JBL 104-BT Compact Desktop Reference Monitors review: great, but not for their intended purpose

JBL 104-BT: Two-minute review

The JBL 104-BT are great speakers if you get them for the right reason. If you’re looking for the best computer speakers for general use, you’ll be very happy with these, thanks to a warm-leaning yet full frequency range that lends itself well to music listening as well as gaming and streaming (as long as you don’t need any real sub-bass).

They’re not quite as immersive as the best gaming headsets, but they’re more than immersive enough. However, reference monitors they are not.

If you’re trying to put together a home studio, you want monitors that give you an accurate representation of what you’re working on. If you have speakers that have somewhat of a boost in the low-mids as these do, then when you go to listen to your music on other speakers or headphones, you’ll realize that you compensated for that boosted area and have a track that’s lacking in that same frequency range.

Keep that in mind when going through this review as these are very enjoyable to listen to, are relatively affordable, and come with the appropriate amount of features (minus one or two). That’s why you should consider them – not for music production.

JBL 104-BT: Price and availability

•  How much does it cost? $149.00 / £199.99 / AU$289.00 
•  When is it available? Available now 
•  Where can you get it? Available in the US, UK and Australia 

The JBL 104-BT aren’t the cheapest computer speakers out there, but they’re pretty affordable at $149.00 / £199.99 / AU$289.00. Considering the sound quality, that’s pretty good value as well. Of course, for that price, the JBL 104-BT should include a sub out at the very least.

As far as alternatives go, the Edifier MR4 are worth a consideration. They go for slightly less at $129.99 / £109.99 / AU$179.99, and they actually work a bit better for reference speakers, but also miss out on that low-end.

If you’re looking for a pair of computer speakers for reference work, the Vigilant Audio SwitchOne I reviewed back in 2022 are still a fantastic option, since they use passive radiators on the side to fill out that low end. Of course, they retail for a bit more at $249 (£255 / AU$471).

If you want a subwoofer and are willing to spend a bit more, however, the Kanto Ora, with a price tag of $349.99 / AU$699.95 (about £287), are really, really good. They work fairly well as reference speakers as well, though they have a slightly scooped mid-range. 

JBL 104-BT: Specs

JBL 104-BT: Design

Before we dig in much more about why they’re good for certain things and not for others, let’s discuss the JBL 104-BT’s design. These speakers come in either a matte black or matte white colorway, with the one I received for testing coming in black.

They stand at a little under ten inches tall and six inches wide (they have a depth of almost five inches), which is fairly diminutive for a pair of speakers. Sure, you can find smaller, but they’re probably going to have a thinner or brighter sound.

They both contain a 4.5-inch driver and a 0.75-inch soft dome driver for the highs, though I can only see the larger one through the front grille. Both speaker boxes are ported on the back as well to improve bass response.

Since these are powered speakers, one of them is a little heavier at 4.54 lbs compared to the other’s weight of 3.81 lbs. While they connect to each other with basic red and black speaker wires, the one with the power amp also allows ⅛-inch aux, RCA, and TRS balanced inputs, not to mention Bluetooth connectivity.

While most of the inputs are on the back, the aux input is on the front along with a headphone out and the controls, including a backlit volume knob and an input selector. There’s also an LED indicator when you have something connected via Bluetooth.

Unfortunately, there’s no sub out – a fateful omission as we’ll discuss later. And, though far from a deal breaker, there’s no physical digital connectivity like USB. Considering the digital-to-audio converters, or DACs, that come in computers and laptops vary quite a bit, it would have been a nice inclusion.

JBL 104-BT: Performance

As far as the sound quality goes, it’s worth repeating that these are solid sounding speakers that are pleasing to listen to, but are not appropriate for music production work, podcasters possibly notwithstanding.

Since there’s no subwoofer or sub out, you’re limited on the low end. The JBL 104-BT only goes down to 60Hz (a low note on a standard bass is 41Hz for reference). This means that anything that needs that low end to really come alive – hip hop, EDM, or games and movies with massive amounts of explosions – are going to feel a bit truncated. That doesn’t mean you won’t feel some of the impact of those 808 drums or the rumble of whatever’s happening in the latest Nolan movie. You just won’t feel all of it.

That said, there’s a boost in the low-mids to compensate for that. This boost is probably the biggest deterrent for using these speakers as reference monitors. However, it adds a richness and fullness to any audio that also makes these speakers very pleasing to listen to. There’s also plenty of punch and immediacy to what you’re hearing, so that while you won’t feel your bones shaking from subwoofer-level rumble, there’s still a visceral element to the sound.

The rest of the mids sit nicely in the mix, while the high-end is present in a pleasing way. The high-end isn’t too sharp and it isn’t too muted either.

Where I’m actually most impressed with the JBL 104-BT is its sound imaging, and by extension, the soundstage. The soundstage with speakers are all about placement so you can affect how wide something sounds just by how far apart the speakers are. Still, these speakers did a good job of making you feel that separation of audio elements that are only on the left or right side, not to mention moving around.

However, what really jumped out at me was the center channel. The JBL 104-BT is a stereo speaker system with just two speaker boxes. But, with every stereo speaker system, you really have the left, the right, and the center, even if it’s not represented by its own physical speaker.

Good speakers, along with good speaker placement, are able to make that center audio – usually dialogue or vocals – sound like it’s floating right in front of you instead of sounding like part of it is coming from one speaker and part of it is coming from the other.

With the JBL 104-BT, that center channel felt like it was right in front of me to the point that I kept checking the speakers on the laptop to make sure they weren’t also getting in on the action (they weren’t).

Considering these retail for around $150, what you’re getting is pretty remarkable as long as you use them to elevate your everyday audio experience. If you’re using them for music production, you’ll probably like the way they sound, minus that low-end, but you’re going to have a hard time creating music that sounds good on other systems. If you keep that in mind, these are an easy pair of speakers to recommend.

Should I buy JBL 104-BT Compact Desktop Reference Monitors?

Buy it if…

Don’t buy it if…

Also Consider

How I tested the JBL 104-BT

•  Used regularly for a couple weeks
• Tested with all sorts of games and music
• Tested different forms of connectivity

I used the JBL 104-BT Compact Desktop Reference Monitors regularly for a couple weeks. I used them to listen to all sorts of music as well as play a number of games including Cyberpunk 2077, Hogwarts Legacy, Hitman, and Battlefield 2042.

After using these speakers, it’s clear that they are great for general use, but not ideal for reference work, i.e. music production, despite the accessible price tag.

I’ve tested a lot of tech gear over the years from laptops to keyboards and speakers, and so have been able to use my expertise towards giving an honest and fair opinion, not to mention a critical eye, to any product I test.

•  First reviewed July 2024