Has Active Noise Cancellation (Noise Control)
Sony WF 1000XM4
✓
JBL Tune Flex ✓
Active noise cancellation uses more advanced kind of tech to actively cancel noise. ANC works when, it studies the sound pattern of incoming noise and generates a mirror signal to cancel it out. Simply put, it's like taking +1 (sound from your surrounding) and adding -1 (counter sound by the device) giving zero resulting in a reduced level of noise.
The JBL Tune Flex have Active Noise Cancellation enabling you to listen at lower volume levels, good for your ears as you don't have to crank up the earbuds volume to overcome background sounds.
Sony WF 1000XM4 too have ANC making both earbuds ideal for flights and morning travels. The JBL Tune Flex and Sony WF 1000XM4 work with different noise cancellation types, pick the setting that you prefer for travel or that suites your chill time.
Has Passive Noise Reduction
Sony WF 1000XM4
✓
JBL Tune Flex ✓
JBL Tune Flex stay tightly in place, creating a sound seal that reduces background sounds and also prevents the device sound from leaking out at the same.
Both of these devices have passive noise reduction this means that they limit ambient noise instead of actively using technology to cancel it out.
Driver Unit Size
Sony WF 1000XM4
6mm
JBL Tune Flex 12mm
The JBL Tune Flex have a unit size of 12mm 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 device, its size dictates the sound produced by the earbuds.
Sony WF 1000XM4 driver unit is 6mm in diameter,
which means that they have a smaller driver unit than that of JBL Tune Flex by 6mm
, 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 yeah, larger drivers can generate louder sound, but this does not indicate that they produce better quality sound.
Lowest Frequency
Sony WF 1000XM4
20Hz
JBL Tune Flex 20Hz
The JBL Tune Flex's lowest frequency is at 20Hz, low-frequency response measures if and how well an audio device produces low frequencies that can be heard, and if it makes any changes to the signal on its way through.
Sony WF 1000XM4's lowest frequency is at 20Hz, this implies that
both devices can make sound with equal bass
Highest Frequency
Sony WF 1000XM4
40,000Hz
JBL Tune Flex 20,000Hz
JBL Tune Flex's highest frequency is at 20,000Hz, high-frequency response shows how well an audio component produces high recognizable frequencies and if it changes to the signal while at it.
Sony WF 1000XM4's highest frequency is at 40,000Hz, this implies that
Sony WF 1000XM4 can produce a clearer and crispier treble than the JBL Tune Flex
Sound Pressure Level
Sony WF 1000XM4
105dB/mW
JBL Tune Flex 108dB/mW
The sound pressure level, is the level of pressure of sound, in decibels, dB, JBL Tune Flex's measurement is 108dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
Sony WF 1000XM4's sound pressure level measurement is 105dB/mW. The sound pressure level, something is can be considered differently by different persons, so we need to have a way of getting an objective measurement of sound level expressed in numerical terms.
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