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
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
All
Coax Gen2 711 LTD
reviews
Manufacturer details
- Recommended Amplifier Output: 20 - 250 Watt
- Sensitivity: 92 db/W/m
- Impedance: 4 ohms
- Frequency Range: 22 Hz - 50 kHz
- Dimensions: H 46.46" x W 11.02" x D 12.99"
- Weight: 103.5 lbs
- Technology: 2 x 220 mm UHQD woofer, 2 x 220 mm UHQD passive radiators, 1 x C212 Coaxial ribbon
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- Piega speakers are crafted with seamless, extruded aluminum enclosures, designed by Swiss architect Stephan Hürlemann, which minimizes vibrations and resonances.
- They utilize custom-designed Air Motion Transformer (AMT) tweeters, manufactured in-house, known for their clarity, detail, and extended high-frequency response.
- Piega offers a unique Wireless Spatial Sound (WiSa) technology in select models, allowing for cable-free stereo or multi-channel setups without compromising audio quality.
- The brand incorporates Tension Improve Module (TIM) technology, including TIM2 in newer generations, which tensions internal components to further reduce cabinet resonance and improve sonic purity.
Select products
Ace Series
- Positioning: The entry-level lineup in PIEGA's offerings, designed for compact spaces and affordability.
- Description: Features the AMT-1 Air Motion Transformer for detailed sound. Compared to the Premium Series, offers a more compact and budget-friendly option, making it ideal for small rooms or those seeking portability. While it lacks the advanced ribbon technology of the Coax and Master Line Source series, it provides a balanced sound suitable for everyday listening.
Premium Loudspeakers
- Positioning: Sits in the mid-range of PIEGA's lineup, offering a balance of performance and design.
- Description: Known for its elegant design and advanced ribbon tweeter technology, providing clear and precise audio. Features a reinforced aluminum structure that enhances sound clarity, setting it apart from the Ace Series.
Coax Gen2
- Positioning: A high-end offering, positioned just below the flagship Master Line Source series.
- Description: Stands out with its proprietary coaxial ribbon technology, delivering exceptional clarity and balance. Uses advanced TIM2 modules to reduce cabinet vibrations, offering superior sound purity compared to the Premium Series.
Master Line Source Gen2
- Positioning: The flagship series, representing the pinnacle of PIEGA's technological innovation.
- Description: Features innovative Line Source ribbon technology, providing exceptional sound with authentic and coherent sound reproduction. Uses a unique dipole speaker design that fills the space with a coherent cylinder sound wave, surpassing the capabilities of the Coax Gen2.
Our take on the brand
Look inside the brand
Our interview with the brand
What are two key technological innovations or strong opinions that differ you from other brands?
Our ribbon tweeters, especially the coaxial versions used in our Coax and Master Line models, deliver exceptional resolution and spatial imaging. What’s particularly noteworthy is that we have been developing these tweeters entirely in-house for over 40 years – and we still manufacture them by hand at our facility in Horgen, Switzerland. The quality is, in our view, outstanding – not only acoustically, but also in terms of technical precision and minimal unit-to-unit variance.
Our aluminum enclosures, combined with internal damping and sandwich construction, ensure distortion-free performance – even at high volumes – and are a unique feature both acoustically and visually.
What's your approach to customer support?
We generally recommend that customers first reach out to their dealer or national distributor for any questions or issues. These partners are trained and authorized to assist quickly and effectively. In more complex cases – or when customers contact us directly – we are, of course, committed to providing personal and dedicated support.
Additionally, we regularly invite customers to visit our headquarters in Horgen. During these visits – which include a tour of our production and personal consultation – very close relationships have developed, and in some cases, even real friendships have formed. We take pride in maintaining close and reliable contact, even after the purchase.
What are your favorite tracks for showcasing the strength of your products?
- “Queen Mary” – Francine Thirteen: For dynamics and tight bass, excellent at high volume.
- “Liberty” – Anette Askvik: For atmospheric depth and spaciousness.
- “The Headless Horseman” – Bobby Bass: Great for vocals and evaluating seamless transitions between multi-way drivers.
What other products pair best with yours?
We experience excellent synergy with HiFi Rose electronics – both sonically and aesthetically. Setups with T+A or Cambridge Audio also pair beautifully with our speakers. And of course, there are no limits at the high end: just recently, I heard a large Burmester and McIntosh system driving our Coax 811 at a dealer – the result was absolutely stunning.
Used
PIEGA
What if you spend more?
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Our summary
Product Strengths
- Engaging, naturalistic presentation
- The coaxial ribbon midrange and tweeter contribute to vocal transparency and distinctiveness
- Robust bass foundation
- Uncanny lack of cabinet resonance coloration
- Connectivity options...
Product Considerations
- The reviewer had difficulty reattaching the grilles after removing them
- The brushed aluminum finish might suggest an icy sound signature that isn't accurate
Comparisons (according to reviewers)
- The 811s sometimes reminded the reviewer of the Raidho TD3.8s in their sound presentation
Takeaway: The Piega Coax 811 Gen2 speakers offer great vocal transparency and robust bass, making them enjoyable for critical listening. Their engaging and natural sound is worth the investment.
Video review
Our take on the brand
Elegant and powerful, our BXT turns any pair of Kii THREE into unrivaled floor-standing speakers.
Our summary
Product Strengths
- When combined with the BXT module, the system delivers tight, dynamic, and nuanced bass reproduction
- The addition of the BXT allows the system to reveal subtle details in the lower frequencies that are typically missed
- The BXT system offers a balanced sound, with the midrange frequencies benefiting from the addition of the BXT module
- Are relieved of some bass duties, letting them focus more on the mids
- The combination with the BXT module creates a cardioid dispersion pattern, reducing reflections from side and rear walls—minimizing the influence of room acoustics
- Ease of use is another strength of the concept
Product Considerations
- Some perceive it as sounding 'too digital' or 'too analytical' on its own, lacking the warmth of other speakers, but the BXT module helps to address this
- The display on the Kii Control is considered small, making it difficult to read in poor lighting conditions
Comparisons (according to reviewers)
- Versus ATC speakers, ATC speakers have a warmer, more colorful sound
Takeaway: The system, especially when paired with the BXT module, delivers exceptional sound quality with deep, controlled bass and reduced room interaction. For those wanting a system with great clarity and power, this could be a good pick.
Video review
Our take on the brand
Our Reference range demonstrates the very best that can be achieved in accuracy and musicality. We are honored that these models are some of the most awarded loudspeakers in the world. They combine advanced materials with cutting edge science and engineering. They are designed without compromise, with the singular aim of transporting listeners into the heart of the music.
Carmel 3 delivers the highest accuracy and musicality possible from a compact two-channel loudspeaker. We have applied many of our technologies from the XV, Sonja and Hailey to a compact form factor that is compatible with any room. Carmel 3 throws a huge sound-stage with effortless detail. Incredible delicacy is combined with huge power and authority.
The Reference speakers are structured from high-grade aerospace aluminum, machined in-house to an incredible precision. The speakers are meticulously hand-built by experts in our Colorado workshop. The Reference 3 models include new technologies and design innovations based on novel theoretical models, detailed multi-domain simulations and thousands of hours of listening. The end result: loudspeakers which convey every nuance of emotion, each musical cue from the tiniest microdetail to the visceral impact of the most thunderous crescendo.
An entirely new, hybrid Lattice tweeter uses a novel airframe in a specially-selected aerospace alloy, machined by YG Acoustics. It delivers exceptionally low distortion over a huge bandwidth, with wide angular dispersion to support a large sweet-spot. Groundbreaking, third-generation Ultracoherent crossovers apply a deep understanding from simulation to deliver performance never before possible. Our BilletCore drivers use advanced motors and cones machined in-house from solid billet, offering some of the highest performance and lowest distortion in any driver available today.
Our summary
Product Strengths
- Exceptional build quality with precision-machined aluminum alloy cabinets minimizing resonances
- Striking dynamic punch and surprising low-end power for its size, with tight, controlled bass
- Presents a vivid, lifelike midrange and highs with extraordinary detail, scalpel-sharp resolution, and refinement
- Wide dispersion from the tweeter leads to seamless integration and a larger listening sweet spot
- Tonally balanced with a pleasing, slightly colored sound that avoids harshness, making it versatile across genres
Product Considerations
- Can be ultra-fussy about recording and system quality, highlighting deficiencies in less-than-perfect recordings
- Requires high-quality partnering equipment to achieve peak performance and reveal its capabilities fully
- While not particularly difficult to drive, it benefits from an amplifier with plenty of muscle
Comparisons (according to reviewers)
- The Carmel 3 surpasses the Magico S1MK2 as an absolute favorite two-way speaker
- The Carmel 3 is more revealing of recording flaws, while the Audiovector R 6 Arreté smooths over some imperfections
- Rivals such as Wilson Benesch reveal at least as much as the Carmel 3, including the odd hard edge to sound, but don't focus on it—YG seems to want to highlight every deficiency rather than give a more balanced view of the recording
Takeaway: The Carmel 3 is a compact yet powerful speaker that delivers exceptional detail and dynamic sound, making it a great fit for audiophiles who want a high-end listening experience in small- to medium-sized rooms. Its ability to reveal the nuances in music makes listening sessions consistently engaging and enjoyable.
Video review
Our take on the brand
Product Strengths
- Exceptional build quality with meticulous sanding, polishing, and assembly
- High level of detail reproduction with a clean and uncolored treble, thanks to the diamond tweeter
- Stable and efficient design with a wide frequency range and high sensitivity
- Iconic design with a teardrop-shaped cabinet to minimize diffraction and internal Matrix skeleton to reduce resonances
- Delivers music with extremely low distortion, allowing complex passages to breathe freely
Product Considerations
- Wheels underneath may mark parquet floors
- May lack some punch and dynamics in the mid-bass for some listeners
- Setup can benefit from careful physical adjustments for optimal performance
- Grills may be compelling as toys for young children
Comparisons (according to reviewers)
- The 802 D4 is more musically compelling than the 802 D3
- The 802 D4 delivers more accuracy, especially in the mids and highs, than the 800 D2/D3
- The 802 D4 has an advantage in airiness, transparency and resolution, though the KEF Blade Two Meta has more brutal dynamics
- The 802 D4 has less exaggerated sibilance, though the Focal Sopra No3 is more powerful in the midrange
Takeaway: The 802 D4 is an ultra high-end speaker that combines advanced technology and top-shelf materials, delivering exceptional detail and a clean soundstage for an immersive listening experience. It is a speaker that may fill the soul with music.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Impressive build quality with all-aluminum cabinets
- High sensitivity of 93dB, making them easy to drive with a variety of amplifiers
- Tremendous dynamics
- Bass that others close in size could not dream of providing
- Clean, dynamic, and sophisticated sound with warmth and emotion, and a well-balanced tonality
Product Considerations
- Very heavy at 100 pounds each
- Do not come with grilles
- Might not be as stable as some competitor speakers, even with the feet installed
- Brutally simple and minimalist design might not appeal to everyone
Comparisons (according to reviewers)
- Vs Bowers & Wilkins 804 D4: Both are open-sounding, dynamic and engaging, but the Stenheim Alumine Two.Five has punchier bass
- Vs Magico A3: Comparable (perhaps a small increment better) dynamics, but are more expensive overall
Takeaway: The Stenheim Alumine Two.Five is a high-performance speaker that delivers evolved musical resolution and can fit into smaller spaces. It is easy to drive and makes the music important by getting out of the way.
Video review
Our take on the brand
Our Summary
Product Strengths
- The revised Hagen2 is purpose-tuned as part of the Alberich2 system, which improves the sound
- Ripol subs are faster and better tuned than other available subs
- Compact double decker packs the aces on bandwidth, LF control, and cosmetic footprint
- Physical separation of bass bin from light-coned main driver
- Dedicated bass volume control and adjustable filter hinge for in-room tonal balance
Product Considerations
- Client complained of the total cost when added to Hagen2 pair
Comparisons (according to reviewers)
- Alberich2 is head-on competitive with Cube Audio's Nenuphar v2, packs the aces on bandwidth, LF control, and cosmetic footprint
Takeaway: The ALBERICH2, when combined with the Hagen2, creates a purpose-tuned speaker system that improves the sound. The ability to adjust bass volume and filter settings allows for tonal balance, and its size is compact for its class.
Video review
Our take on the brand
Our Summary
Product Strengths
- Most affordable way into the true 800 series form factor, with the solid aluminum turbine head and the fully curved matrix-braced cabinet
- Features a one-inch diamond dome tweeter, which is a standout strength
- Midrange and vocal region from the Bowers favor a leaner, more technically accurate sound, going for outright clarity, and vocals sound particularly clear and clean
- Bases have casters integrated or built into them, making them easy speakers to move around for optimal positioning, and integrated spikes can then be used to securely position them
- Show-stoppingly gorgeous and sound simply fantastic
Product Considerations
- A much fussier speaker in every regard and require more thought and work to get the sound balance right
- Possible to come across maybe a little bit too lively in the treble
- Amplifier power, quality, and capability is hugely influential—hugely important for these speakers
- Due to their revealing nature, they don't play particularly well with poorer recordings such as metal and older rock
- Tweeter can get fairly harsh when the volume is turned to the extreme, pushing 90+ db for louder music
Comparisons (according to reviewers)
- Bowers & Wilkins are a much fussier speaker in every regard than the Mission 770
- Paradigm Persona 5H is a little more "liquid" sounding
- Wilson Audio SabrinaX's finish is superior to that of the Bowers & Wilkins, dynamic, easy to drive, with a very familiar and very resolute sound
- Bowers & Wilkins 803 D4s are refined like an Aston Martin, and Tekton Ulfberhts are more like a Corvette C8
- Bowers & Wilkins 805D4 lacks the midrange prowess that the 803 has, and will most definitely need a subwoofer for even mild extension into bass
Takeaway: The 803 D4 speakers offer a fantastic listening experience with clear vocals and a grand soundstage, making music more engaging. They are an investment that can potentially improve over a long period of time through system upgrades and continued optimization.
Video review
Our take on the brand
Our Summary
Product Strengths
- Delivers a large, detailed—and scalable—sound that doesn't lose quality at different volumes
- Excels in creating a wide and deep soundstage, enhancing the listening experience with a sense of expansiveness
- Is emotionally engaging, creating a connection between the listener and the music
- The Uni-Q driver with Metamaterial Absorption Technology (MAT) significantly improves sound quality by absorbing unwanted frequencies, resulting in clearer and more accurate high-frequency reproduction
- Offers customisation for bass tuning with different port options to suit various room acoustics
Product Considerations
- Is a large and heavy speaker, requiring a substantial space and stable flooring
- Represents a significant investment
- While generally easy to drive, benefits from high-quality amplification to reveal its full potential
Comparisons (according to reviewers)
- Vs Audiovector R6 Arreté: R6 Arreté sounds extremely weightless and transparent, but doesn't have the same depth of bass as the Reference 5 Meta
- Vs Sonus Faber Serafino Tradition: The Serafino deliver the music nicely wrapped in a warm envelope that's very addictive, while the Reference 5 Meta focuses on detail and transparency
Takeaway:
The KEF Reference 5 Meta is a high-end loudspeaker that provides a detailed, emotionally engaging—and expansive—sound experience. With its advanced technology and customizable features, it is a great option for those looking to invest in a top-tier audio system.
Video review
Our take on the brand
Our Summary
Product Strengths
- ATC designs and builds every drive unit in-house, including voice coils, crossovers, and active amplification, allowing for complete control over every loudspeaker design decision
- In the active version, a more clearly defined soundstage has clearer, more well-defined individual elements, where everything pops out more from the background
- The active version has more energy, drive, and a more vivid overall presentation, resulting in a more tactile, energetic, and higher resolution sound
- The SCM50's woofer has an enviable ability to resolve textures and timbral colors, capably rendering the skins of bass drums, the flutter of tom-toms, or the dark voicing of orchestral bass viols as bows are dragged across their strings
- The SCM50 has an almost eerie immediacy that seems to glean the intent of the musician before their bow touches the string or a note escapes their lips, making piano reproduction breathtaking
- Connectivity is limited to a single XLR input, which may require adapters for single-ended sources
Product Considerations
- The active version is heavier than the passive version
- The owner must manually turn each speaker on and off, as there is no trigger or auto startup circuit
- The active version may pose challenges for owners of subwoofers needing high-level wiring connections, although workarounds exist
- Careful attention must be paid to positioning a pair of SCM50s, as the full-bandwidth—ported design means that placing them too close to a boundary wall will result in bass bloom
Comparisons (according to reviewers)
- SCM50 wins hands down over PureAudioProject Duet 15s for resolution, clarity, and dynamic shading
- The active version excels over the passive in solidity of soundstage, neutrality, and ultimate detail retrieval
Takeaway: The ATC SCM50 offers exceptional sound quality, whether in its active or passive configuration, thanks to ATC's engineering and in-house design. The ATC SCM50 is a choice that will bring musical joy for years to come.
Video review
Our take on the brand
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