Has Active Noise Cancellation (Noise Control)
JBL Tune Flex
✓
Devialet Gemini 2 ✓
Active noise cancellation makes use of advanced technology to reduce ambient sounds. How it works, it listens to the sound pattern outside and inside the earbud and after inverts the soundwaves to counter it. In simple terms, it's like taking +1 (noise) and adding -1 (inverted noise) to make zero resulting in a reduced level of noise.
Devialet Gemini 2 have Active Noise Cancellation allowing you to listen at lower levels of volume, good for your ears since you don't have to crank up the earbuds volume to outcompete background sounds.
JBL Tune Flex too have Active Noise Cancellation making either of the devices ideal for flights and rush hour commutes. Each operate with different noise cancellation settings, pick the setting that you prefer for travel or that suites your relaxation time.
Has Passive Noise Reduction
JBL Tune Flex
✓
Devialet Gemini 2 ✓
Devialet Gemini 2 sit tightly in place, this creates a sound seal that tones down background noise and also prevents the earbuds music from leaking out .
Both JBL Tune Flex, and Devialet Gemini 2 have passive noise reduction which means that they tone down ambient noise without using technology to cancel it out.
Driver Unit Size
JBL Tune Flex
12mm
Devialet Gemini 2 10mm
The Devialet Gemini 2 driver unit is 10mm in diameter, the bigger the unit the more powerful, therefor producing better bass.
The driver unit is basically a mini speaker that makes sound in the earbuds, its size determines the sound made by the earbuds.
JBL Tune Flex driver unit is 12mm in diameter,
making them have a larger driver unit than that of Devialet Gemini 2 by 2mm
, 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 indicate that they produce better quality sound.
Lowest Frequency
JBL Tune Flex
20Hz
Devialet Gemini 2 5Hz
Devialet Gemini 2's lowest frequency is at 5Hz, low-frequency response measures if and how well an audio component generates low frequencies that can be heard, and if it makes any changes to the signal on its way through.
JBL Tune Flex's lowest frequency is at 20Hz, this implies that
Devialet Gemini 2 produce a juicier bass than the JBL Tune Flex
Highest Frequency
JBL Tune Flex
20,000Hz
Devialet Gemini 2 20,000Hz
The Devialet Gemini 2's highest frequency is at 20,000Hz, high-frequency response shows how well a particular audio device produces high audible frequencies and if it makes any changes to the signal while at it.
JBL Tune Flex's highest frequency is at 20,000Hz, this means that
both devices can produce equal treble
Sound Pressure Level
JBL Tune Flex
108dB/mW
Devialet Gemini 2 120dB/mW
SPL, is the pressure level of sound, in decibels, dB, Devialet Gemini 2's measurement is 120dB/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 perceived differently by different people, so we need to have the means to get a standard measurement of sound level expressed in numerical terms.
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