JBL Xtreme 4 vs onn Portable FM Boombox

Last updated: August 13, 2026

Short answer: the onn Portable FM Boombox. It ranks #23 of 77 large speakers by sound quality at $74.83; the JBL Xtreme 4 ranks #37 and costs $380, so there is not much of a tradeoff to weigh.

The case for the JBL Xtreme 4: A removable battery, slightly deeper bass than the Xtreme 3, and a custom EQ available online for the best sound quality. The catch: it’s expensive, carries some bass boost, has a dip between the upper bass and midrange that gives it a strange character no EQ can fix, and gets some upper-mids and treble boost at high volume.

What the onn Portable FM Boombox gets right: Exceptional value, reasonably deep bass (though not quite up to the JBL Xtreme 3, Soundcore Boom 2, or Tribit Stormbox Lava), an IPX7 rating that lets it float, FM radio with 10 presets, six multicolor LED lighting effects, and the flexibility to run on battery or corded power. Set against that: its frequency response isn’t quite as smooth as the top-ranked speakers in its size class, and there’s no custom EQ.

Buy the onn Portable FM Boombox. It ranks higher for sound quality than the JBL Xtreme 4 and costs less, so there is no real case for the other one.

If battery life is a priority, the JBL Xtreme 4 is rated for 24 hours versus 16 hours for the onn Portable FM Boombox.

JBL Xtreme 4 vs onn Portable FM Boombox

Specifications Side By Side

JBL Xtreme 4 onn Portable FM Boombox
Price$380$74.83
Ranked#37 of 77 in Large Size Portable Bluetooth Speakers#23 of 77 in Large Size Portable Bluetooth Speakers
AppYesNo
Aux InputNoYes
Battery Life24 hours (Manufacturer specified)16 hours (Manufacturer specified)
EQYes (5 band)No
IP RatingIP67IPX7
Bluetooth Latency220ms-
Max Volume106dB-
Party ModeYes (Auracast)Yes (Party Sync, pairs with 1 other onn. speaker)
Power BankYes (USB-C)Yes (USB-A)
Power InputUSB-CUSB-C
Removable BatteryYesNo
TWSYesYes
Weight4.6 lbs / 2.1 kg4.9 lbs / 2.22 kg
Bluetooth CodecsSBC-
Built in MicrophoneYesYes
StereoYes-
Bluetooth Version5.3-
Dimensions11.7" x 5.9" x 5.6" (297 x 149 x 141 mm)13.8" x 5.9" x 7.7" (350 x 149 x 195 mm)
Drivers2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators2 speakers
Frequency Response44Hz - 20kHz (Manufacturer specified)-
Output Power100W25W RMS (100W peak)
Digital Aux InputNoNo
FM Tuner-Yes (10 presets)
Discontinued-No

The Two Speakers In Full

JBL Xtreme 4: $380 Amazon Bhphotovideo

JBL Xtreme 4 ranking card

Pros: Removable battery. Slightly deeper bass than Xtreme 3. Use this EQ for the best sound quality.

Cons: High priced. Some bass boost. Dip in the upper bass to midrange makes it sound strange which cannot be EQd out. Some upper mids and treble boost at high levels.

AppYes
Aux InputNo
Battery Life24 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Latency220ms
Bluetooth Version5.3
Built in MicrophoneYes
Digital Aux InputNo
Dimensions11.7" x 5.9" x 5.6" (297 x 149 x 141 mm)
Drivers2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators
EQYes (5 band)
Frequency Response44Hz - 20kHz (Manufacturer specified)
IP RatingIP67
Max Volume106dB
Output Power100W
Party ModeYes (Auracast)
Power BankYes (USB-C)
Power InputUSB-C
Removable BatteryYes
StereoYes
TWSYes
Weight4.6 lbs / 2.1 kg

As an eBay Partner, we may be compensated if you make a purchase.

onn Portable FM Boombox: $74.83 Walmart

onn Portable FM Boombox ranking card

Pros: Extremely good value. Reasonably deep bass, though not as deep as something like the JBL Xtreme 3, Soundcore Boom 2, or Tribit Stormbox Lava. IPX7 waterproof and floats. FM radio with 10 presets. 6 multicolor LED lighting effects. Can run on battery or corded power.

Cons: Reasonable frequency response, but not quite as smooth as some of the top-ranked speakers in this size. No custom EQ.

AppNo
Aux InputYes
Battery Life16 hours (Manufacturer specified)
Built in MicrophoneYes
Digital Aux InputNo
Dimensions13.8" x 5.9" x 7.7" (350 x 149 x 195 mm)
DiscontinuedNo
Drivers2 speakers
EQNo
FM TunerYes (10 presets)
IP RatingIPX7
Output Power25W RMS (100W peak)
Party ModeYes (Party Sync, pairs with 1 other onn. speaker)
Power BankYes (USB-A)
Power InputUSB-C
Removable BatteryNo
TWSYes
Weight4.9 lbs / 2.22 kg

As an eBay Partner, we may be compensated if you make a purchase.