Home Wireless Earbuds Devialet Gemini 2 Vs. Jbl Tune Flex

Devialet Gemini 2 Vs. Jbl Tune Flex Review

Last updated on Mar 30, 2024   7 minute read
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JBL Tune Flex

JBL Tune Flex

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Reasons why you might like the JBL Tune Flex

Overall Score 7.5 Represents average audio ecosystem compatibility score.

  • Ingress Protection (Ip) Rating of IPX4
  • Has Active Noise Cancellation (Noise Control)
  • Battery Life of 8 hours
  • Has Usb Type-C
  • Number Of Microphones of 4 only
  • Has Ambient Sound Mode
VS
Devialet Gemini 2

Devialet Gemini 2

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Reasons why you might like the Devialet Gemini 2

Overall Score 7.3 Represents average audio ecosystem compatibility score.

  • Ingress Protection (Ip) Rating of IPX4
  • Has Active Noise Cancellation (Noise Control)
  • Battery Life of 5 hours
  • Has Usb Type-C
  • Number Of Microphones of 4 only
  • Has Ambient Sound Mode

Devialet Gemini 2 Vs. Jbl Tune Flex Review In Summary

Category Features JBL Tune Flex Devialet Gemini 2
DESIGN ingress protection (ip) rating IPX4 IPX4
weight 9.6g 12g
has no wires or cables
sweat resistance
has stereo speakers
SOUND QUALITY has active noise cancellation (noise control)
has passive noise reduction
driver unit size 12mm 10mm
lowest frequency 20Hz 5Hz
highest frequency 20,000Hz 20,000Hz
sound pressure level 108dB/mW 120dB/mW
POWER battery life 8hours 5hours
battery life of charging case 24hours 17hours
charge time 2hours 1hours
has wireless charging
has a battery level indicator
CONNECTIVITY has usb type-c
bluetooth version v5.2 v5.2
maximum bluetooth range 10meters 10meters
has aac
has aptx adaptive
MICROPHONE number of microphones 4only 4only
has a noise-canceling microphone
mic sensitivity -38dBV/Pa
EXTRAS has ambient sound mode
has find earbuds feature
supports fast charging
multipoint count 2only 2only
has a mute function
control panel placed on a device
has voice prompts
travel bag is included
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Devialet Gemini 2 Vs. Jbl Tune Flex Review In Detail

Design

Ingress Protection (Ip) Rating

JBL Tune Flex IPX4
Devialet Gemini 2 IPX4

IP ratings refer to the level of protection offered by an enclosure, against solids and water. In the format of IPXX, 'X' represents a number The first value of the IP rating means protection against solids say dust, while the second refers to protection against liquids (sweat).

Having a value of IPX4, the Devialet Gemini 2's rating is read as, the first value of X denotes that no data available to specify a protection rating, and of liquids that they can withstand low pressure spray similar to that of a shower head when tilted at 180° for 10 minutes.

In comparison to the Devialet Gemini 2, JBL Tune Flex have a rating of IPX4 meaning that we are not yet certain of their rating with solids (dust) and that of liquids is that, they both have the same rating against liquids

Weight

JBL Tune Flex 9.6g
Devialet Gemini 2 12g

The Devialet Gemini 2 have a weight of 12g . We consider a lower weight best because lighter devices are easier to transport.

The JBL Tune Flex, at 9.6g are lighter than the Devialet Gemini 2 with a difference -2.4g

Has No Wires Or Cables

JBL Tune Flex
Devialet Gemini 2

For a device to be true wireless it should have no wires connecting any part of the device together, Devialet Gemini 2 are true wireless for this matter since they have no wires. This is a major distinction as some wireless earbuds have wires connecting the pair of earbuds .

JBL Tune Flex also is true wireless because it has no cables linking the two earbuds .

Sweat Resistance

JBL Tune Flex
Devialet Gemini 2

Devialet Gemini 2 are resistant to sweat

JBL Tune Flex's resistance to sweat makes both devices good for use during long-distance running, marathons, training in workout bodysuits, etc

Has Stereo Speakers

JBL Tune Flex
Devialet Gemini 2

Devialet Gemini 2 have stereo speakers, devices with stereo speakers deliver sound from independent channels on both left and right sides, this creates a richer sound and a better listening experience.

The JBL Tune Flex also have stereo speakers

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Sound Quality

Has Active Noise Cancellation (Noise Control)

JBL Tune Flex
Devialet Gemini 2

ANC uses advanced kind of tech to reduce unwanted ambient sounds. ANC works when, it detects and analyzes the sound pattern outside and inside the earbud and then inverts the soundwaves to cancel it out. In simple terms, it's like having +1 (noise) and producing -1 (inverted noise) to make zero thus "diluting" the noise.

The Devialet Gemini 2 have ANC allowing you to listen at lower levels of volume, causing less ear fatigue as you don't have to crank up the device volume to outcompete background sounds.

JBL Tune Flex too have Active Noise Cancellation which makes both earbuds ideal for plane rides and morning commutes. Each operate with different noise cancellation settings, pick the mode that suits your commute or that enhances your chill time.

Has Passive Noise Reduction

JBL Tune Flex
Devialet Gemini 2

The Devialet Gemini 2 stay well in place, creating a sound covering that tones down your environment sounds and also prevents the device voice audio from leaking out .

Both of these devices have passive noise reduction which means that they reduce ambient noise instead of actively using technology to cancel it out.

Driver Unit Size

JBL Tune Flex 12mm
Devialet Gemini 2 10mm

Devialet Gemini 2 driver unit is 10mm in diameter, bigger drivers are more powerful, and can produce better bass. A driver unit is basically a mini speaker that produces sound in the device, 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 , a common assumption that driver units of a bigger size automatically produce better sound quality.

However, large drivers usually have difficulty producing high frequencies so yes, 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

The Devialet Gemini 2's lowest frequency is at 5Hz, low-frequency response measures if and how well an audio component produces 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 Devialet Gemini 2 can produce a juicier bass than the JBL Tune Flex

Highest Frequency

JBL Tune Flex 20,000Hz
Devialet Gemini 2 20,000Hz

Devialet Gemini 2's highest frequency is at 20,000Hz, high-frequency response tells how well an audio device makes high recognizable frequencies and if it adjustments to the signal on its way through.

JBL Tune Flex's highest frequency is at 20,000Hz, this means that both devices can generate 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 separate people, so we need to have a way of getting an objective measurement of sound level expressed in numerical terms.

Power

Battery Life

JBL Tune Flex 8hours
Devialet Gemini 2 5hours

The Devialet Gemini 2's battery life is 5 hours, these last less than 5 hours of listening which is considered average before recharge. A device's battery life is given by the manufacturer, and with longer battery life, you get to use it for longer and requires fewer chargings.

JBL Tune Flex's battery life is more than that of Devialet Gemini 2 by 3 hours . Each time you recharge your device, they get a little less listening time. The effect is barely noticeable at first, but over time, your wireless earbuds will have shorter listening time.

Battery Life Of Charging Case

JBL Tune Flex 24hours
Devialet Gemini 2 17hours

The battery life of the charging case is given by the manufacturer, and Devialet Gemini 2's case has a full charge of 17 hours. A charging case with more battery hours allows you to recharge your earbuds on the go many times before having to recharge the case itself.

JBL Tune Flex's charging case has a battery life of 24 hours, more than that of Devialet Gemini 2 by 7 hours

Charge Time

JBL Tune Flex 2hours
Devialet Gemini 2 1hours

It takes 1 hours to fully charge the Devialet Gemini 2's battery. It is recommended to fully charge the battery before using the earbuds when they have been in storage for extended periods.

JBL Tune Flex takes 2 hours to fully charge the battery, more than that of Devialet Gemini 2 by 1 hours

Has Wireless Charging

JBL Tune Flex
Devialet Gemini 2

The Devialet Gemini 2, the device supports wireless charging. To charge the earbuds, you simply place down on a supported charging pad.

Has A Battery Level Indicator

JBL Tune Flex
Devialet Gemini 2

Devialet Gemini 2 have a battery level indicator, an indicator notifies you when the earbuds has a low battery. The battery indicator lights display the charging status of your device and charging case.

JBL Tune Flex too have a battery level indicator, these allow you to determine the charging state of your device, if charged fully, or having a low battery.

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Connectivity

Has Usb Type-C

JBL Tune Flex
Devialet Gemini 2

The Devialet Gemini 2 have USB TYPE-C, an industry-standard connector for transmitting both data and power in a single cable.

JBL Tune Flex too use USB TYPE-C. This USB-C plug comes along with most current electronics.

Bluetooth Version

JBL Tune Flex v5.2
Devialet Gemini 2 v5.2

The Devialet Gemini 2 have Bluetooth version of 5.2, Bluetooth is a wireless technology standard that enables data movement between devices placed in range, using short-wavelength, ultra-high frequency radio waves.

JBL Tune Flex has a Bluetooth version of 5.2, equal to that of the Devialet Gemini 2 . Newer versions provide faster data transfers.

Maximum Bluetooth Range

JBL Tune Flex 10meters
Devialet Gemini 2 10meters

The Devialet Gemini 2 have a 10meters distance to connect via Bluetooth.

JBL Tune Flex have a maximum range of 10meters, equal to that of the Devialet Gemini 2

Has Aac

JBL Tune Flex
Devialet Gemini 2

Devialet Gemini 2 support AAC, a codec used for Bluetooth audio. It supports 24-bit audio at 250kbps. Since it uses psychoacoustic modeling, it provides better results than other codecs at the same bit rate.

Since its the highest quality codec that any Bluetooth-supporting Apple product supports, the Devialet Gemini 2 will work fine with your iPhone. If you intend on using these with Android , ensure that they also support aptX HD, LDAC, or LHDC as well.

The JBL Tune Flex support AAC as well. Designed to be the successor of the MP3 format, AAC generally achieves higher sound quality than MP3 encoders at the same bit rate.

Has Aptx Adaptive

JBL Tune Flex
Devialet Gemini 2

The Devialet Gemini 2 support APTX Adaptive, an audio codec for Bluetooth devices that are developed by Qualcomm. It has a variable bit rate (between 279kbps and 420kbps).

Microphone

Number Of Microphones

JBL Tune Flex 4only
Devialet Gemini 2 4only

Devialet Gemini 2 have 4 microphones.

JBL Tune Flex microphones are 4, equal to that of the Devialet Gemini 2 . More microphones record better sound quality and help the earbuds to filter out noise.

Has A Noise-Canceling Microphone

JBL Tune Flex
Devialet Gemini 2

Devialet Gemini 2 use a noise-canceling type of microphone, these microphones are made to reduce background sounds from the earbuds' sound.

The JBL Tune Flex too use a noise-canceling microphone. Especially useful in noisy areas.

Mic Sensitivity

JBL Tune Flex -38dBV/Pa
Devialet Gemini 2

The JBL Tune Flex microphone sensitivity is measured at -38dBV/Pa. The magnitude of the analog or digital output signal from the microphone with its input stimulus is a measure of its sensitivity. It's the 'loudness' of the sound that the microphone can pick up.

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Extras

Has Ambient Sound Mode

JBL Tune Flex
Devialet Gemini 2

Devialet Gemini 2 support ambient sound mode, which uses microphones to channel ambient sound so that they can still be heard even when wearing the earbuds

The JBL Tune Flex support ambient sound mode as well, helpful when you want to listen to music while being aware of your surrounding, say you’re having a jog but still want to be able to hear traffic.

Has Find Earbuds Feature

JBL Tune Flex
Devialet Gemini 2

If lost in a room, or can't be found in your bag, the JBL Tune Flex support the find earbuds feature.

Supports Fast Charging

JBL Tune Flex
Devialet Gemini 2

The Devialet Gemini 2 support fast charging. Most often, technologies like MediaTek’s Pump Express, are used to reduce the time it takes to fully charge a device.

The JBL Tune Flex too support fast charging. This kind is similar to regular charging, just that the battery is filling up much faster. Say, with Quick Charge 3.0, the battery is charged to 50% in 30 minutes.

Multipoint Count

JBL Tune Flex 2only
Devialet Gemini 2 2only

The Devialet Gemini 2 support multipoint of 2 connections, the multipoint feature allows you to link to more than one Bluetooth device and switch between them. For example, you can switch calls from one device to another without having to manually disconnect and reconnect.

The JBL Tune Flex support multipoint count of 2, equal to that of the Devialet Gemini 2 . Bluetooth multipoint is useful because you can be on one call and not miss notifications coming from another device.

Has A Mute Function

JBL Tune Flex
Devialet Gemini 2

The Devialet Gemini 2 have a mute function, they have the option to mute/unmute a conversation directly from the device.

The JBL Tune Flex also support the mute function. It means that you unilaterally turn off the device's microphone, but you can still hear the other party's voice.

Control Panel Placed On A Device

JBL Tune Flex
Devialet Gemini 2

The Devialet Gemini 2, so you can easily access the volume control, pause, play, mute, etc whichever functions are supported on the device.

JBL Tune Flex also have a control panel on them.

Has Voice Prompts

JBL Tune Flex
Devialet Gemini 2

The JBL Tune Flex support voice prompts. Automatically receive information through audio messages, like if there is a problem with the connection.

Travel Bag Is Included

JBL Tune Flex
Devialet Gemini 2

The Devialet Gemini 2 come with a special case. Carrying earbuds without a case, or putting them in your pockets without a cover may easily damage them.

JBL Tune Flex too have a travel bag included, which offers safe transportation.