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.
Product Strengths
- Auto-bias design removes the need for manual tube biasing
- Adjustable output transformer strapping is designed to work with speakers rated from 1 to 16 ohms
- Low output impedance for a tube amplifier helps drive speakers with complex impedance curves
- Output transformers come with lifetime warranties
- Jadis cautions users to always turn on their preamplifiers before turning on the amps, and to reverse that procedure to turn the amps off
Product Considerations
- Insufficient break-in period can affect sound quality
- The review setup may not have been optimal, using a DAC directly without a preamp, potentially limiting the amp's full capabilities
- Pairing with speakers that have a significant impedance drop in the bass region may not yield the best bass performance
Takeaway: The Jadis JA200 Mk.II offers a classic tube sound with modern conveniences like auto-biasing and adjustable impedance matching, making it easier to integrate into a high-end system. With its robust design and lifetime warranty on the output transformers, this amp promises years of musical enjoyment.
All
JA200 MkII
reviews
Manufacturer details
- Type: Monoblock pure class A power amplifier
- Bias: Automatic
- Power: 160 W
- Bandwidth: 20Hz to 30 kHz @ -3dB
- Sensibility: 1.2 V
- Number of blocks: 4
- Tubes: POWER TUBES X 20, ECC82/12AU7 X 2, ECC83/12AX7 X 2
- Dimensions: 580 x 260 x 240 each block
- Weight: 130Kg
- Consumption: 500 VA per channel
Capable of 160 watts per channel in pure Class A and 200W with the KT150, its unique power capability and dynamic behaviour are combined for the first time in vacuum-tube amplifier history, with the ultra low distortion and transparency of the best low-power exotic Class A designs.
Its low frequency performance is unequalled. Built with the same standard as the now famous JA80, the JA200 shares its sound consistency and unmatched reliability year after year.
The output stage of the JA200 uses 10 KT88 on each mono amp. For thermal dissipation reasons, the JA200 is built on four chassis : two amplifiers and two power supplies. Each chassis is the size of a JA80 mono amp.
The JA200 will take you where very few have gone before; 160 watts of pure class A power. This four box set of ultimate musicality features two mono-block amplifiers each with its own separate power supply. Probably the last amp you'll ever buy...
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:
- Jadis amplifiers are characterized by their signature aesthetic, featuring polished stainless steel chassis with brass-colored accents, creating a distinctive and luxurious appearance.
- They meticulously hand-wind and resin-pot their own output transformers, considered central to the brand's sonic signature and speaker-matching capabilities, and offer a lifetime warranty on them.
- The brand prioritizes a natural and engaging musical presentation, focusing on harmonic richness, tonal color, and conveying the emotion and intent behind recordings.
- Jadis maintains a Class A push-pull design philosophy across its amplifier range, emphasizing low distortion and maximizing musicality, with a limited use of negative feedback.
Select products
SE300B
- Positioning: The entry-level high-fidelity amplifier in the Jadis lineup.
- Description: Brings music to life with its 10W pure class A single-ended design. Features automatic bias and a tube power supply, offering unique warmth and transparency compared to the more powerful PA100, which is better suited for larger rooms and higher power needs.
PA70
- Positioning: The mid-range stereo power amplifier in the Jadis lineup.
- Description: Offers a compact design with 50W per channel in class A. Its automatic bias and use of KT170 tubes provide a balanced tonal quality, distinguishing it from the SE300B's more intimate sound and the PA100's higher power output.
SE845 NEC
- Positioning: The high-end monoblock amplifier in the Jadis lineup.
- Description: Delivers 40W per channel in pure class A, offering detailed and musical sound with its push/pull configuration. Provides more power and a broader soundstage than the SE300B.
JA500 MKII
- Positioning: The flagship amplifier in the Jadis lineup.
- Description: Delivers a groundbreaking 300W per channel with a separate power supply, providing unmatched power and control. It is ideal for the most demanding audio setups and large spaces, offering more power and sophistication than any other model in the lineup, including the JA80 MKII.
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Used
Jadis
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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
Klimax Solo 800 as a whole is the epitome of efficient, consistent, and accurate circuitry design. Our unique combination of digital and analogue expertise has allowed us to optimise and linearise every internal stage of the amplifier to consistently produce exceedingly high performance.
Our summary
Product Strengths
- Delivers a complete and unabridged rendition of music, offering a sense of authority and positively influencing the sound
- Presents music as a tightly unified whole, creating a singular event rather than a collection of individual sounds
- Offers beautifully balanced and poised sound across the entire frequency range, from deep bass to detailed highs
- Maintains steady output voltage regardless of changes in load, defying mains input variations, thanks to the Utopik power supply
- The Adaptive Bias Control (ABC) technology establishes and adjusts bias current in real time
Product Considerations
- The high price dictates that all other system components (source, pre-amplification, speakers, supports) need to be of similarly high quality and expense
Takeaway: The Linn Klimax Solo 800 is an uncompromising amplifier that allows one to hear their music in a new light by delivering a complete picture of the sound. It offers exceptional clarity, balance, and control over the music signal.
Video review
Our take on the brand
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The all new TIDAL Ferios G2. We have pushed the concept of the first Ferios power amplifier to its extreme and developed an all new power supply with a true power regulation. Thus, the TIDAL Ferios mono amplifier board is certain for all practical means and purposes to be supplied with never failing power reserves and a lavish feed of clean current that will drive every imaginable speaker with ease. The generous supply of additional power is merely a welcome byproduct, really. The real goal was the absolute relaxation with which the Ferios performs, to the extent where any attempted description of sound attributes becomes meaningless. The Ferios sets simply a new benchmark over the former award winning generation.
Our summary
Product Strengths
- Transparent and uncolored
- Exceptional casework and styling
- Ample power without muscularity becoming the product's defining attribute
- Utterly effortless and transparent magnification of the electrical impulse
- Allows a listener to devote their psychic energy to making an emotional connection to music
- Only has balanced inputs
Product Considerations
- Only has balanced inputs
Takeaway: The Ferios monoblock power amplifiers are some of the best electronics available, combining immediacy, transparency, and tonal beauty. Its ability to effortlessly resolve complex arrangements makes it a worthwhile choice for serious audiophiles.
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
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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
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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
- 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
Our Summary
Product Strengths
- Sound is better lit than previous Grandioso series, with more color and brilliance
- More natural and realistic sound
- Smooth, captivating midrange that produces no listening fatigue
- Fine detail is exposed due to its somewhat laid-back presentation
- Incredible bass
Product Considerations
- Takes days to warm-up and sound its best
Takeaway: The Esoteric Grandioso M1X is a monoblock amplifier that delivers a burnished sound effortlessly, making it good for audiophiles. It offers a natural sound with impressive bass and a smooth midrange.
Video review
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