I test a lot of audio gear, including speakers. Not just Bluetooth speakers, of course: smart speakers, home speakers, you name it. Sometimes, when I test a speaker and notice that it costs the same as another speaker, my mind can't help but pit them against one another. I'm a tech reviewer, after all, that's my job! But what happens when one's a Bluetooth speaker and the other is a mains-powered home speaker?
That's what happened this week when I reviewed the beautiful Marshall Stanmore IV. It's a mains-powered speaker and the latest addition to the fourth iteration of Homeline, Marshall's series of indoors home speakers. I awarded it 4.5-stars and the coveted Editor's Choice Award in my review. And you know what else received the same score?
The JBL Xtreme 5. Though I didn't review it — my colleague Erin did — I've listened to it and I agree with everything she said in her review. The Xtreme 5 costs the same as the Stanmore IV: $399 in the U.S. Of course, the Xtreme 5 is a rugged speaker that can be used outdoors, which is quite the opposite of the Stanmore IV. So, if you had to choose one, which is right for you? I know which is right for me, so let's get into it.
Outdoors or at-home listening?
If you want to find out how the speakers sound, check out Erin's JBL Xtreme 5 review and my Marshall Stanmore IV review for our in-depth thoughts on sound quality.
The biggest question to ask yourself when deciding between the JBL Xtreme 5 and the Marshall Stanmore IV is this: "Am I taking it outdoors, or leaving it at home?" If the answer is outdoors, then the Xtreme 5 is the natural choice.
This speaker is extremely rugged, capable of surviving drops and falls. It's IP68-rated, making it waterproof and the most durable speaker on the market right now.
In terms of portability, the Xtreme 5 weighs 6.4lbs and features a carry strap, so you can lug it around on your shoulder. And just because it's designed for the outdoors doesn't mean you can't use it indoors either. Bluetooth 6.0 wireless and lossless USB-C wired playback make it the speaker that can do everything, really.
But I wouldn't be so quick to write off the Stanmore IV either. Sure, you can't really use it away from a plug but if it's pure power and rock 'n' roll sound you're after, this is the speaker to get. The main advantage of a mains-powered speaker is that it delivers consistently high volume, as the mains power drives the internal amplifiers at full capacity, delivering a great dynamic range. Battery-powered Bluetooth speakers, on the other hand, often try to conserve energy so they can't always play at consistently high volumes.
The Xtreme 5 can get loud, but the Stanmore IV can get very loud. I've soundtracked dinners on my balcony with the Stanmore IV. Even when it's been playing indoors, it's been loud enough to hear outside. Dynamic Loudness, which is Marshall-speak for fine-tuned frequencies that sound the same regardless of the volume, plays a key role here too, as you can listen at the highest volume without any noticeable distortion. Marshall's 'Made of Loud' motto makes a lot of sense now.
There is another...
Likewise, to find out more about the sound quality, read my full JBL Go 5 review and Marshall Acton IV review.
To quote the great philosopher Yoda, "There is another." The Marshall Stanmore IV isn't the only new kid on the block, or addition to the Marshall Homeline IV, if you will. There's also the Marshall Acton IV, which is basically a smaller (and cheaper) version of the Stanmore IV. It looks near-identical and its internal hardware is almost the same too — except that it has a smaller, 4-inch woofer compared to the Stanmore IV's 5-inch woofer.
In a similar vein, the JBL Xtreme 5 isn't the only speaker that dropped in March 2026. I reviewed the JBL Go 5 when it came out and I absolutely loved it. It quickly became my go-to for taking outdoors, as I loved its pocketable form factor.
Just like the Xtreme 5, the Go 5 is also IP68-rated and drop-proof. If the Xtreme 5 is out of your budget, the Go 5 is a fantastic sub-$60 speaker. And this is a nice segue into why we're all here: the speaker I'd choose...
We have a winner
This is a personal take, but I'm not a fan of carrying around big speakers when I go on a picnic with my partner or friends. Thing is, I'm never going to be blasting my tunes outdoors — I don't like disturbing the local wildlife. All I want is a portable speaker that's loud enough to soundtrack a small gathering without disturbing anyone else.
The JBL Go 5 does just that — and truth be told, many other small speakers do, too, like the Tribit StormBox Mini+ (which, since reviewing, I still use today). If push came to shove and you asked me to choose between the JBL Xtreme 5 and the Marshall Stanmore IV, I'm going with the Stanmore IV. I love having a speaker that's plugged in all the time, and playing tunes on it when my partner and I are cooking, or she's making art and I'm playing a video game.
If I had to spend $399 on one speaker, the Stanmore IV would be an easy decision for me. It's got the retro looks, the loud and ridiculously stunning sound, and connectivity in spades, and it feels like the perfect home speaker. The Xtreme 5 is no doubt awesome in its own right, but it's just not for me. My ideal combination is a powerful home speaker and a tiny pocketable speaker — so I'm sticking with the Stanmore IV and the Go 5 for as long as I can.
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More from Tom's Guide
- The JBL Go 5 is one of the best budget speakers I’ve tested, and it offers stellar sound for just $54
- ‘Easy on the eyes and ridiculously stunning sound’ — I tested the Marshall Stanmore IV home speaker and it’s coming for Sonos’ crown
- JBL Xtreme 5 review: The most rugged, bassiest, and gnarliest Xtreme yet
