What is 3Dio

3Dio Free Space are binaural microphones that can record stereo sound with very high quality. They are suitable for musicians as well as for use in everyday life. For example, they give excellent stereo sound outdoors, without overloading even in windy conditions.  Often they are used as an ASMR microphone. By the way, find out more about what is ASMR and why people are so passionate about it.

Today we will talk about two 3Dio microphones. The budget Free Space and the expensive Free Space Pro II

3Dio Free Space (Frequency range 60 Hz – 20 kHz)

The Free Space Binaural Microphone is the most affordable high-quality binaural microphone on the market. The built-in microphone capsules are extremely sensitive and silent. The capsules look very natural and are ideal for binaural recordings. Free Space is a professional quality portable stereo system that is in the palm of your hand. Free Space has a very warm and solid response in the bass and midrange. This emphasizes power and also provides bass support for heavy bass. The frequency response of the capsules used in Free Space falls just above 10 kHz. This is excellent for recording instruments with loud high frequencies, such as drum cymbals or acoustic guitars. It also prevents any harsh effects that are sometimes associated with binaural recordings using smaller capsules. 

The microphone works well in windy conditions, even without protection. The wind sounds realistic without affecting the stereo sound or overloading the microphones.

Check the sound quality 3Dio Free Space  microphone. For best effect, listen with good headphones. 

3Dio Free Space Pro II (Frequency range 20 Hz – 20 kHz)

3Dio Free Space Pro II comes with two matched DPA 4060 integrated capsules installed in the ear canal opening. Free Space Pro II provides a very sensitive and natural binaural recording. The extremely low noise level of the DPA 4060 capsules provides a very open and dynamic binaural realism, especially during very sensitive recordings. This sensitivity combined with the wide dynamic range of the microphone capsules makes the Free Space Pro II ideal for professional studio recording and high-quality binaural capture. The quiet “openness” of the microphone is also great for field recording.

XLR phantom power output

This updated version of Free Space includes two balanced stereo XLR outputs that support phantom power. Connect the Free Space Pro II to a 48V power supply from a preamp, digital recorder, or mixing console. The Free Space Pro II also includes a 1/8″ stereo output that is powered by an internal 9V battery. Phantom power operates independently of the 9V battery status. 

Check the sound quality 3Dio Free Space Pro II  microphone. For best effect, listen with good headphones. 

Why does it sound so natural?

Free Space captures sound the same way we hear sound in the real world with our ears. When you listen to a recording made with Free Space using 3D-enabled headphones or speakers, you hear sound as if you were there at the time of the recording. The effect is so powerful because Free Space’s design is based on more than 13 years of research into binaural technology and human hearing.

What is HRTF?

HRTF is an acronym for Head Related Transfer Function. HRTF is a phenomenon that describes how the ear perceives sound from a sound source. When sound is emitted, it propagates in space in all directions as a sound wave. This sound wave propagates from the sound source in all directions like a rapidly expanding sphere.

Sounds bounce off objects near the sound source and sound waves reach the listener from many different directions and sometimes reach the listener’s ear canal directly. When sound waves reach the listener, they are transformed by the listener’s body. The ears, head, shoulders, and even the torso contribute to the HRTF. Specifically, the size and weight of the head, the shape of the ear, the length and diameter of the ear canal, and the size of the mouth and sinuses all affect incoming sound waves, amplifying some frequencies and attenuating others. These changes in the frequency profile of sound help create a unique perspective and perception for the listener. These changes also help the listener locate the source of the sound. HRTF is a change in the source of sound.

That’s why 3Dio is so good

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