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
Astra Dual
reviews
Manufacturer details
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:
- Devialet products stand out with their uniquely futuristic, often spherical designs, setting them apart from conventional speakers.
- The brand incorporates proprietary technologies like ADH amplification, SAM speaker matching, and HBI bass implosion, which contribute to exceptional sound quality and robust bass response.
- The brand integrates seamlessly with modern streaming ecosystems, offering compatibility with Apple AirPlay 2 and Spotify Connect, and has recently updated its products to incorporate Roon Ready status.
Select products
Phantom II:
- Positioning: The entry-level model in the Devialet Phantom lineup.
- Description: Features a compact design, making it ideal for small rooms or portable use. It features a 400-watt amplifier, which is less powerful than the Phantom I's 1100 watts, but still delivers impressive sound quality for its size. This model is more budget-friendly compared to the Phantom I.
Phantom I:
- Positioning: Positioned as a high-end model in the Devialet lineup, offering superior sound quality and power.
- Description: Stands out with its powerful 1100-watt amplifier, providing a more robust sound experience compared to the Phantom II's 400 watts. It is equipped with Devialet's ADH technology, which combines analog and digital amplification.
Phantom Theater:
- Positioning: Designed for home cinema setups, offering a premium audio experience with surround sound capabilities.
- Description: Notable for its Dolby Atmos support, providing an immersive audio experience that surpasses the stereo capabilities of the Phantom I and II. It allows for flexible configurations, accommodating multiple Phantom I and II speakers to create a tailored home theater system.
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?
What's your approach to customer support?
What are your favorite tracks for showcasing the strength of your products?
What other products pair best with yours?
Used
Devialet
What if you spend more?
Our summary
Product Strengths
- Visually stylish, luxurious, well-built, and enjoyable to look at
- Offers extensive functionality including preamp gain adjustment, channel balance, mute, and display brightness settings
- Combines qualities of both tube and transistor designs, having transparency and magical realism with easy power
- Produces a clean, succinct, holographic, and exciting sound, with great dynamic capabilities
- Exceptionally well-balanced frequency response, fitting between the warmth and energetic explicitness of other amps
Product Considerations
- Massive and heavy, making it not easy to move around
- Single ended inputs only with no balanced inputs
- The vast disparity between the damping factors—synergy can vary with speakers
Comparisons (according to reviewers)
- Aavik I-880 was leaner, more illuminated, outlined and energized, spatially grander, less intimate and occupied via shorter key sound sources, compared to Trilogy 915R preamp and twin 995R mono amps
- The I-880 was internally juicy, admirably outlined, enjoyably angry, instantaneous, and powerful in the lower end range, where the twin 995Rs were boomier, fuzzier, slower and sensibly shallower on the very bottom
Takeaway: The Aavik I-880 is a high-performing, visually stunning integrated amplifier that brings music to life with both elegance and power. This amplifier is designed to be a centerpiece, both sonically and aesthetically, in any high-end audio system.
Video review
Our take on the brand
EMM Labs is proud to present its latest innovation in audio technology: the MTRS Stereo Amplifier. The MTRS is a 400W Stereo Class A/B solid-state amplifier. The MTRS is able to drive the most severe loads with no overall feedback, using Ed's completely re-designed high current Meitner Power Driver. The MTRS can handle any speaker load with ease, delivering high power, low distortion and wide bandwidth.
Our summary
Product Strengths
- Musically complete, providing sound that is honest, true, thrilling, heart-warming, and emotionally rewarding
- Able to drive difficult speaker loads with complex impedances and very low overall impedance
- Offers real-time monitoring and automatic protection
- The design results in musical triumph of transparency, nuance and dynamics
- Ed Meitner is a respected designer
Product Considerations
- During a test of maximum power into 2 ohms with one channel driven, the amplifier went into standby mode
- The size (544mm wide and 584mm deep) and weight (82kg) of the MTRS may make it difficult to fit into a hifi rack and move
- The input selector buttons on the partnering PRE preamplifier can be tricky to use
- The down-firing status light colors may not match the manual's description
- Bass flabbiness was noted around 68-77Hz due to room node exacerbation
Comparisons (according to reviewers)
- Compared to monoblocks, the MTRS may not deliver as wide a soundstage or as breathtaking dynamic contrasts
- The partnering PRE preamplifier is as close to the proverbial 'straight wire with gain' as has been seen, heard and measured in HFN for many years
Takeaway: The EMM Labs MTRS amplifier is a musically rewarding and transparent choice, especially when paired with its PRE preamplifier, and can drive difficult speaker loads well. The MTRS offers sophisticated protection and is built with exacting engineering.
Video review
Our take on the brand
Our summary
Product Strengths
- Very clean and noise-free output signal provides a stable soundstage with a very black background at any sound level
- Exceptional bass control and depth delivers a powerful and tight bass response that underpins the overall musical experience
- Offers flexibility with mono, stereo, and bi-amping operating modes, allowing for system upgrades and configuration changes
- Dynamic and fast, reacting instantaneously to the signal it receives and delivering power and subtlety where needed
- Continues the company's aesthetic with the massive perspex front panel covering
Product Considerations
- Speaker binding posts may not be compatible with all types of speaker cable terminations, specifically thicker spades
- The control for the illuminated 'E' on the front is located underneath the amp and may be difficult to access
- May be more 'laid-back', which some may interpret as lacking ultimate transparency or strict neutrality
- Provides only for XLR balanced inputs, though Electrocompaniet can provide appropriate high-quality adaptors for RCA connectors
Comparisons (according to reviewers)
- Brings another level of control and depth to everything, compared to Totaldac Amp 1
- The memorable blackness of bass pinged recognition, compared to Kinki Studio EX-B7 monos
Takeaway: The Electrocompaniet AW 800 M is a powerful and versatile amplifier known for its exceptional bass control, clean output, and dynamic performance. It is a great choice for audiophiles seeking a high-quality listening experience with flexibility for system configuration.
Video review
Our take on the brand
The Momentum S250 MxV stereo amplifier delivers the extraordinary sound quality of the Momentum M400 MxV monoblock in a more affordable stereo design. The circuit topology and construction of the stereo amplifier mirror those of the monoblock, using the same ultra-efficient copper heat sinks with venturi cooling, the same 1% metal-film resistors, the same 69 MHz output transistors and the same fully complementary balanced configuration. The result is audio fidelity equaled by no other amplifier—except, of course, the Momentum M400 MxV monoblock itself.
The leading compliment to the Momentum S250 MxV Stereo is the Momentum HD Preamplifier, creating a harmony worthy of any aficionado.
The Momentum S250 MxV models feature techniques and topologies initially developed and implemented in the Relentless Mono Amplifier. This fullest expression of the Momentum circuitry is reflected in the new model name, MxV. Those with a physics background will recognize that MxV or Mass times Velocity is the equation for Momentum.
Our summary
Product Strengths
- Incredibly resolving, with plenty of detail
- Perfectly controlled, 'wide' sound in terms of dynamics and panorama
- A quieter background brings forward a level of detail
- A clearly structured form, with symmetrical divisions and repetitions
- Inspired by the Relentless Epic amplifier series
Product Considerations
- Speaker jacks accept only spades and bare wires, and connecting spades from the top bends the cable significantly
- Components on the rear panel are placed close to each other and not particularly convenient to use
Takeaway: The Momentum S250 MxV amplifier delivers an immersive and detailed listening experience, making it great for those who enjoy actively listening to music. It brings out the best in loudspeakers, offering tremendous dynamics and a wide soundstage.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Ample power with minimal distortion
- Audionet's ULA (Ultra-Linear-Amplifier) technology, originally developed for medical engineering
- Impressive dynamic prowess and the ability to plumb the hidden depths of CDs and LPs
- Subtle musical and instrumental details come through cleanly and coherently, without compromising life-likeness of tone colors and harmonic expression
- Exceptional bass reproduction, with a rich, detailed, and uniform low end
Product Considerations
- Positive and negative speaker terminals are close together, requiring caution when connecting speaker cables
- Balanced input use involves an op-amp, which some believe impacts sound quality, single-ended inputs are preferred by some
- A preamp should be used to get the best sound from these amplifiers
- Display text changes locations randomly, which some may find distracting
Comparisons (according to reviewers)
- The Burmester sounded cleaner, airier, and more revealing, but could not quite compete with the AMP II MAX in authority over the bass frequencies and in blackness of the background
- The Pass Labs was tonally rich and pleasurably soft, plus the amp gave an extraordinarily punchy presentation, in that it bettered the performance of the AMP II MAXes, on the other hand, it was rather general in the organization of the soundstage and the background wasn't quite as black as with the AMP II MAXes
- Plinius shone in resolution, as well as delivered exceptionally dimensional soundstage and very neutral overall sound, especially in Class A mode, however, it did not have the same punch as the AMP II MAXes, and the sound wasn't equally gentle
- The McIntosh MC-501 delivered a richer and warmer sound, but with less power and extension than the AMP II MAX
Takeaway: The Audionet Max monoblocks offer a powerful and refined listening experience, making music sound engaging and detailed. Their ability to control speakers and reveal nuances in recordings makes them a great choice for serious audiophiles.
Video review
Our take on the brand
Our Summary
Product Strengths
- Neutral and grain-free sound, not like typical solid-state or tube amplifiers.
- Powerful and articulate bass, seamless and smooth mids, and extended, non-harsh highs.
- Exceptional build quality and a luxurious feel with immaculate laser-cut detailing and silver anodizing.
Product Considerations
- The glitzy appearance might be divisive.
- High-quality source components and speakers are required to perform at its best.
- The unit is large (almost 50cm wide) and very heavy (32kg), requiring a sturdy rack and careful handling during setup.
Takeaway: The Burmester 911 mk.3 provides exceptionally intricate, powerful, and dynamic sound, making it a very refined amplifier that is a treat for your ears. It is a top-performing amplifier made with great craftsmanship and build quality.
Video review
Our take on the brand
Our Summary
Product Strengths
- Incredibly nimble, with every detail highlighted, providing an extra layer of resolution
- Delivers all of the detail and clarity without the traditional fatigue
- The balanced input transformer properly sums the positive and negative legs of the balanced signal, and in so doing retains much of the benefits that you normally achieve with fully balanced amps—noise rejection
- The distortion numbers are exceptional for a tube amplifier
- Compatibility with nearly every commercially available speaker, due to the support of three impedances (4 ohms, 8 ohms, and 16 ohms), and output power exceeding 60 watts with KT88s, and 80 watts with KT150s
Product Considerations
- There are no modern reproductions of the 12BY7A, requiring matched pairs to run the amplifiers
- The bias is fixed—it's selectable between settings, but dialing in the distortion could not be simplified further
- Heavy at nearly 100 lbs each, as there's a lot of iron in both the transformers and the chassis work
- A hint of tube noise was present in one channel when no music was playing, likely specific to the tubes used
- Not a wise choice to any planer but complex crossovers and difficult loads have not compressed the amp in testing
Comparisons (according to reviewers)
- Vs ampsandsound Zion Monos: The Arch Monos are more neutral, faster, and provide an extra layer of resolution, compared to the richer and more harmonic sound of the Zions
- Vs TAD: The Arch is clean, powerful, and has many characteristics of very good solid-state amp, though the TAD approach was similarly neutral in many ways, albeit with a lightning quickness that the Arch did not have
Takeaway: The ampsandsound Arch Monoblock amplifiers are a technically proficient and beautifully built amplifier that delivers exceptional detail and clarity without fatigue. If one wants a vintage but modern sound, the Arch Monoblocks could be a good choice.
Video review
Our take on the brand
Our Summary
Product Strengths
- Preserves the sonic signature of tube electronics, while being able to drive a wider range of loudspeakers
- Has astonishing liquidity of timbre, and is utterly grain-free
- Projects a sense of presence that sounds very much like the best SET amplifiers
- Creates a directness of musical expression, fostering an intimacy with the music and performers
- Produces a very warm midrange, and sweet top end
Product Considerations
- Treble was less bright, and open than that of many other amplifiers
- Favors warmth, fullness, and texture in the bass rather than slam and extension
- May not be the most resolving amplifier for the money
Comparisons (according to reviewers)
- The Absolare Hybrid sounded remarkably like the Passion 845 SET, but with deeper bass extension and greater dynamic authority
Takeaway: The Absolare Hybrid Stereo amplifier delivers the emotion of music like an SET amplifier, with the ability to drive a wide variety of loudspeakers. It creates a deep connection with musical meaning.
Video review
Our take on the brand
Our Summary
Product Strengths
- Completely balanced and DC-coupled
- Uses the Class A 'X-Amp' input stage technology from the 159
- Has a high damping factor over the entire frequency range and a very wide, distortion-free Class-A range
- The thermal concept uses 'universal heat pipes' to keep temperatures constant and low, increasing the lifespan of the amplifier
- Signal processing reaches the input signal unaltered via silver cables
Product Considerations
- The Burmester visual aesthetic will not please everyone
- Power needs are consistently overestimated, and this amp has 100Wpc continuous into 8 ohms
- The single-ended RCA inputs are not available on the back panel, unbalanced input requires an adapter
Comparisons (according to reviewers)
- Vs Burmester 911 Mk 3: The 216 adds extra depth, precision, control, and ability to 'wig out' bass, also more reactive and dynamically dynamic
- Vs Burmester 911 Mk 3: The 216 is the more liquid sounding of the two, is more dynamic, has better bass definition and control, a more even sounding treble, a more open midrange, a keener sense of rhythm
Takeaway: The Burmester 216 is a musical chameleon that is carefully and meticulously crafted, it will bring the best out of any genre. Its utter lack of electronic character is a huge plus, making it a worthwhile consideration for any audiophile.
Video review
Our take on the brand
How to buy
Amplifiers
Search all hifi products
Explore our database of 10,000+ new and 25,000+ used hifi products.

























































