bias Voltage
AUX Input ConnectorTRS 3.5mm
AUX Input Voltage2-5VDC
Output ConnectorTRS 3.5mm
Output TypeDual Mono / Stereo
Dimensions21mmD x 93.5mmH


Can I plug a wireless receiver into the AUX input?

Yes. Make sure the output of the wireless receiver is the same volume as the front microphone capsule because you can not record them at separate volumes.

Why does my audio sound weird?

If both capsules are on and recording the same subject, the millisecond delay between the two will be slightly audible and you will have phasing issues. If you hear the same audio source in both capsules, edit your audio to only have one track playing at a time.

Why do my left and right channels sound different?

By default, the DUO records the front capsule to the left channel and the right channel will either be the front or the rear capsule, when it is engaged. When you edit your video, make sure to select and properly pan your channels.

Why is my microphone not making sound?

The DUO runs on plug-in power which is supplied by most devices you can plug it into. Some devices, like the Canon Vixia line, do not provide power, in which case the mic will not work.

Is there a User Guide Video?

Yes! Check it out here!