Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.

What reviewers think

Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.

Product Strengths

  • Mid-range is tight, focused, and more 'real', allowing a listener to peer right into it
  • High-end is airy and not harsh, allowing for hours of listening without fatigue
  • Imaging is sharp and defined with pinpoint accuracy and depth
  • Accuracy is maintained even at low volumes
  • Brutally honest sound

Product Considerations

  • The One18 requires an external amplifier, as it is a passive monitor
  • The One18 may sound a little flat or bland at first
  • The One18's bass response is not as deep as some other monitors and may require a subwoofer
  • The included speaker wires could be a bit longer

Comparisons (according to reviewers)

  • The Amphion One18 has a more natural midrange than the JBL LSR308, while the JBL's midrange is more forward and 'in your face'
  • The JBL LSR308 has a deeper bass response than the Amphion One18

Takeaway: The Amphion One18 provides an accurate and honest sound, especially in the midrange, which translates well to other playback systems. Its precise imaging and comfortable high-end make it a great tool for critical listening and mixing.

How useful are hifi reviews? We consider them useful for three things: (1) Surfacing new products you should demo in person at a dealer. (2) Learning which products reviewers unanimously praise as the best they've ever heard (this means they probably are legitimately great). (3) Identifying a product's unique attributes that satisfy your idiosyncratic needs and tastes. Beyond that, we  discount what reviewers say because they heap praise on everything—rarely being negative for fear of souring relationships with manufacturers. Further, they seldom have more than a couple products on-hand at once, relying on their imperfect memories to compare to past products.

Compared to their other products

We think it's helpful to understand how this product fits into the brand's full lineup (below). To learn more about these products, visit the brand's page.

Helium 510

  • Positioning: A versatile bookshelf loudspeaker positioned as the most popular model in the Helium series.
  • Description: Offers exceptional midrange clarity and a room-wide sweet spot, making it ideal for small to medium-sized rooms. Its low crossover point and seamless driver integration set it apart from the Argon series, which focuses more on bass extension. This model is perfect for those seeking high performance at lower listening volumes without the need for extensive amplification.

Argon 0

  • Positioning: A compact desktop loudspeaker designed for high performance in small spaces.
  • Description: Praised for its natural sound and compact design, making it perfect for desktop use or small rooms. Unlike the larger Argon models, it focuses on delivering high-quality sound in a smaller form factor.

Argon 1

  • Positioning: A reference-quality bookshelf loudspeaker offering a balance of performance and affordability.
  • Description: Provides a clean and detailed sound with a surprisingly low-reaching bass, making it suitable for both music and home theater use. It offers a more refined midband compared to the Argon 0, appealing to those who prioritize sound quality over compactness.

Argon 7LS

  • Positioning: A floorstanding loudspeaker known for its deep emotional impact and high performance.
  • Description: Uses technologies from Amphion's flagship studio monitors, providing a wide soundstage and exceptional clarity. It offers a more immersive experience compared to the bookshelf models.

Krypton 3X

  • Positioning: Amphion's flagship floorstanding loudspeaker, representing the pinnacle of their audio technology.
  • Description: Features a unique cardioid midrange design that minimizes unwanted reflections, making it suitable for challenging acoustic environments. Its innovative design and powerful bass response set it apart from the Argon series, offering a full-range sound that is unmatched in the lineup.
See all the brand's products

Read the reviews

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An excellent review of a great product
/
Publisher
/
3/1/2022
An excellent review of a great product
Publisher
/
3/1/2022

Manufacturer's notes

Amphion One18 is a trusted all-rounder and most widely used of our studio monitors. Their revealing, flat, yet pleasant character make them highly usable for all sound-making tasks in a wide variety of rooms and setups.
  • Operating principle: Two-way, passive radiator
  • Drivers: 1" titanium tweeter, 6½" aluminum woofer
  • Crossover point: 1600 Hz
  • Impedance: 8 Ω
  • Sensitivity: 85 dB @ 2.83V/1m
  • Frequency response: 45 – 20 000 Hz +/-3dB
  • Power recommendation: 100 – 350 W
  • Dimensions (H x W x D): 380 x 190 x 305 mm (14.96" x 7.5" x 12")
  • Connectors add: 39 mm / 1.54" to depth
  • Weight: 10 kg (22 lbs)
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Average Price
$1,001-$2,500
Used Products
10
 Available (Scroll Down)
Brand Popularity
94
 of 600+
Badges
Top 50 Brand
Top 250 Brand
Products
21
Founded
1998

Our take on the brand

Amphion is a Finnish hifi speaker brand that uses passive radiators instead of bass ports and places the crossover point at 1600 Hz (below critical hearing range) to achieve better phase coherence and driver integration. Their speakers, handmade in Finland, are particularly popular in professional studios due to their waveguide technology and electrically simple design that enhances resolution while creating a seamless soundstage.
Julian Shapiro
ExtremeHiFi
Brand Page
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What if you spend a bit more?

Anniversary 10
3988
3988
/
13
Reviews
Buchardt

The Anniversary 10 (A10) is a culmination of all the experience that we have gathered over the last 10 years of designing and building HiFi speakers. Over the last decade, we have produced and sold thousands of speakers to happy HiFi enthusiasts from all around the world. Listening to feedback from our customers, learning from the best and adding our own flavor to the mix, has created extremely popular and critically acclaimed speakers, and now, this has evolved into our best sounding speaker yet. The A10 is something we are truly proud of, both in terms of sound, look and production values. It is a true celebration of our passion for amazing high-end sound, great engineering and high value products.

Buchardt Audio is a direct-to-consumer speaker brand that uses an "upside down" design with a back-mounted passive radiator, which helps create high-end sound at more affordable prices. Their speakers are engineered with advanced measurement technology and a proprietary waveguide design that enhances off-axis listening, while delivering deep bass from compact cabinets that rival larger floor-standing speakers.
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Our Summary

Product Strengths

  • Exceptional bass performance for its compact size, with bass that is fast, clear, and tight
  • Multiple 'Master Tunings' offer customizable sound profiles, adapting to different room acoustics and user preferences
  • A high-quality Purifi woofer and SB Acoustics tweeter contribute to clarity, detail, and low distortion
  • A solid wood cabinet made in Denmark provides a luxurious look and feel

Product Considerations

  • Bass output may diminish or be limited at high volumes to protect the drivers from damage
  • A separate purchase of the Platin Stereo Hub may be required for full wireless functionality and room correction
  • The 'Made in China' label applies to the electronics inside the cabinet
  • While the A10 offers impressive bass, some may still prefer to add a subwoofer for a true full-range experience

Comparisons (according to reviewers)

  • Vs Buchardt S400 Mark II, the A10 is more transparent with greater inner detail, clarity, and top-end extension—and deeper, tighter bass—while the S400 Mark II is more relaxed and forgiving with harsh recordings
  • Vs Buchardt A500, the A10 has comparable performance, with possibly a crisper sound in some instances

Takeaway: The Buchardt Anniversary 10 is a compact yet powerful speaker that offers a customizable listening experience. Its impressive bass and versatile tuning options make it a great choice for those seeking a high-quality audio solution in a small to medium-sized room.

Video review

Our take on the brand

Buchardt Audio is a direct-to-consumer speaker brand that uses an "upside down" design with a back-mounted passive radiator, which helps create high-end sound at more affordable prices. Their speakers are engineered with advanced measurement technology and a proprietary waveguide design that enhances off-axis listening, while delivering deep bass from compact cabinets that rival larger floor-standing speakers.
Julian Shapiro
ExtremeHiFi Writer
Visit our
Anniversary 10
page
Product Page
BM 15A
3158
3158
/
4
Reviews
Dynaudio
Dynaudio is a hifi speaker brand known for its unique external voice-coil construction, which allows for larger voice coils that improve thermal power handling and reduce thermal compression. The brand has a heritage in professional sound production and uses advanced materials like the Esotar 40 tweeter and rare 240mm drivers to deliver superior dynamic realism and headroom.
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Expand Details

Our Summary

Product Strengths

  • Delivers greater tightness and precision from the crossover point on down
  • Delivers an extended high-frequency range, with greater detail and more openness without harshness
  • Stereo imaging is amongst the best
  • Has no sweet 'spot', which allows the engineer, producer, and client a fairly similar listening experience
  • Has a smoothly extended bass response that reveals what is really going on in that elusive bottom octave

Product Considerations

  • The BM-15As may be overkill for a smaller mixing environment and better suited for larger rooms
  • High end is as clean and accurate as the BM-12s, but the mids were a little lacking
  • While they have a slightly forward characteristic, it doesn't get in the way of accurate monitoring

Comparisons (according to reviewers)

  • Vs Dynaudio BM-12 MK3s—BM-15A has more bass extension and pure raw SPL power
  • Vs Dynaudio BM-12 MK3s—BM-12 MK3s have more detail in the mid-range
  • Vs Dynaudio BM-12 MK3s—BM-15A are far louder and put out substantially larger amount of energy in the bass and subs
  • Vs Genelec, Focal, Neumann, and Event—the Dynaudio BM series are in the same class as these monitors

Takeaway: The BM15A is a speaker that gives great stereo imaging with a wide frequency range, and produces an accurate sound which is nice to listen to for long periods. Full-range monitoring in a smaller studio is possible with these speakers.

Video review

Our take on the brand

Dynaudio is a hifi speaker brand known for its unique external voice-coil construction, which allows for larger voice coils that improve thermal power handling and reduce thermal compression. The brand has a heritage in professional sound production and uses advanced materials like the Esotar 40 tweeter and rare 240mm drivers to deliver superior dynamic realism and headroom.
Julian Shapiro
ExtremeHiFi Writer
Visit our
BM 15A
page
Product Page
LS3/5A
2799
2799
/
4
Reviews
Musical Fidelity

The LS3/5A was originally designed for listening places where space was limited, like mobile control rooms for television. The goal was a linear frequency response down to 100Hz with an excellent sound quality. Due to the closed type cabinet, the LS3/5A convinces with its clear and fast playback. As the speaker was designed to be used for studio applications, the midrange is extremely detailed and realistic. The sound stage and imaging of vocals and instruments is truly extraordinary. The LS3/5A works best in a near/mid-field listening distance between two and four meters away from the listener.

Musical Fidelity is known for its unique amplifier designs, particularly the A1 integrated amplifier that uses its top plate as a heatsink and features a distinctive current-mode phono stage. The brand stands out for its innovative dual-monoblock approach in integrated amplifiers, where separate power transformers and dedicated power supplies are housed in a single chassis, as seen in their M8xi and M6i models that deliver exceptional power output.
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Expand Details

Our Summary

Product Strengths

  • Delivers a clean, smooth, even, and detailed sound with pleasing subtlety and fine imaging
  • Midrange is incredibly natural and fatigue-free with a slight warmth
  • Exquisite build quality
  • This version is reportedly one of the best-sounding LS3/5A variants on sale

Product Considerations

  • Rolled-off bass response may need a subwoofer
  • The sensitivity is very low, requiring more power from the amplifier
  • Uppermost treble may lack the extension and air of ultra-modern speakers
  • Some compression may be heard at high volumes

Comparisons (according to reviewers)

  • Vs Sonos Faber Lumina 2: The Lumina 2 is even crisper up top, but leaner in the mid-bass

Takeaway: The Musical Fidelity LS3/5A is a classic speaker design reborn, offering a smooth, detailed, and natural sound that is particularly well-suited for small listening rooms and those who prioritize midrange richness. It can work well with a variety of music and amplifiers.

Video review

Our take on the brand

Musical Fidelity is known for its unique amplifier designs, particularly the A1 integrated amplifier that uses its top plate as a heatsink and features a distinctive current-mode phono stage. The brand stands out for its innovative dual-monoblock approach in integrated amplifiers, where separate power transformers and dedicated power supplies are housed in a single chassis, as seen in their M8xi and M6i models that deliver exceptional power output.
Julian Shapiro
ExtremeHiFi Writer
Visit our
LS3/5A
page
Product Page
LS5/9
4799
4799
/
1
Reviews
Musical Fidelity

The Musical Fidelity LS5/9 is a two-way bass reflex speaker which was designed to reproduce sound at high levels to fulfil the complete range of music genres from classical to pop music. As the speaker was originally designed for recording studio applications, a low level of coloration was the goal to keep the musicitself untouched.

Musical Fidelity is known for its unique amplifier designs, particularly the A1 integrated amplifier that uses its top plate as a heatsink and features a distinctive current-mode phono stage. The brand stands out for its innovative dual-monoblock approach in integrated amplifiers, where separate power transformers and dedicated power supplies are housed in a single chassis, as seen in their M8xi and M6i models that deliver exceptional power output.
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Expand Details

Our Summary

Product Strengths

  • The Harwood LS 5/9 is a largely faithful replica of the legendary BBC monitor
  • It has a pleasingly high efficiency of 88 dB
  • It has a pleasingly linear progression of impedance, phase and EPDR, making it easy to drive with almost any amplifier
  • High maximum level of 95 dB (continuous) and up to 105 decibels with music
  • The sober and precisely tuned bass range enables the listener to push the LS 5/9 close to the rear wall without excessive booming bass

Product Considerations

  • The replica tweeter is a good 2 decibels quieter than the original, which called the original BBC poll into question
  • The LS 5/9 has a restraint in the mids (between 1.5–4 KHz), which is also reflected in the sound
  • The LS 5/9 is not among the liveliest loudspeakers under the sun
  • The tweeter adjustment requires re-soldering cables to the tweeter on the front

Comparisons (according to reviewers)

  • The LS 5/9 plays lively compared to the LS 3/5a, which has virtually no dynamics at all
  • The LS 5/9 is roughly on a par with the Dynaudio Heritage Special in terms of agility
  • The Dynaudio Heritage Special produces much more and deeper bass from a considerably smaller cabinet
  • The Dynaudio Heritage Special presented details in the mids and highs with even more grip, finesse, and airiness
  • The LS 5/9 offers a very independent, highly cultivated form of reproduction that can be a charming alternative to equally expensive, modern designs
  • The Harwood LS 5/9 sounds like an original Rogers model from the late 1980s

Takeaway: The Harwood LS 5/9 is a well-made replica that offers a musically natural tuning. It is electrically undemanding, making it suitable for any amplifier, and offers a charming alternative to modern designs.

Video review

Our take on the brand

Musical Fidelity is known for its unique amplifier designs, particularly the A1 integrated amplifier that uses its top plate as a heatsink and features a distinctive current-mode phono stage. The brand stands out for its innovative dual-monoblock approach in integrated amplifiers, where separate power transformers and dedicated power supplies are housed in a single chassis, as seen in their M8xi and M6i models that deliver exceptional power output.
Julian Shapiro
ExtremeHiFi Writer
Visit our
LS5/9
page
Product Page

What else competes at this price?

A8H
1499
/
Released
2022
ADAM Audio
The pinnacle of the A Series, the A8H is a 3-way speaker that delivers the extremely accurate and analytical sound required for critical-listening environments. The A8H incorporates an 8-inch resonant Multi-Layer Mineral (MLM) fiber woofer, innovative midrange driver, and handmade precision X-ART tweeter, which together produce an ultra-wide frequency response. Like the other members of the A Series family, the A8H gives you tremendous flexibility for fine-tuning the sound through rotatable HPS waveguide technology and onboard DSP. At home across a full range of audio applications in mid- to full-sized spaces, the A8H is the right choice when you're looking for the most detailed representation of your audio.
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ADAM Audio is renowned for its innovative ART tweeters, which enhance the Air Motion Transformer concept by moving air four times faster than their folds for high-definition sound. Their monitors, especially the S Series, are favored by sound engineers for their accurate and transparent sound, advanced engineering, and reduced distortion, while the T Series offers affordable, high-performance studio monitors.
Expand Details

Our Summary

Product Strengths

  • Detailed and powerful low-end response
  • Articulate midrange driver
  • Crisp and airy high-end without harshness
  • The built-in EQ and Sonarworks SoundID Reference integration allows users to tailor the sound to their specific room acoustics
  • Wide, deep, highly detailed, and solidly centered soundfield

Product Considerations

  • Self-noise/hiss can be noticeable up close
  • To fully use the Sonarworks feature after the trial, users would need to purchase the software
  • Some users experienced initial connection hiccups with the A Control app

Comparisons (according to reviewers)

  • The A8H offered a better value than the Dynaudio LYD 48 due to sound, build quality, and features like the built-in EQ
  • The A8H offers more DSP capabilities, and is less expensive than the HEDD Audio Type 20 MK2 or Neumann KH310
  • It is halfway between the less expensive but less sophisticated Dynaudio LYD 48 and ADAM Audio's own S2V—which, although a 2 way, offers step up in terms of sophistication

Takeaway: The A8H studio monitors deliver exceptional sound quality with user-friendly features—enhancing the overall audio production experience. These monitors, with versatile connectivity, DSP-driven room adaptation, and impressive audio performance, are a great choice for those serious about audio.

Video review

Our take on the brand

ADAM Audio is renowned for its innovative ART tweeters, which enhance the Air Motion Transformer concept by moving air four times faster than their folds for high-definition sound. Their monitors, especially the S Series, are favored by sound engineers for their accurate and transparent sound, advanced engineering, and reduced distortion, while the T Series offers affordable, high-performance studio monitors.
Julian Shapiro
ExtremeHiFi Writer
Visit
A8H
Page
Product Page
Core 5
1699
/
Released
2024
Dynaudio
Core 5 is the most compact model in our range of high-end professional reference monitors. It's a two-way nearfield design that's been created to work in cramped spaces in a stereo configuration, or to provide width and height support in an immersive set-up. And, crucially, to give you usable SPL for those jobs – so if you're in an OB truck or a smaller mix-stage, you won't strain to hear, and your eardrums won't be blasted.
Check on Amazon
Dynaudio is a hifi speaker brand known for its unique external voice-coil construction, which allows for larger voice coils that improve thermal power handling and reduce thermal compression. The brand has a heritage in professional sound production and uses advanced materials like the Esotar 40 tweeter and rare 240mm drivers to deliver superior dynamic realism and headroom.
Expand Details

Our Summary

Product Strengths

  • Excellent balanced delivery with precise midrange
  • Well-specified, easy-to-use EQ and room correction settings
  • Good low-frequency extension given its compact size
  • Produces a beautifully clean and well-defined sound, with no harshness in the highs and a real sense of spatial depth and stereo width
  • As mixing tools, they tell it like it is, so good mixes sound 'right' and flaws are shown up clearly, just as they should

Product Considerations

  • Expensive
  • There's no straightforward way to hook up the Core 5s to the Core Sub Compact if all connections are to remain analogue

Takeaway: The Core 5 is a compact, accurate, and high-quality studio monitor that delivers a balanced and detailed sound perfect for smaller studios or immersive setups. It is comfortable to work with for extended periods, making it a great choice for professional use.

Video review

Our take on the brand

Dynaudio is a hifi speaker brand known for its unique external voice-coil construction, which allows for larger voice coils that improve thermal power handling and reduce thermal compression. The brand has a heritage in professional sound production and uses advanced materials like the Esotar 40 tweeter and rare 240mm drivers to deliver superior dynamic realism and headroom.
Julian Shapiro
ExtremeHiFi Writer
Visit
Core 5
Page
Product Page

Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.

What reviewers think

Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.

Product Strengths

  • Mid-range is tight, focused, and more 'real', allowing a listener to peer right into it
  • High-end is airy and not harsh, allowing for hours of listening without fatigue
  • Imaging is sharp and defined with pinpoint accuracy and depth
  • Accuracy is maintained even at low volumes
  • Brutally honest sound

Product Considerations

  • The One18 requires an external amplifier, as it is a passive monitor
  • The One18 may sound a little flat or bland at first
  • The One18's bass response is not as deep as some other monitors and may require a subwoofer
  • The included speaker wires could be a bit longer

Comparisons (according to reviewers)

  • The Amphion One18 has a more natural midrange than the JBL LSR308, while the JBL's midrange is more forward and 'in your face'
  • The JBL LSR308 has a deeper bass response than the Amphion One18

Takeaway: The Amphion One18 provides an accurate and honest sound, especially in the midrange, which translates well to other playback systems. Its precise imaging and comfortable high-end make it a great tool for critical listening and mixing.

How useful are hifi reviews? We consider them useful for three things: (1) Surfacing new products you should demo in person at a dealer. (2) Learning which products reviewers unanimously praise as the best they've ever heard (this means they probably are legitimately great). (3) Identifying a product's unique attributes that satisfy your idiosyncratic needs and tastes. Beyond that, we  discount what reviewers say because they heap praise on everything—rarely being negative for fear of souring relationships with manufacturers. Further, they seldom have more than a couple products on-hand at once, relying on their imperfect memories to compare to past products.

Want to see more similar products?

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