Fosi Audio’s latest subwoofer SW10 is shaking things up — literally and figuratively. Priced at around $300, this 10-inch, 200-watt RMS sub is earning praise from none other than Z Reviews.
A Subwoofer That Doubles as Furniture
Z doesn’t just measure specs; he lives with his speakers. His first impression of the Fosi subwoofer wasn’t just about sound — it was about style. With its rounded matte-white cube design, it blends seamlessly into modern homes, looking more like a piece of minimalist furniture than an audio powerhouse.
“It looks like an ottoman, not a subwoofer,” he says. “Your partner won’t even know it’s a sub.”
For those tired of clunky black boxes dominating their living rooms, this design-first approach might be exactly what the audiophile aesthetic has been missing.
Power Meets Practicality
Despite its modest specs — 10 inches, 200 watts RMS — Z found the Fosi sub to be shockingly capable. He ran two units in stereo, noting that dual subs offer a level of “sound reinforcement” typically reserved for systems costing triple the price.
“Two 10s will beat one 12 any day,” he notes, explaining how the setup enhances musical depth and smooths room bass response.
Each sub includes intuitive controls for phase, crossover, and volume, along with two EQ modes:
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EQ1: For home theater and deep cinematic rumble
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EQ2: For music, offering a smoother, more natural roll-off
Z opted for EQ1 — because, as he puts it, “I like my house to shake.”
Clean, Simple, and Clever
One of the most unique aspects of this subwoofer is its minimalist plate amp. Instead of a bulky back panel with endless ports and toggles, Fosi’s design is compact and tidy, yet functional. Dual mesh-covered ports prevent debris from entering, and the overall build quality punches above its weight.
Even the knobs got a compliment:
“Some of the nicest knobs I’ve ever turned on a subwoofer.”
The Philosophy of Bass
Z’s review goes beyond hardware — it’s a meditation on the importance of bass itself. While a subwoofer only reproduces frequencies between roughly 20–60 Hz, he argues that this narrow range contributes 25% of a system’s emotional impact.
“A system without proper low-end is like an elephant without a trunk. It’s still there, but something essential is missing.”
Dual subs, he argues, don’t just make things louder — they make music feel whole.
Z’s Setup Insights
For this review, Z decoupled his subs from the main speakers entirely, controlling them via a separate DAC and miniDSP setup. This allows for precise volume matching, crossover tuning, and quick muting — the kind of granular control audiophiles crave.
He also emphasizes proper break-in. His pair ran for two days in opposite phase — “fighting each other” — to loosen up the suspension before serious listening. The result? A tighter, deeper, more organic sound.
Cat-Tested. Audiophile-Approved.
Of course, no Z Reviews video is complete without an appearance from his cat, Jubet, who gives the subs a literal “paws-on” approval by inspecting cables and lounging on top of the cube. According to Z, they “match the cat perfectly.”
Fosi’s new subwoofer isn’t a gimmick — it’s a genuine value disruptor. With stylish design, flexible tuning options, and real musicality, it’s an excellent entry point into multi-sub setups for both movie lovers and music enthusiasts.
At $300 each, it’s the kind of product that makes you ask: Why spend $1,200 when you can get 90% of the performance for half the price?
“They’re cheap enough to experiment with. Get two. Break them in. Hide them under a pillow. Let the cat sleep on them. Just don’t underestimate them.”
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