UE PREMIER in-ear monitors have a frequency range of 5 Hz to 40 kHz — far beyond the roughly 20 Hz to 20 kHz range of human hearing.
Humans have a hearing range of about 20 Hz to 20 kHz. That’s an oversimplification — individual hearing ranges vary widely — but the 20 Hz to 20 kHz band is generally accepted as the audible spectrum. So why did UE engineer PREMIER to accurately reproduce frequencies from 5 Hz to 40 kHz?
Listening devices that go beyond the range of human hearing produce a more natural and accurate sound. The reasons trace back to how engines operate, how studio engineers mix records, how harmonics shape what we perceive as the character of an instrument, and how the body responds to bass we can’t consciously hear.
Why we engineered UE PREMIER with a 5 Hz - 40 kHz range
Better performance in the audible range
Consider how cars are engineered. A Ferrari 812 Superfast tops out at 211 miles per hour. Most drivers will never come close. So why build a car that goes that fast?
Because engines run more efficiently in the middle of their operating range — they’re more responsive and reliable when they’re not pinned at their limit. A car that tops out at 90 mph struggles at 75. A car that tops out at 200 cruises at 75 effortlessly. The same principle applies to in-ear monitors. By extending UE PREMIER’s frequency range to 5 Hz - 40 kHz, the core audible band of 20 Hz - 20 kHz reproduces cleanly, with headroom. The lowest lows and highest highs have runway.
Matching the extended capability of studio gear
Working studio engineers have used extended-range gear for years. High-end studio reference monitors routinely reproduce frequencies up to 40 kHz. Audio interfaces with frequency response from below 10 Hz to 40 kHz are standard in serious studios. Small-diaphragm condenser microphones can capture audio from 9 Hz to 40 kHz.
The studio chain — from microphone to mixing console to monitor — already handles extended frequencies. UE PREMIER brings that same extended range to a portable, custom-fit in-ear monitor. For musicians, engineers, and producers who want faithful reproduction outside the studio, UE PREMIER is the tool that completes the chain.
Why engineers preserve extended frequencies
Sound engineers understand the importance of extended frequencies. If frequencies beyond human hearing didn’t matter, every recording engineer would drop a 20 Hz - 20 kHz bandpass filter on every track without a second thought. Many engineers preserve a wider frequency range, because the extended content carries harmonic information that shapes how the audible content is perceived.
Sub-low and ultra-high frequencies can cause issues in mixes — boomy low end, harshness in cymbals. The experienced engineer’s approach is to identify the specific problem frequency and address it surgically. The default move is to leave the full range intact and shape it as needed.
How frequencies beyond human hearing affect what you hear and feel
High frequencies and the harmonic series
Humans can’t hear above 20 kHz, but we can perceive higher frequencies through harmonics and overtones. That perception shapes how we hear music.
A piano playing middle A produces a fundamental frequency of 440 Hz. It also produces overtones (resonant frequencies above the fundamental) and harmonics (integral multiples of the fundamental — 880 Hz, 1,320 Hz, and so on). Those overtones and harmonics are what make a piano sound different from a guitar playing the same note. Strip them away and every instrument starts to sound similar.
A wider frequency range lets a playback device reproduce these natural harmonic frequencies along with the fundamentals. With UE PREMIER’s 40 kHz upper range, even the harmonic content from the highest notes humans can hear gets faithfully reproduced.
Those higher frequencies are common in music. According to Caltech researcher James Boyk’s survey There’s Life Above 20 Kilohertz, at least one member of each instrument family — strings, woodwinds, brass, and percussion — produces energy at 40 kHz or above. The harmonics of a violin or oboe exceed 40 kHz. A muted trumpet reaches 80 kHz. A cymbal crash was recorded at 100 kHz. Even a small jazz combo runs across most of UE PREMIER’s frequency range.
Low frequencies and physical sensation
High frequencies shape what we hear. Low frequencies shape what we feel.
The body senses low-frequency vibration through tactile receptors in the skin, not only through the ears. As Science News Explores explains, the body has receptors that detect movement, touch, and air vibrations caused by loud sounds — meaning we feel low frequencies even when we can’t consciously hear them.
This is obvious at a hip-hop or EDM show where the bass moves your chest cavity. It’s also true with in-ear monitors. The custom-molded fit of UE PREMIER creates direct contact between the IEM and the ear, allowing low-frequency vibrations to transfer to the tactile fibers in the ear that perceive low-end sensation.
Research suggests that feeling these low frequencies increases enjoyment of music. A 2019 study Feel the bass: Music presented to tactile and auditory modalities increases aesthetic appreciation and body movement found that audio combined with tactile low-frequency vibration increases aesthetic appreciation and body movement. A 2022 study, Undetectable very-low-frequency sound increases dancing at a live concert, toggled inaudible low-frequency speakers on and off during a live concert and measured the audience moving more when the frequencies were on.
Extended-range listening in your monitoring chain
The music you already listen to contains frequencies outside the range of human hearing. The right equipment makes those frequencies present in the listening experience, and the result is a more lifelike, more accurate sound — closer to what the musicians played and the engineers captured.
UE PREMIER is built for this kind of listening. With 21 drivers per side, a five-way crossover, and a frequency range of 5 Hz to 40 kHz, UE PREMIER reproduces the full harmonic and low-frequency content of recorded music. For more on using UE PREMIER as a reference tool for Spatial Audio listening and Atmos production, see Spatial Audio for Music Producers and Engineers. For a broader look at in-ear monitoring vs. traditional stage wedges, see In-Ear Monitors vs. Wedges.
Frequently asked questions
What is the frequency range of UE PREMIER in-ear monitors?
UE PREMIER has a frequency range of 5 Hz to 40 kHz, well beyond the 20 Hz to 20 kHz range of human hearing. The extended range allows UE PREMIER to reproduce the full harmonic content of recorded music and to operate efficiently across the audible spectrum without straining at the limits.
Why do some in-ear monitors reproduce frequencies humans can’t hear?
Extended frequency range produces a more natural and accurate sound for two reasons. First, drivers operate more efficiently in the middle of their range, so reaching beyond 20 kHz means the audible band reproduces with more headroom and clarity. Second, frequencies above 20 kHz carry harmonic information that shapes how we perceive the audible content — strip it out and the music starts to sound less alive.
How do harmonics and overtones affect the way we perceive music?
When an instrument plays a note, it produces a fundamental frequency plus overtones (higher resonant frequencies) and harmonics (integral multiples of the fundamental). These higher frequencies are what make a piano sound different from a guitar playing the same note. Many instruments produce harmonic content above 40 kHz — well beyond what the ear can directly detect — but those harmonics still shape what we perceive as the character of the instrument.
Can you feel low frequencies even if you can’t hear them?
Yes. The body has tactile receptors that detect movement, touch, and air vibrations from loud sounds. Research has shown that audiences move and dance more when very-low-frequency content below the threshold of human hearing is present. With UE PREMIER, the custom-molded fit creates direct contact between the IEM and the ear, allowing low-frequency vibrations to transfer to the tactile receptors in the ear.
Who is UE PREMIER built for?
UE PREMIER is built for musicians, engineers, producers, and serious listeners who want studio-grade playback in a portable custom-fit in-ear monitor. With 21 drivers per side, a five-way crossover, and a 5 Hz to 40 kHz frequency range, UE PREMIER serves reference listening, live performance, recording sessions, and critical playback for engineers working in formats like Dolby Atmos.
Explore UE PREMIER
Discover UE PREMIER — UE Pro’s flagship custom in-ear monitor, engineered with a 5 Hz to 40 kHz frequency range for the most demanding listening environments.