I want to tell you something upfront. I have tested a lot of portable speakers. Big ones, small ones, cheap ones, expensive ones. Most of them end up sounding pretty similar — decent enough, forgettable, easily replaced by whatever comes out six months later. You use them for a while, the novelty wears off, and they end up in a drawer somewhere.

The soundmatters foxl is not that kind of speaker.

I picked one up after seeing it recommended in a forum thread, mostly out of curiosity. It was small, it was a little pricey for its size, and the claims being made about it seemed almost too good to be true. A pocket-sized speaker that could genuinely compete with units three times its size? That sounded like marketing talk.

It was not marketing talk. Here is why the soundmatters foxl is still one of the most impressive portable speakers ever made — and why it deserves a lot more attention than it gets today.

1. The soundmatters foxl Was Ahead of Its Time

Before the Jawbone Jambox became a household name. Before every audio company started releasing slim little Bluetooth speakers. Before the market was flooded with cheap Chinese knockoffs in every size and color — there was the soundmatters foxl.

This is the speaker that essentially invented the category. The engineering that went into the foxl became the foundation that the Jambox was built on, and the Jambox then inspired practically every compact Bluetooth speaker that followed. So when you hold a soundmatters foxl in your hands, you are holding the original. The blueprint. The thing that started it all.

That history alone makes it interesting. But the soundmatters foxl is not worth talking about just because of where it came from. It is worth talking about because of what it actually sounds like.

2. The Person Behind It Had Three PhDs and Worked for NASA

This is not a speaker designed by a marketing team trying to fill a product gap. The soundmatters foxl was created by Dr. Godehard Guenther — a physicist with three PhDs and a background that includes work with NASA.

When someone with that kind of engineering background decides to build a small speaker, they do not approach it the way a typical audio company would. They solve it like an engineering problem. They look at physics, at acoustics, at the actual mechanics of how sound moves through a small enclosure — and they design something that works in a way that should not be possible given the size.

That is exactly what the soundmatters foxl is. A speaker that works in a way that should not be possible given its size.

3. The Bass Out of the soundmatters foxl Will Genuinely Surprise You

This is usually where people get skeptical, so let me be direct about it.

The soundmatters foxl produces real bass. Not suggested bass. Not the kind of low-end warmth that marketing people call “rich” when they mean “slightly less thin than you expected.” Actual thumping, physical bass that you can feel in your hand when you are holding the unit.

The speaker uses a passive radiator system on the back that handles the low frequencies in a way that most tiny speakers simply cannot replicate. Reviewers who tested the foxl against significantly larger units — including the JBL On Tour, which was a respected portable speaker at the time — found that the soundmatters foxl actually outperformed them on bass. Not matched. Outperformed. That says everything.

4. It Is Small Enough to Go Literally Anywhere

The soundmatters foxl measures roughly the size of an iPhone — a little taller and deeper, but narrower. It fits in a jacket pocket. It fits in a side compartment of a backpack. It travels without taking up meaningful space.

This sounds like a standard thing to say about a portable speaker, but the difference with the soundmatters foxl is that the size reduction does not come with the usual trade-offs. Most truly pocket-sized speakers give up bass, give up volume, or give up build quality to hit that small form factor. The soundmatters foxl gives up almost nothing. It is genuinely small and genuinely capable at the same time, which is a combination that remains impressive even now.

5. The Build Quality on the soundmatters foxl Is Exceptional

Pick up a soundmatters foxl and the first thing you notice, after the size, is how solid it feels. This is not a hollow plastic box. The unit has real weight to it — not excessive weight, but the kind of reassuring density that tells you something has been built to last.

The materials and construction reflect the premium price point. Everything about the soundmatters foxl feels considered and well-made. The buttons have a satisfying click. The ports are cleanly integrated. There is nothing about the physical unit that feels cheap or flimsy, which is more than you can say for a lot of speakers that cost twice as much today.

6. You Can Use It With a Cable Too — and It Sounds Even Better

One thing that often gets overlooked when people talk about the soundmatters foxl is that it is not purely a Bluetooth speaker. It has a 3.5mm input that lets you connect any device directly with a cable, and when you do that, the sound quality improves noticeably.

The wired connection bypasses the Bluetooth compression entirely, and the result is cleaner, fuller audio with better detail. For anyone who cares seriously about sound quality and is using the soundmatters foxl as a desktop or travel speaker rather than a casual wireless unit, the wired option makes it genuinely competitive with much larger and more expensive speakers.

7. The soundmatters foxl Even Has a Subwoofer Output

Yes, really.

On the side of the soundmatters foxl, there is a subwoofer output port. If you want even more low-end presence — which honestly feels unnecessary given how much bass the foxl already produces — you can connect a compatible subwoofer and take the listening experience to another level entirely.

Soundmatters made their own SUBstage product to pair with it. Most people will never need or use this feature. But the fact that it exists on a speaker this small says something about how seriously the engineering team took the product. They were not building a convenience gadget. They were building a serious piece of audio equipment that happened to be portable.

8. The Accessories Package Reflects the Premium Experience

When your soundmatters foxl arrives, it does not come in a plain box with a USB cable and a card telling you to download an app. The accessory package is genuinely thoughtful.

You get a universal wall charger with travel adapters for multiple countries. You get a 3.5mm stereo cable. You get a Mini USB charging cable. You get an acoustic mat — because the bass is strong enough that the unit actually needs something to stop it from vibrating across smooth surfaces. You get a travel pouch. You get a wrist strap. Everything you need to actually use the speaker well, right out of the box.

That level of attention to the complete experience is something a lot of speaker brands still have not figured out.

9. It Has Been Used and Trusted in Some Demanding Real-World Situations

One reviewer famously used the soundmatters foxl on a vacation specifically to avoid having to pack large speakers and deal with extension cords. The verdict was that it filled rooms and outdoor spaces in a way that simply should not have been possible from something that small.

Another tester passed it to someone who commuted to work by bicycle, and the soundmatters foxl held up through daily outdoor use without complaint. These are not controlled listening room conditions. These are real situations with wind, movement, competing noise, and the general chaos of being taken everywhere. The foxl handled all of it.

10. The soundmatters foxl Taught the Industry What Small Speakers Could Be

Here is the big picture thing about the soundmatters foxl that I keep coming back to.

Every time you see a compact Bluetooth speaker today — every Bose SoundLink Micro, every JBL Clip, every little speaker someone has sitting on their kitchen counter — there is a direct line back to what the soundmatters foxl proved was possible. It proved that a small speaker could have real bass. It proved that a pocket-sized unit could be built with premium materials and serious engineering. It proved that you did not have to choose between portability and sound quality.

The market took that lesson and ran with it. The soundmatters foxl may not be the newest thing on the shelf anymore, but it was the thing that made all the newer things possible. And for that reason alone, it deserves to be remembered and respected.

Should You Still Look for a soundmatters foxl Today?

If you come across a soundmatters foxl in good condition — yes, absolutely.

It is a piece of audio history with a sound that still holds up. The bass performance alone puts it ahead of most modern speakers in its size class. The build quality means a well-maintained unit will keep performing. And owning one gives you a direct connection to the moment when small speakers stopped being a compromise and started being something genuinely worth caring about.

The soundmatters foxl is not just a speaker. It is the speaker that started everything. And that is worth something.