HiVi-Swans D3.1 MKII Passive Bookshelf Speakers, 6.5" 2-Way Home Speakers Pair - Needs Amplifier or Receiver to Operate
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers, 6.5" 2-Way Home Speakers Pair - Needs Amplifier or Receiver to Operate
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
HiVi-Swans D3.1 MKII Passive Bookshelf Speakers
★Editor's Choice

HiVi-Swans D3.1 MKII Passive Bookshelf Speakers, 6.5″ 2-Way Home Speakers Pair

(5 customer reviews)

Featured in our review: HiVi-Swans D3.1 MKII Review – Affordable Speakers That Challenge High-End Audio

HiVi-Swans D3.1 MKII is a pair of passive 2-way bookshelf speakers with a 6.5-inch woofer and a 28 mm dome tweeter in an angled-baffle (“acoustic tilt”) cabinet. The brand’s text on the Amazon listing gives 85 dB sensitivity (2.83 V / 1 m), 8 ohm impedance, 10 to 120 W amplifier power and 39 Hz to 20 kHz. They are passive: you need a stereo amplifier or receiver, and with 85 dB sensitivity a capable one. We found no HiVi-Swans manufacturer spec page for this model and no independent measurements, so the figures are the brand’s claims. Check the current price on Amazon below.

Audiophile community verdict: See r/BudgetAudiophile community threads

$539.99

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Video Review

HiVi-Swans D3.1 MKII: passive 2-way bookshelf pair that needs a capable amplifier

The D3.1 MKII is a passive bookshelf speaker pair from HiVi-Swans. It has a 6.5-inch woofer, a 28 mm dome tweeter and an angled baffle, and it has no built-in amplifier. The specifications below come from the brand’s text on the Amazon listing, because we found no HiVi-Swans manufacturer page with a spec table for this model, and we found no independent measurements. Treat the numbers as claims.

What the listing states

  • Drivers: 6.5-inch woofer and 28 mm dome tweeter in an “acoustic tilt” cabinet.
  • Sensitivity: 85 dB at 2.83 V / 1 m. That is on the low side for a bookshelf speaker, so plan for an amplifier with real power.
  • Impedance and power: 8 ohm, 10 to 120 W.
  • Frequency range: 39 Hz to 20 kHz. Retailer listings differ on the upper limit and we could not confirm the bass figure.
  • Size: 14.17 in deep, 8.58 in wide, 14.88 in high.

Who it’s for

Buyers who already have, or plan to buy, a capable stereo amplifier and want a larger passive bookshelf speaker. We sell amplifiers that suit it, for example the Fosi ZA3, the Fosi BT20A MAX and the AIYIMA A80.

Who should skip it

Skip these if you do not want to buy an amplifier separately: they are passive. The HiVi-Swans OS-10 is the active alternative. Also skip them if you need verified measurements before you buy; we found none.

Common questions

What amplifier should I pair with the D3.1 MKII? The brand lists 10 to 120 W at 8 ohm and 85 dB sensitivity, so choose an amplifier with real power rather than a very small one. See our bookshelf speaker guide and Class D amplifier guide.

Do they need a subwoofer? The brand claims 39 Hz. We found no measurement that confirms it, so judge bass in your own room and add a subwoofer if you want more.

How do they compare with other bookshelf speakers we sell? See the roundup for sensitivity, impedance and size side by side.

Where to buy

Amazon US is the main US-shipped path. The button below opens the listing.

SKU: B0FCFG9TTY Category: Brand:
We have not verified a summary of owner reviews for this model, and we found no independent measurements, so this tab lists only what follows from the published specifications (brand text on the Amazon listing, as read 2026-10-31).

What follows from the specs

  • Passive speakers: they need a stereo amplifier or receiver. Do not connect them directly to a phone or computer.
  • Sensitivity is 85 dB: choose an amplifier with real power. The brand lists 10 to 120 W at 8 ohm.
  • Bass is a brand claim: 39 Hz is not confirmed by any measurement we found.

Amplifiers we sell

  • Fosi ZA3: balanced input, no Bluetooth.
  • Fosi BT20A MAX: Bluetooth, remote and subwoofer output.
  • AIYIMA A80: DAC amplifier with USB, optical and coaxial inputs.

More options: Class D amplifier guide and bookshelf speaker guide.

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Specification

BrandHiVi-Swans
ModelD3.1 MKII
Type2-way passive bookshelf speakers (pair)
Woofer6.5-inch
Tweeter28 mm dome
DesignAngled baffle ("acoustic tilt") per the brand text
Sensitivity85 dB at 2.83 V / 1 m (brand text on the Amazon listing)
Impedance8 ohm (brand text)
Power Handling10 - 120 W (brand text)
Frequency Range39 Hz - 20 kHz (brand claim; retailer listings differ at the top end)
Dimensions14.17 x 8.58 x 14.88 in (D x W x H)
ManufacturerSWAN (HiVi-Swans)

Based on 5 reviews

4.9 overall
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  1. S. Lindsay –

    I don’t write reviews a lot but I gotta review these. They are insane for the price. Nothing I’ve seen or heard comes close to these for the price point. Beautiful highs and mids, amazing imaging. The bass is ridiculous for bookshelves. It doesn’t PUNCH you like a sub would but the range these have is seriously impressive. Z reviews was right… buy these.

    S. Lindsay –

  2. Amazon Customer –

    I didn’t just buy these; I bought TWO pairs!!.

    As a veteran reviewer for Media Express – with 30+ years in the audiophile game, I can tell you: HiVi-Swans just pulled off the impossible.

    I managed to get my hands on these and test them a full week before ZeosPantera dropped his viral review, and my initial reaction was exactly the same: These are “Nuts.”

    The Sound: Out of This World The scale of sound coming out of these “babies” is simply not from this planet. The 6.5″ woofer and the 28mm German dome tweeter work in a synergy that defies physics. It’s a 3D wall of sound that hits you with an emotional impact usually reserved for high-end floorstanders.

    CRITICAL WARNING – Read before buying: If you are a “flat sound” purist who wants a boring, clinical, and analytical frequency response—DO NOT BUY THESE. Go buy some dry studio monitors instead. Don’t buy these just to leave a 1-star review because they aren’t “flat.”

    These speakers are for people who want EMOTIONS. They are tuned for:

    Earth-shattering bass that makes you look for a hidden subwoofer.

    Crystal-clear highs that make you smile every time a string is plucked.

    Musicality that turns a listening session into an experience.

    The Verdict from a Pro: HiVi-Swans has disrupted the entire Hi-Fi industry with the D3.1 MKII. They don’t just play music; they deliver a performance. The size-to-performance ratio is completely broken—they sound massive, expensive, and incredibly refined.

    Whether you are in Chicago or anywhere else in the U.S., these are the gold standard for 2025. If you want to stop analyzing graphs and start enjoying your music again, this is your endgame.

    Amazon Customer –

  3. Artur –

    I have a few speakers in my collection (eg) Elac Db 63 Monitor audio silver 100 7g Q Acoustics concept 50 Klipsch Rp 500m mk2. Wharfedale linton 85th anniversary Dali oberon 5 both recently sold. I have heard and had many more the few i mentioned but this speaker is the best sounding speaker I have ever heard its unbelievable its detailed imagiing is lovely it’s musical has bass sound stage is superb i don’t think you can better this speaker without spending a small fortune. For the price paid am gobsmacked Thanks to Z review i stumbled on watching YouTube..

    Artur –

  4. S. Lindsay –

    They have no right to be in this price category. I think they even top my Elac bd63’s, Buchardt s300’s and Heco Celan 3’s although close to the last two mentioned. All of those above are absolutely great boxes. I definitely had to get used to their sound. It was different than what I’m accustomed to. But one word for me at least.
    MAGIC . Crazy imaging. I can’t emphasize that enough. Sound staging and detail. The little stuff in the mix is noticeable. Stuff that gets drowned out by other speakers. Zeos was right. “How you do that”…They live out of the confinement of their MDF walls. I don’t want to change them out. I only have maybe 15-20hrs on them so there’s still a way to go. There’s one thing to mention. I wish the feet were removable. They don’t properly fit on my 24-In mono price stands.

    They are big, heavy boxes. I was surprised my pair made their journey in one piece. The box was destroyed and falling apart by the time it got to my doorstep. They should have been double boxed or at least had more bracing inside. The only thing that was holding it together was the large copper staples. I was expecting some cracked MDF board but alas, both were in perfect condition. Other than that…I definitely encourage anyone to try these out. I don’t think they will disappoint

    Update 1/26 :
    Definitely a speaker with its own sound. I feel it’s a little thin in the mids. And there is a lower treble bump which I got used to. I would love to see Erin do an analysis on these. I tend to listen to warmer speakers. I now have a range of speakers to jump back and forth from. These really do not fall in my wheelhouse. But that said, it’s been hard for me to pull them out of the rotation. They keep going back in. I use them in an office situation mostly for low to mid level listening (solid state, digital, and tube amps). That’s where they shine for me.
    The treble did smooth out quite a bit. It was a little harsh at first but it’s on the level now. Any bright recording is going to show through though. They are not forgiving in that regard. That’s the only downfall with these, amonst a midrange dip.
    The imaging and soundstaging are what keep these going back in. They rank up there with my Def Tech Demand d15/d17 towers in that regard. I got both of those sets when everyone was dumping them. Those are a couple of the best deals I was ever able to take advantage of. But that’s another story. There is something special about these Swans that keep me coming back for more. And that’s all that we can ask for in this hobby. Sure they are not going to appeal to everyone. As for me, I can not stop listening to them 🤓🤟

    S. Lindsay –

  5. Peter –

    These are seriously impressive.

    They have shocking bass extension and tightness for their size likely do to their oversized voice coil. For most music, you probably won’t be missing anything if you don’t have a sub.

    Mids and highs are very clear, though the highs are slightly emphasized to my ear, but nowhere near enough to be a true negative.

    Detail throughout the full range is exceptional, especially considering their price.

    Soundstage and imaging are fantastic, far exceeding expectations.

    I can’t imagine myself finding anything close to this price point that can beat these. I wholeheartedly recommend them. They are incredible.

    They won’t replace a higher end system like Philharmonic BMR Towers, but they are far closer than any other speaker or headphone I own, and 1/8th the cost.

    Buy them. You won’t regret it.

    Peter –

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