Connect with us

Hi, what are you looking for?


JBL Pulse 4 Bluetooth Speaker Review: See Your Music

The JBL Pulse 4 portable wireless Bluetooth speaker sounds pretty good at higher volumes and has an entertaining lightshow effect built-in for parties.

JBL Pulse 4 Bluetooth Speaker with Lightshow

The Lightshow Wireless Speaker

Ever miss your childhood lava-lamps? Well miss them no more, as modern technology has found you a replacement. The JBL Pulse 4 is a portable Bluetooth speaker that boasts a 360-degree LED display stretching across its entire face. This effect may seem gimmicky, but JBL has, over four iterations, actually made it quite a nice addition to the device. And pretty lights are nice and all, but does the rest of the Pulse 4 hold up to its price tag?

You can buy the Pulse 4 on JBL’s site or Amazon for $250.

About My Preferences: Heads up, I’m a person! As such, these words are my opinion, and they are tinged by my personal preferences. While I try to mitigate this as much as possible during my review process, I’d be lying if I said my biases are completely erased. So for you, my readers, keep this in mind:

  • My ideal sound signature would be one with competent sub-bass, a textured mid-bass, a slightly warm midrange, and an extended treble.
  • I have mild treble sensitivity.

Source: The Pulse 4 was tested in the following configurations:

  • LG V40-> Bluetooth-> Speaker
  • Windows 10 PC -> Bluetooth -> Speaker
  • iPhone X -> Bluetooth → Speaker

All music was served as MP3 @320Kbps or as FLAC.

Tech Specs

  • Weight (lbs): 2.78
  • Battery capacity (mAh): 7,260
  • Charging time (hrs): 3.5
  • Bluetooth Version/Codec: 4.2/A2DP V1.3, AVRCP V1.6
  • Output power (W): 20
  • Music playing time (hrs): 12
  • Waterproofing: IPX7
JBL Pulse 4 Bluetooth Speaker Top View

Sound Signature

Sonic Overview:

The JBL Pulse 4 puts forth a very V-shaped sound signature. It has a boosted treble presence, recessed midrange, and profound lower register.

Sonic Breakdown:

Treble: Songs used: In One EarMidnight CityOutlandsSatisfyLittle OneShow Me How To Live (Live at the Quart Festival)

I find that many “360-degree” speakers struggle to maintain a present, but clear, treble. The Pulse 4 is no exception in this case, though it does perform better than some of its competitors that are socketed in at lower price brackets such as the UE Megaboom. The particular artifacts that are present with the Pulse 4 are somewhat similar to a mild-distortion, but are more accurately characterized as the treble “flattening out” at certain frequencies. This effect is less noticeable at higher volumes and when the Pulse 4 is in use in a large room. 

That aside, I never had any issues with my music sounding dull or washed-out. JBL ensured that consistent and pronounced upper-register presence is all but a guarantee. I was able to make out the breathing in the intro of In One Ear, albeit with a great degree of focus. Midnight City’s electric synths were well toned and avoided becoming sharp. The background effects of Little One were audible and somewhat airy. I was quite surprised at how lively the Show Me How To Live (Live at the Quart Festival) recording was through the Pulse. I wouldn’t have expected the Pulse 4 to do well with live recordings, but hey, I’ll take whatever wins I can get.

Midrange: Songs used: Flagpole SittaJacked UpI Am The HighwayDreamsToo CloseLittle Black Submarines

The Pulse 4’s midrange is recessed behind its treble and bass. This is somewhat offset by its spike near the 1–2KHz range that brings for the “main body” of many instruments as well as the majority of the resolution for vocals. Some subtle details are lost, sure, but this generally makes way for a more “impactful” and “fun” lower-midrange and bass. As this is not a speaker designed for entertaining, and not for audiophile-grade critical listening, I can’t fault JBL for going this route for tuning — especially when the execution is as good as it currently is.

Advertisement. Scroll to continue reading.

As far as my test songs go, I was surprised by just how much instrumental separation and texture make its way through the Pulse’s midrange recession. Flagpole Sitta sounded particularly good, as the Pulse’s weightier tuning nicely complemented the dry recording style of Harvey Danger. Jacked Up’s diverse instrumentation each retaining their respective tones, and while there was subtle smudging here and there, it was still very listenable.

Bass: Songs used: MothGold DustIn For The Kill (Skream Remix)War Pigs (Celldweller Remix)

Bass is the bread-and-butter of the Pulse 4. It’s clear that JBL put a lot of time and effort into making it work by the sheer power that the Pulse 4’s subwoofer has. This little speaker is capable of vibrating tables, desks, and even the floor of my balcony with ease. And while there’s plenty of bass quantity, the Pulse 4’s bass quality is respectable too.

The bass guitars of Moth were nicely bodied and toned. Gold Dust’s drops were sufficiently filthy, and In For The Kill’s tough-to-render bassline was neatly and powerfully staged. I am still impressed by the depth that the Pulse 4’s bass extends to. Its sub-bass presence is matched very well with its mid-bass, with no audible “gap” between the two. Similarly, the mid-bass blends in well with the lower-midrange. Tonally, the Pulse 4’s bass is on the wetter side which complements Electric and Dance genres very well.

Packaging / Unboxing

JBL Pulse 4 Bluetooth Speaker Packaging

The Pulse 4’s packaging is sufficiently protective, as it has a good amount of padding inside. It is minimally wasteful in terms of volume, which is nice, and its visually attractive and informative. I can’t complain.


JBL Pulse 4 Bluetooth Speaker with Lights Off

Construction Quality

JBL built the Pulse 4 very sturdily. It is considerably heavier than other speakers of a similar volume from other brands, mostly owing to the thick layer of transparent plastic coating all 360-degrees of the Pulse 4’s outer surface. This layer is what allows the led displays to shine through while the speaker is on.

JBL Pulse 4 Bluetooth Speaker Control Buttons

The top face of the Pulse 4 contains its woofer/tweeter hybrid transducer. I’d wager that its more tilted towards the woofer side though. On the top of the device you can also find the playback control buttons. They support raising the volume, lowering it, pausing playback, and resuming playback. Curiously, I was not able to skip/rewind on my Android or Windows device (iOS not tested).

JBL Pulse 4 Power and Bluetooth Buttons

On the other side of the top part of the Pulse 4 is the power button and the Bluetooth/pairing button. These buttons, unlike the ones mentioned above, and LED-backlit. All of the buttons are sufficiently tactile and are reasonably satisfying to press down. I did not have any issues with miss-presses.

The bottom face of the Pulse 4 contains its subwoofer. This is the part of the device that is responsible for producing bass. It does a good job, as I’ve mentioned, and this partially due to the fact that it is raised off the floor by the ridges that run along it. These are really well-engineered. They’re the right thickness to be sturdy, the right length to avoid blocking the bass and creating an echo-chamber, and the right height to avoid any contact with the floor.


Here’s a brief overview of the features that the Pulse 4 ships with:

  • Customized visualizer effect via app
  • True stereo playback when paired with a second Pulse 4
  • Gesture-controlled synchronization of the light show between Pulse 4 units

As far as I can tell, the Pulse 4 does not support NFC pairing, which is a bit of a bummer. That said, given the thick layering of plastic around the face of the device, and the speakers on the top and bottom, I’m not sure where they could sneak an NFC chip in that would work reliably. The rest of the features are nice pluses, and complement the already-good usability level of the Pulse 4. Thankfully the JBL app has improved since I last used it, as it was previously somewhat unreliable.



Inside the box you’ll find:

Advertisement. Scroll to continue reading.

  • 1x USB-A to USB-C cable

It may not seem like a lot, but hey, a speaker is a speaker. So long as I can charge it, I don’t care too much about accessories. The cable itself seems to be of a reasonable quality, so if you don’t own any other USB-C cables you probably won’t need to replace this one for a while.


The Pulse 4 is a great portable party speaker. It can get really loud, sounds pretty good at those higher volumes, and has an entertaining lightshow effect built in to it that is surprisingly well-executed. While it has some flaws in its treble that make it less-than-ideal for critical listening, it can serve the role for which it was designed quite well. It matches and exceeds the performance of many of its competitors, and with some reductions in weight and adjustments to the treble, it could easily stand at the top of its class.

As always, happy listening!

You May Also Like


Just how good is the $599 Q Acoustics M20 HD Wireless Speaker System? Does it make sense to spend more?


Popular headphone maker Cleer Audio branches out with the Crescent Wireless Speaker system. Find out if this system is the right solution for your...


The interest in vintage audio speakers has never been higher; especially as brands continue to refresh popular models that have been around for years.


Is the DALI Katch G2 the best Bluetooth Loudspeaker currently available below $500? It just might be.


At $129.95, the JBL Flip 6 offers up a slight upgrade over its previous generation line of very popular outdoor portable Bluetooth speakers.


If you have under $200 to spend a pair of powered desktop loudspeakers, the Edifier R1700BT are worth checking out.


Are you looking for an affordable portable Bluetooth loudspeaker that won't mind getting wet or taking a few bumps? The Tronsmart Bang is quite...


Our 2022 Buying Guide for the best affordable wireless speakers features some great options from KEF, PSB, Sonos, and more...


ecoustics is a hi-fi and music magazine offering product reviews, podcasts, news and advice for aspiring audiophiles, home theater enthusiasts and headphone hipsters. Read more

Copyright © 1999-2022 ecoustics | Disclaimer: We may earn a commission when you buy through links on our site.