Has Active Noise Cancellation (Noise Control)
Sennheiser Momentum True Wireless 4
✓
JBL Tune Flex ✓
Active noise cancellation uses more advanced kind of tech to reduce unwanted ambient sounds. How it works, it studies the sound pattern outside and inside the earbud and after generates a mirror signal to cancel it out. Simply put, it's like taking +1 (sound from your surrounding) and adding -1 (inverted noise) giving 0 resulting in a reduced level of noise.
The Sennheiser Momentum True Wireless 4 have Active Noise Cancellation allowing you to listen at lower levels of volume, good for your ears as you don't need to crank up the earbuds volume to overcome background sounds.
JBL Tune Flex too have ANC making both earbuds ideal for flights and rush hour travels. Each operate with different noise cancellation modes, pick the noise cancellation type that you prefer for commute or that enhances your chill time.
Has Passive Noise Reduction
Sennheiser Momentum True Wireless 4
✓
JBL Tune Flex ✓
Sennheiser Momentum True Wireless 4 stay well in place, creating an acoustic seal that tones down background noise well as preventing the earbuds music from leaking out .
Both of these devices have passive noise reduction which implies that both tone down ambient noise without using technology to cancel it out.
Driver Unit Size
Sennheiser Momentum True Wireless 4
7mm
JBL Tune Flex 12mm
Sennheiser Momentum True Wireless 4 driver unit is 7mm in diameter, the bigger the unit the more powerful, therefor producing better bass.
The driver unit is the component that makes sound in the device, the unit size dictates the loudness of the device.
JBL Tune Flex driver unit is 12mm in diameter,
making them have a larger driver unit than that of Sennheiser Momentum True Wireless 4 by 5mm
, as many tend to believe that driver units of a bigger size automatically produce better sound quality.
However, large drivers find it difficult to produce high frequencies so it's true that, larger drivers can generate louder sound, but this does not mean that they produce better quality sound.
Lowest Frequency
Sennheiser Momentum True Wireless 4
5Hz
JBL Tune Flex 20Hz
The Sennheiser Momentum True Wireless 4's lowest frequency is at 5Hz, low-frequency response inidcates how well a particular audio device generates low recognizable frequencies and if it alters the signal on its way through.
JBL Tune Flex's lowest frequency is at 20Hz, this means that
Sennheiser Momentum True Wireless 4 produce a juicier bass than the JBL Tune Flex
Highest Frequency
Sennheiser Momentum True Wireless 4
21,000Hz
JBL Tune Flex 20,000Hz
The Sennheiser Momentum True Wireless 4's highest frequency is at 21,000Hz, high-frequency response indicates how well an audio component generates high human frequencies and if it makes any adjustments to the signal while at it.
JBL Tune Flex's highest frequency is at 20,000Hz, this means that
Sennheiser Momentum True Wireless 4 can produce a clearer and crispier treble than the JBL Tune Flex
Sound Pressure Level
Sennheiser Momentum True Wireless 4
107dB/mW
JBL Tune Flex 108dB/mW
SPL, is the level of pressure of sound, in decibels, dB, Sennheiser Momentum True Wireless 4's measurement is 107dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
JBL Tune Flex's sound pressure level measurement is 108dB/mW. The sound pressure level, something is can be taken differently by different people, so we need to have a way of getting an objective measurement of sound level expressed in numerical terms.
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