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
- More open and transparent sound with stronger, firmer bass due to a new ultralinear output transformer technique
- Runs Tungsol KT150 with higher plate dissipation than the standard KT120 Eos, meaning a larger window of class A bias
Product Considerations
- The unit weighs 27kg
- The power supply takes up 15x30x20cm
Comparisons (according to reviewers)
- Compared to the Eos, the Eos+ has more open and transparent sound with stronger, firmer bass
Takeaway: The Eos+ has upgraded components for great sound quality. It could be a great choice for anyone looking for a powerful amplifier that delivers a clear and strong sound.
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Manufacturer details
- Output power: 2x150W
- Class of operation: Push-Pull (class AB)
- Tubes complement: 4x KT150 Tungsol, 2x ECC99, 2x 5687
- Inputs: RCA/XLR
- Tubes protect: Acrylic front glass
- Outputs: 4 and 8 ohms
- Input sensitivity: 1.2Vrms
- THD %: 0.03% – 1W/1KHz, 3% – 150W/1KHz
- Frequency bandwidth: 10Hz(-1dB)-100KHz(-1dB)
- S/N Ratio: 82dB
- Input impedance: 100K
- Power consumption: 500VA
- Input voltage: 230V/50Hz -115V/60Hz switchable
- Amplifier Size: 450x350x230mm
- Power supply size: W150 x D300 x H200mm
- Weight: 27kg amplifier + 11kg power supply box
Based on previous work on negative feedback, -6dB reaction has been tuned to provide sound equivalent to a good Single Ended application. Cathode feedback was used as the most musical one. Bass is well controlled, dynamic response is excellent and this amplifier belongs to the very top of its class.
Well designed power supply made as separate unit utilizes 800VA toroidal transformer and C-L-C filter separated for each channel. Output transformers are based on a Double-C core configuration and Solen fast capacitors are used throughout. Adding well thought-out concept to the mix results in a recognizable high quality sound of our amplifiers.
The new modern styling of Trafomatic Audio amplifiers has been extended to this model as well,which makes a perfect sonic and visual fit with your room. An excellent starting point for full immersion in good sound. See and hear for yourself.
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:
- Trafomatic is known for designing and hand-winding its own transformers, enabling precise control over the final sound characteristics of its amplifiers.
- Trafomatic's amplifiers, particularly the Primavera, are designed for tube rolling, providing comprehensive options and improving overall audio experience.
- The brand offers a highly customizable experience, allowing customers to request specific RAL colors and gold or silver knobs/feet, for a personalized aesthetic.
Select products
Evolution Phono One
- Positioning: The entry-level model aimed at basic vinyl playback setups.
- Description: Uses an OP AMP design with separate MM and MC inputs and selectable impedance to ensure low noise performance. Compared to tube-based or high-power models in the lineup, its straightforward design suits smaller rooms and modest budgets with minimal functionality needs.
Tara 30A
- Positioning: A balanced tube preamplifier crafted for refined audio reproduction at a moderate price point.
- Description: Features Emission Labs 30A tubes, dynamic balance adjustment and an extremely low output impedance for precise channel matching. Compared to the entry-level Evolution Phono One, it adds tube warmth and detailed control, though it remains less complex than higher-powered amplifiers like EOS+ or flagship systems.
EOS+ Power Amp
- Positioning: A dual mono power amplifier engineered to deliver high power for demanding speaker systems.
- Description: Uses push-pull design with KT150 tubes and tuned negative as well as cathode feedback, resulting in well-controlled bass and a dynamic response. In contrast to preamplifiers like Tara 30A, it provides substantial power output.
Elysium
- Positioning: A flagship mono-block power amplifier built with state of the art tube circuitry for uncompromised sound quality.
- Description: Uses pure Class A circuits with Eimac 250TL output tubes and a unique direct-coupled transformer setup to extract every subtle detail. Compared to the EOS+ Power Amp which focuses on power output, it offers a more refined sonic character.
Rhapsody
- Positioning: An integrated amplifier representing the highest achievement in valve amplifier design.
- Description: Features 300B valves in a parallel single-ended Class A configuration to produce natural tonality and rich coloration with unified performance. Compared to standalone preamplifiers or power amplifiers, its all-in-one design delivers exceptional technical sophistication.
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Used
Trafomatic
What if you spend more?
Product Strengths
- Highly customizable, allowing users to request specific configurations and tube types
- Offers a wide range of tube rolling options to pinpoint the desired sound signature
- Price-to-performance ratio is excellent, competing with amps costing around $5,000
- Can drive high impedance headphones like ZMF, HD 800, and T1, as well as planars and low ohm headphones with specific tube configurations
- Can sound very good with inexpensive tubes, but can be elevated to a ridiculous performance level with higher end tubes
- There is a HeadFi thread to help with connectivity options
Product Considerations
- Ordering process is unconventional, requiring direct communication through a HeadFi thread
- There is a wait time for builds, potentially around six months
- Tube rolling can become expensive due to the variety of options and the cost of some tubes
Takeaway: The Glenn is a highly customizable amplifier that provides excellent performance for the price, especially for those who enjoy tube rolling and experimenting with different sound signatures. It is a versatile amp that can drive a wide range of headphones, making it a great choice for many audiophiles.
Video review
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Our summary
Product Strengths
- Powerful, able to drive any speaker at any level with ease
- Delivers a new dimension in realism at any volume level, exposing the timbre of bass instruments unlike ever heard before
- Reveals harmonic quality of instruments and voices
Product Considerations
- Heavy, weighing 140lb (63.5kg), requiring assistance for moving and unboxing
- High running temperature (55-65oC across the chassis) and draws 500W from the wall when idle
- When speaker cables are terminated with spade lugs, caution is advised as the posts are close together
- Output is floating—it should not be connected to any loudspeaker with a grounded 'black' terminal
- BAT components take a long time to "break in" (400-500 hours of use)
Takeaway: The BAT REX 500 is a very powerful amplifier that drives speakers with ease and reveals new levels of realism in familiar recordings. It is a must-audition for those seeking reference-level power amplification.
Video review
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Our summary
Product Strengths
- Delivers 350 watts into 2-ohm, 4-ohm, or 8-ohm loads
- The design has a purity that is quite amazing
- Effortless power
- Soundstage is big
- Transparent
Product Considerations
- Not necessarily suitable for pairing with extremely cold sounding, sterile or bright speakers
Comparisons (according to reviewers)
- MC3500 is more open and airy, with base not as hard fisted, compared to Krell KSA 250
- It compares with brands like soulution, big Audio Research, and CH Precision, but at a lower cost
Takeaway: The MC3500 is an impressive amplifier that delivers a natural and pure sound, able to drive almost any speaker. If you're in the market for a McIntosh amp, this is the one that makes music sound pure, simple and unadulterated.
Video review
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Our summary
Product Strengths
- Prodigious bass output and rich tonality, especially for a solid-state design
- Great presence, a black background, and strong resolution playing effortlessly at very high volume levels
- Offers a wide, well-defined soundstage
- Beautifully designed with a luxurious appearance, relatively compact dimensions, and attention to detail in its internal layout
- Reserves of power will comfortably drive a wide range of speakers to high levels
Product Considerations
- Attacks can be slightly soft on some material
- The soundstage, while wide and well-defined, may lack the pinpoint accuracy and layered depth of some reference amplifiers
- Requires support beneath it on carpeted floors to allow sufficient airflow
Comparisons (according to reviewers)
- Vs soulution 511, the soulution 511 was faster and more accurately conveyed bass notes, threw an image with greater accuracy, and was more open on top
Takeaway: The Electrocompaniet AW 300 M is a gutsy and poised monoblock amplifier that delivers lots of power and handles a variety of speakers, giving an excellent listening experience. Its solid build and high performance make it a great choice for those seeking high-end audio quality.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Offers a remarkably smooth, unforced, and natural presentation with a touch of warmth
- Excels in detail retrieval and textured presentation of instruments and vocals, making the music feel alive
- Presents a wide and holographic soundstage, especially when paired with speakers that are already strong in this area
- Demonstrates agility, precision, and clarity, combined with a naturalness that eluded earlier generations of Chord amplifiers
- Scales dynamically and has the ability to punch hard when required
Product Considerations
- Has a minimalist design with just four line-level inputs, lacking features like phono stages, tone controls, headphone outputs, or DAC modules
- Some may find its sonic signature prioritizes articulation over qualities such as richness and authority, potentially sounding thin if partnered poorly
- Balance control has no center indent or marked position
- The polychromatic lighting may be an issue for the color-blind
- Remote operation can be affected by direct sunlight
Comparisons (according to reviewers)
- Vs Rega Elex-R Mk3, the Chord Ultima Integrated delivers undeniably elevated sound in all respects, with greater dimensionality and smoother vocals
- Vs Bryston 7B 3 monoblocks, the Chord Ultima Integrated offers a weightier and more thunderous delivery, especially in the midrange and vocals, with more inner warmth in tone
- Vs Benchmark AHB2, the Chord Ultima Integrated provides a more energetic and fun listening experience, with Thor-like bass impact and overall superior dynamics
- Vs Accuphase E-270, the Chord Ultima Integrated is warmer, rounder, more powerful, and refined, with a more fluid and emotionally engaging performance
Takeaway: The Chord Ultima Integrated is a unique and well-built amplifier that combines a visually pleasing design with a captivating sound, full of detail and dynamic precision. It brings music to life with an engaging and immersive experience, making it a worthy addition to any audiophile's setup.
Video review
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Our Summary
Product Strengths
- Compact size, lightweight, and runs cool compared to traditional high-end amplifiers
- Exceptionally quiet operation, with reviewers noting a complete absence of hum or buzz
- Delivers a clean, crisp, and neutral sound signature without added coloration
- Upgradeable design, allowing users to update the amplifier with new GaN modules as technology evolves
- Produces a Single Ended Triode-like midrange and top end
Product Considerations
- The polished finish is a fingerprint magnet, requiring the use of gloves for handling
Comparisons (according to reviewers)
- Vs AGD Audion MKIII: The Duets offer a cleaner and more refined sound with improved bass and greater immediacy and snap compared to the Audion MKIII
- Vs Daniel Hertz Maria: The AGD Duets seem to have a little more inner resolution
- Vs Pass Labs X250.8: The AGD Duets performed to a higher level
- Vs Peachtree GaN 1/VTV GaN amps: AGD amps seem to be on another level in regards to design, and the sound is more refined and beautiful
- Vs Aavik U-150, Luxman 595, Yamaha A-S 3200, Axxess Forte 1, Line Magnetic 219ia: The AGD Duets performed to a higher level
Takeaway: The AGD Duet amplifiers offer a blend of cutting-edge technology, exceptional sound quality, and user-friendly design. They are a great option for those seeking a high-end audio experience in a compact and energy-efficient package.
Video review
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Our Summary
Product Strengths
- Known for combining the musicality of tube amplifiers with the precision and power of solid-state amplifiers.
- It provides a transparent sound with steel control, without the electronic 'shine' associated with transistor amplifiers.
- Exceptional bass performance, described as deep, explosive, and completely controlled.
- Homogeneous frequency range, offering a very high degree of transparency and control.
- Offers an ability to resolve even the finest musically significant details.
Product Considerations
- Requires a substantial amount of space due to its multi-component design.
- The sound offered might be 'too beautiful' for some listeners, as it is not 'brutal' or 'terse' enough.
- Requires care in using its switches to avoid shutdowns.
- Some reviewers note it was 'dark sounding' on the highs, though it did not lack information.
Comparisons (according to reviewers)
- Compared to Quad ESL loudspeakers, it surpasses the musicality and clarity achieved with many tube amps, rivaling even high-end options like Lamm Industries ML2.2 and Miyajima Laboratory 2010.
- The ASR has better bass and is more transparent than MBL, however, it lacks the grace that MBL offers.
- Compared to Rogue 180W monoblocks, the ASR Emitter II delivers better bass.
- The ASR Emitter II has slightly better bass control than Manley Neoclassic 500, but the Neoclassic 500 has a more marvelous style of fiddling.
- Compared to Edge and Audio Research, the ASR is darker sounding.
Takeaway: The ASR Emitter II Exclusive offers a combination of tube-like warmth and solid-state precision, making the listening experience a very involving one. It provides exceptional control and detail across the entire frequency range, making it a great choice for audiophiles.
Video review
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Our Summary
Product Strengths
- Delivers power while handling subtlety and fine detail with aplomb
- Presents an engaging and naturally organic soundstage
- Offers switchable Ultralinear and Triode tube configurations
- Hand-wired, hand-soldered, and hand-assembled
- The top end is silky, resolved, and decent, resulting in no listening fatigue
Product Considerations
- The bass is not that punchy as with the best high-end amplifiers
- The amplifier can be demanding towards the acoustics of the room due to its heavy-on-bottom balance
- Limited power handling that does not allow for playing too loud
- The 80S sounds more homogenous, although the listening is rewarding and entertaining
- Ensure existing speakers will work with the Reference 80S to satisfaction before purchase
Comparisons (according to reviewers)
- Vs Simaudio Moon 860A v2 power amplifier, the voice of Hana was warmer and velvetier through the Audio Research—a bit more human for my ears—although the sound was slightly less transparent and less controlled
Takeaway: The Audio Research Reference 80S is a tube power amplifier that delivers precision and subtlety. If high-end audio is desired and a lot of power is not necessary, the Reference 80S could be a good fit for a listening space.
Video review
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Our Summary
Product Strengths
- Uses Moon's new distortion-canceling amplifier circuit, which is incredibly precise.
- Runs as efficiently as possible, yet as close as possible to class A.
- Capable of playing at any volume level, from a whisper to a scream.
- Delivers 200 watts per channel.
- Delivers good stereo, with very powerful dynamic range.
Product Considerations
- Only available in a two-tone 'panda' color scheme (silver sides with a black front panel) at the moment, though this may change with demand.
- Existing Moon aluminum bridges for stacking components are not compatible with this model.
- Moving the 35kg power amp can be a bit of a struggle.
- Although it has a lot of heat sinking, and it does get warm, it's not pulling a huge amount of energy out of the wall at any given volume level.
Comparisons (according to reviewers)
- Vs Hegel H20—the 761 has additional refinement, additional resolution, and is much smoother, but doesn't lose any detail in the music.
Takeaway: The 761 is a very capable amplifier that gives the potential to drive at any level and has the power to play precise, fine-sounding music. It can be used in bridged mode and works in balanced and single-ended configurations.
Video review
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