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Comparing JBL Flip 4 and Sony SRS-XB21

Lowest price found: $77.55
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  • Wirelessly connect up to 2 smartphones or tablets to the speaker and take turns playing impressive stereo sound
  • Built-in 3000mAh rechargeable li-ion battery Supports up to 12 hours of playtime
  • Ipx7 waterproof means no more worrying about rain or spills; you can even submerge flip 4 in water
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Lowest price found: $98
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  • Feel the power of extra bass with live sound mode for an immersive 3D sound experience
  • Waterproof and Dustproof IP67 design for worry-free usage
  • Add a splash of Colored light with a single-colored line light
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Consumer Score
Avg. customer reviews:
4.6 Read reviews
In comparison:
JBL Flip 4 ranks #21 out of 281. It is in the top 10%.
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9.3
Amazing
Popularity Score
Best-selling
Popularity rank: 4 / 322
99%
Consumer Score
Avg. customer reviews:
4.4 Read reviews
In comparison:
Sony SRS-XB21 ranks #122 out of 281. It is in the top 20%.
Go to rankings
8.2
Great
Popularity Score
Somewhat popular
Popularity rank: 188 / 322
45%
Consumer score distribution.
JBL Flip 4 ranks #21 and Sony SRS-XB21 ranks #122

Customers like JBL Flip 4 noticeably more

JBL Flip 4, the cheaper option, tends to get more favorable reviews than Sony SRS-XB21 [ 4.6 vs 4.4 ]. In our awesomeness score JBL Flip 4 ranks #18 out of 322 and Sony SRS-XB21 ranks #165 out of 322.

Go to awesomeness ranking Go to consumer score ranking

JBL Flip 4 is more popular

It's fairly safe to say that JBL Flip 4 is a more popular bluetooth speaker, based on its 30,000+ reviews. In our popularity score JBL Flip 4 ranks #3 out of 322 and Sony SRS-XB21 ranks #187 out of 322.

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To consider

Customers who view JBL Flip 4 and Sony SRS-XB21 often consider Bose SoundLink Micro, a pricier option with better reviews.
Table: Top compared alternatives for JBL Flip 4 and Sony SRS-XB21
Bose SoundLink Micro $79
Avg. customer reviews:
4.8 Read reviews
In comparison:
Bose SoundLink Micro ranks #1 out of 281. It is in the top 10%.
Go to rankings
9.9
Amazing
Best-selling
Popularity rank: 9 / 322
98%
Better Reviews
JBL Flip 4 $78
Avg. customer reviews:
4.6 Read reviews
In comparison:
JBL Flip 4 ranks #21 out of 281. It is in the top 10%.
Go to rankings
9.3
Amazing
Best-selling
Popularity rank: 4 / 322
99%
W-KING D8 $76
Avg. customer reviews:
4.6 Read reviews
In comparison:
W-KING D8 ranks #25 out of 281. It is in the top 10%.
Go to rankings
9.3
Amazing
Cheaper
Bugani M83 $70
Avg. customer reviews:
4.7 Read reviews
In comparison:
Bugani M83 ranks #8 out of 281. It is in the top 10%.
Go to rankings
9.6
Amazing
Very popular
Popularity rank: 53 / 322
85%
Cheaper Better Reviews
Find the best bluetooth speaker in Bluetooth Speaker Finder
Professional Reviews and Opinions
JBL Flip 4 Bluetooth Speaker - REVIEW
Crazy popular! 1.0M views!
Play video review
JBL Flip 4 REVIEW! Best Bluetooth Speaker 2018?
Very popular! 244K views!
Play video review
JBL Flip 4 Bluetooth Speaker In-depth Review
Popular! 49K views!
Play video review
We couldn't find any video reviews for Sony SRS-XB21 yet
Physical Features
Color Mouse over a color for a picture
White
Red
Teal
Blue
Trio
Gray
Ocean blue
Camouflage
Black
Red
Blue
Black
Dimensions
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Weight

1.1 lbs
 

2.5 lbs
 
Water Resistance

Speakers range from not being able to handle even a drop of water to being able to be fully submerged in water for several minutes. Do you plan to take your speaker outside? To the beach? To the pool? In the shower? Then you definitely need to verify the level of water resistance before purchasing. You can tell the water resistance by the IP rating—the higher the rating, the more resistant the speaker is to the elements. For reference, the first digit refers to dust protection and the second digit refers to water protection. It reads as: IP68. Anything higher than IP66 will be dust- and splash-proof, meaning it can handle some contact with water, but cannot be fully submerged or soaked.

Water Resistant IPX rating if applicable
IPX7 - Immersion up to 1m
IP67 - Dustproof and can withstand being submerged in 1m
Dustproof Dust is a difficult element to combat, since it accumulates naturally and you have very little control over its ability to clog up your speaker. Dust and electronics just don’t get along very well. A ... Show more
No
Yes
Rugged Design Bluetooth speakers can be durable, rugged, shockproof, dustproof, armored, splash-proof, water resistant and waterproof - all of which can be overwhelming and confusing. In order for a speaker to be c ... Show more
Yes
Yes
Battery

Battery life for Bluetooth speakers is measured in milliampere hours (mAh). Manufacturers will report the battery life of a speaker in the average number of hours it takes to empty from a full charge. Keep in mind this number is based on medium levels of usage. If you play the speaker on full volume, it will drain the battery faster. Some specialty features like using the speaker to charge your phone or casting an LED light show will also drain the battery faster. The manufacturer reported number is just an estimate, and may be slightly different based on your usage.

It’s also important to consider is the type of battery. Rechargeable lithium-ion (LI-ion) batters are ideal, but some speakers only take standard or rechargeable AA/AAA/C/D batteries. You may even find Bluetooth speakers that recharge via solar power—great for outdoor use!

Battery Life
12 hours
24 hours
Charging Time How long it takes to charge the battery
3.5 hours
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battery_charging_full Power Bank This refers to the speaker’s ability to act as a charging station for your device. In addition to input power (which charges the speaker), some speakers also come with output power, meaning it can cha ... Show more
No
No
Sound Quality
speaker_group Sound System A speaker’s sound system is described as either mono or stereo. Mono speakers play audio from a single channel, giving the impression that the sound is coming from one direction. Stereo uses two or mo ... Show more
Stereo
Stereo
speaker_group Number of Drivers To understand the inner-workings of a Bluetooth speaker, look first at the number and type of drivers. Drivers are the cones or horn-shaped objects inside the speaker box. The number of drivers tells ... Show more
2
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wifi_tethering Subwoofer Having a separate speaker driver dedicated to the lower frequency tones gives your speaker a more robust, rounded out sound. It allows the other drivers to focus on the sounds that they’re best equipp ... Show more
No
No
Speaker Breakdown Use the speaker breakdown to better understand sound quality based on the makeup of the speaker. Manufacturers will often report additional details on the speaker drivers, such as the shape (cone or d ... Show more
Two 40mm transducers
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Total Output Power Also known as “power handling,” a speaker’s total output power is recorded in wattage. A watt is a measure of electrical power. Thus, higher output means more powerful (or louder) speakers. When deter ... Show more
16 watts
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graphic_eq Frequency Range Measured in Hertz (Hz), frequency response range describes how high and low a speaker can play. The larger the range, the better the speaker will be at reproducing the audio being played. As a frame o ... Show more
70Hz – 20kHz
20 Hz–20,000 Hz
wifi_tethering Connectivity
Bluetooth Range If you can find it, you should always check the Bluetooth range of your speaker. You won’t realize it isn’t long enough until it stops working for you! Bluetooth range is important for a couple of rea ... Show more
33 ft
33 ft
Hands-Free Function If you plan on using your speaker to make and take calls, it needs to come equipped with a built-in microphone and speakerphone. To make a call, you can use voice-activated dialing or key in the numbe ... Show more
Yes
Yes
device_hub Connects to Multiple Devices In most cases, your Bluetooth speaker will connect to one device at a time and your device will connect to one Bluetooth speaker at a time. Some speakers come equipped with a feature that allows you t ... Show more
Yes
No
settings_input_composite Aux Cable Port While Bluetooth is a quick and easy way to connect your device to a speaker, at times you may want to use a hardwired connection instead. You would do this through a 3.5mm headphone or auxiliary jack. ... Show more
Yes
Yes
phonelink_ring Remote / App Control Apart from the controls on the speaker itself, some Bluetooth speakers may come with a remote to turn the speaker on or off, activate Bluetooth scanning, turn volume up or down, or respond to calls. I ... Show more
No
No
speaker_group Connects to Other Speakers Generally speaking, Bluetooth speakers aren’t usually meant to connect to other Bluetooth speakers unless they come equipped with a hub or transmitter. In those situations, your device connects to the ... Show more
No
Yes
nfc NFC Near Field Communication (NFC) is a new technology that allows you to connect devices by simple tapping them together. To use it, your device (phone, tablet, computer, etc.) and your speaker must have ... Show more
No
Yes
AirPlay AirPlay is a feature for Apple products that offers another way to connect your devices to Bluetooth speakers. The speaker must come equipped with AirPlay in order for you to connect your Apple device ... Show more
No
No
radio FM Radio
No
No
Additional Features
Additional Features Any other features that make this device unique
no data Know this info? Contribute!
Easy button control
Accessories Chargers, cables, cases that come with the device
Micro USB Cable
USB Cable
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Key features
  • Wireless Bluetooth Streaming
  • 12 hours of playtime
  • IPX7 Waterproof

JBL Flip 4 is a very popular and one of the more expensive options. It's in the top 3 bestselling bluetooth speakers and has dozens of popular alternatives in the same price range, such as Alpatronix AX500 or Bose SoundLink Micro .

JBL Flip 4 was released in 2018. There are a lot of newer bluetooth speakers on the market. Show newer Bluetooth Speakers

JBL Flip 4 is $20.10 more expensive than an average bluetooth speaker ($57.99).

Key features
  • 24-hour battery life
  • Connect and add more speakers up to 100
  • IP67 rating (waterproof & dustproof)
  • Bluetooth/NFC compatible

Sony SRS-XB21 is a well-known option on the higher end of the price range. It's in the top 3 bestselling bluetooth speakers and has dozens of popular alternatives in the same price range, such as Ion Audio Tailgater Express or Mobility MB-BTSPKR .

Sony SRS-XB21 was released in 2018. There are dozens of newer bluetooth speakers on the market. Show newer Bluetooth Speakers

Sony SRS-XB21 is $21.96 more expensive than the average bluetooth speaker ($57.99).

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