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
- Employs Pathos InPoL Technology/Dual InPoL Circuit, aiming for Pure Class A amplification and a warm, natural sound
- Delivers substantial power: 100 watts per channel into 8 ohms, and 170 watts per channel into 4 ohms
- Uses high-quality components and a power supply based on 1,800 VA toroidal transformers per channel
- Features a tube preamp (using Tun-Sol ECC803 and 6H30 Sovtek tubes) and MOSFETs in the power amplifier
Product Considerations
- The amplifier is large (540 x 800 x 300 mm) and very heavy (100 kg), possibly making it difficult to integrate into standard hifi setups
Takeaway: The InPoL is engineered to deliver a natural sound and substantial power, using high-quality components and a sophisticated design. This could be a compelling option for individuals seeking a high-end amplifier.
All
InPoL Legacy
reviews
Manufacturer details
- Type: Reference stereo integrated amplifier
- Tubes: 4 x ECC803 tung-sol 2 X 6H30 Sovtek
- Output power: 2 x 100W@ 8 Ohm
- Frequency response: 2Hz – 100KHz ± 0.5db
- Max input voltage: 10VRMS
- Input sensitivity: 700mVRMS
- THD: 0,02% @1W 1KHz 0,5% @100W 1KHz
- S/N Ratio: > 97dB
- Gain: 31 db Unbalanced 25 db Balanced
- Analog inputs: 3 balanced XRL line, 3 unbalanced RCA line
- Dimensions: 500mm (W) X 880 (D) X 300mm (H)
- Net Weight: 140Kg
Like the entire InPoL Legacy structure, the tube power supply is separate, with a toroidal transformer for each channel. The tubes are in a totem pull configuration, using 2 x ECC803s TungSol and 1 x 6H30 per channel. All power supplies are stabilized, filtered, and dissipated The excellent quality wiring is shielded.
The 100-step passive volume is adjusted by low-noise precision resistors using insulated relay switches. Input and output connections are Neutrik and WBT. InPoL Legacy weighs 140 kg.
To let move and install it easily, Pathos engineers designed a special packaging with wheels. InPoL Legacy is provided also of a set of brackets which eases to lift the amplifier and put it on the cabinet. Since not all cabinets can support such weight, Pathos designed a dedicated cabinet for InPoL Legacy.
InPoL Legacy, the ultimate Pathos integrated amplifier.
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:
- Pathos products, handmade in Italy, feature a distinct aesthetic that blends modern and classic design elements, utilizing materials like aluminum and wood in visually striking ways.
- The brand's patented InPol (Inseguitore Pompa Lineare) technology combines the sonic characteristics of tubes and solid-state, aiming for a natural and engaging musical reproduction.
Select products
Inpol2 MKII
- Positioning: Positioned as an evolution of the classic Inpol2, offering enhanced power and connectivity.
- Description: Features increased power output on 4Ω loads and improved power supply. Its dual-mono configuration and optional HiDac Mk2 integration for digital sources set it apart from the T.T., which lacks these features. This model is suitable for users who prioritize digital connectivity and a balanced soundstage without needing the highest power output.
T.T.
- Positioning: A classic model in the Pathos lineup, known for its unique design and sound signature.
- Description: Features pure Class A operation and absence of feedback, providing a warm and transparent sound that is perfect for small to medium rooms. Unlike the Inpol2 MKII, focuses on simplicity and analog purity.
InPower MK2
- Positioning: Designed for high-end performance, offering significant power and flexibility for advanced setups.
- Description: Delivers 120W output at 8Ω, making it suitable for large rooms and demanding speakers. Its adjustable gain feature allows for precise control in bi-amped systems, a capability not found in the Adrenalin.
Adrenalin
- Positioning: The flagship model, representing the pinnacle of Pathos' InPoL technology.
- Description: Offers a remarkable 200W output in pure Class A, providing exceptional power and fidelity for the most demanding audio setups. Its double InPoL configuration and zero feedback design ensure a pristine soundstage, surpassing the InPower MK2 in raw power and sonic purity.
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?
Pathos stands out for two fundamental elements that represent our identity: technological innovation and design philosophy.
The first is INPOL, our exclusive patented technology: a hybrid circuit that combines the warmth and musicality of tubes with the strength and precision of MOSFETs. The tubes shape the sound in terms of amplitude, offering transparency and naturalness, while the MOSFETs provide the current needed to drive the speakers, working in pure Class A, without distortion or feedback. The result is a dynamic, detailed sound that is incredibly faithful to the original. With the evolution of DOUBLE INPOL, this philosophy reaches higher power and even more refined performance, while maintaining the sonic character that defines us.
The second is our choice to remain true to the essence of sound and the true meaning of “Made in Italy.” Every one of our products is designed and built in-house at our facility in Vicenza: from the electronics to the processing of aluminum and wood, to the painting, every phase is closely overseen by our team with artisanal care and obsessive attention to detail. We don’t just build amplifiers: we create unique objects, designed for those who seek an authentic, thrilling listening experience, without compromise, where beauty, technique, and passion coexist in perfect balance.
What's your approach to customer support?
In general, the ideal procedure is for the end user to contact their retailer or local distributor, who are always the first points of reference. However, it often happens that customers reach out to us directly: depending on the situation, I either direct them to our partner or assist them personally.
What truly matters to us is that the customer feels listened to and taken care of. That’s why, even remotely, I often personally handle support cases: not due to a lack of trust in our distributors – with whom we have excellent relationships – but to show that every customer is important to us. We know that our amplifiers have a value that goes beyond the cost: they represent a passion, a conscious choice, often a dream come true. And those who own them have every right to feel in good hands.
What are your favorite tracks for showcasing the strength of your products?
What other products pair best with yours?
Used
Pathos
What if you spend more?
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Since its introduction in 2022, Apex has been hailed as the finest power amplifier ever created. Critics and connoisseurs have universally praised its combination of shattering power and sublime delicacy; its ability to drive any loudspeaker balanced with unimpeachable tonal neutrality. It has always been Gryphon’s mission to achieve the highest possible audio performance in terms of sheer musicality, transparency and realism. With Apex Mono and Apex Stereo, Gryphon Audio Designs has elevated pure Class A power amplification a titanic leap above what was previously considered possible. Gryphon Apex takes us several significant steps closer in the quest for the most natural and convincing musical illusion.
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Product Strengths
- Delivers lots of current due to a new 2000VA toroidal transformer
- The Apex Stereo's ease of presentation was immediately obvious—it fully engaged the reviewer
- The amp exuded supreme self-confidence
- The amp simultaneously speeds things up and slows things down
- Superior speaker grip, improving organization, timing, and musical flow
Product Considerations
- Initial start-up can be alarming due to flashing error lights
- The size and weight (445 lbs) can make installation challenging
- It's gigantic and heavy, requiring special equipment and tools to handle its production
Comparisons (according to reviewers)
- Vs Boulder 2060: The Apex revealed more tonally saturated sounds
- Vs Boulder 2060: Apex cast a larger soundstage, and within those huge spaces, images were generally larger and more three-dimensional
- Vs Boulder 2060: Apex exposed more detail in the music
Takeaway: The Gryphon Apex Stereo is a powerful amplifier that brings music to life with a balanced and full sound at any volume. Its ability to reveal the resonant nature of instruments transforms listening sessions into immersive experiences.
Video review
Our take on the brand
The company's inaugural creation, the Momentum Mono Amplifier, served as the foundation for its product line. The Momentum M400 MxV Mono Amplifier, the latest iteration, enhances the iconic design to new heights. Incorporating techniques and topologies from the Relentless Mono Amplifier, the Momentum M400 MxV models represent the pinnacle of Momentum circuitry evolution. The new model name, MxV, signifies Mass times Velocity—the fundamental equation for Momentum, a recognition that resonates particularly with individuals having a physics background. Explore the cutting-edge Momentum M400 MxV for an unparalleled audio experience.
Our summary
Product Strengths
- Exquisite aesthetics with a sleek design and a power meter that glows green
- Delivers a smooth and satisfying sound
- The sound is described as 'louder' and more powerful
- Said to be able to drive any speaker to its maximum output
- Upgrades are retrofittable to earlier Momentum models
- Balanced input only
Product Considerations
- Runs warm
- The scale on the power meter is essentially uncalibrated
- Requires a return to the factory for MxV upgrades on earlier Momentum Models
Comparisons (according to reviewers)
- The Momentum M400 MxV incorporates technology from the Relentless line and gets very close to the Relentless sound regarding space and depth
- The Momentum M400 MxV is smaller and lighter than the Karan Acoustics POWERa mono
- The Momentum M400 MxV is smaller and lighter than the D'Agostino Progression M550 Mono amplifier
Takeaway: The Momentum M400 MxV monoblock is a beautifully designed and powerful amplifier that delivers a smooth and satisfying listening experience. It incorporates technology from the flagship Relentless model, making it a top-tier choice for audiophiles.
Video review
Our take on the brand
Product Strengths
- Fully balanced design, handcrafted in the USA
- Employs a sextet of KT170 valves, ECC83, and 6H30, with hand-selected and matched valves
- Features Audio Research's 'Auto-Bias' circuitry and an internal hour meter for monitoring valve usage
- Aesthetically elegant design with unique 'Ghost Meters' which are LED-illuminated and can be dimmed or switched off
- Capable of delivering high power at low frequencies, controlling and driving speakers like a big solid-state amplifier
Product Considerations
- High price point
- Requires a 20A IEC cable (supplied)
- The bass control and sheer bass output of the Gryphon Audio Antileon EVO (solid state) could not quite be matched by the Reference 330M
- The unit use a variable speed fan, although it was essentially silent during testing, this may still present a point of concern for some users
Comparisons (according to reviewers)
- Vs Gryphon Audio Antileon EVO: The Gryphon Audio Antileon EVO (solid state) has slightly better bass control and output
Takeaway: The Audio Research Reference 330M is an intelligently engineered and beautifully styled amplifier that embodies the meaning of 'Reference' in sound quality. Its powerful valve design delivers excellent performance and is sure to be a conversation piece in any high-end audio setup.
Video review
Our take on the brand
Possessing formidable power, unrivalled technology and a herculean appearance this amplifier delivers electrifying signals to your loudspeakers, transforming your music into a thrilling experience.
craftsmanshipLow frequencies are faithfully reproduced without a whiff of constraint. Spellbinding vocals have astonishing reality and territory around them.
Monopolizing your leisure time, the addictive clarity and power of each musical note, riveting you into a state of blissful abandonment.
Highly skilled craftspeople take enormous pride in hand building each amplifier, scrupulously checking and testing every parameter, so your enjoyment is forever untroubled.
Power on tapUnprecedented power is yours to unleash, delivering an astonishing musical performance. Concealed within the crafted exterior lurks a gargantuan 2300VA mains transformer delivering mountainous levels of current to feed your musical hunger.
Accomplishing the largest crescendos turns into child's play with 272,000uF of electrical brawn just itching to be discharged.
Reassuringly cool, even under your most sustained inclination to blast away the cobwebs, it is gratifying so much power is on tap.
Product Strengths
- Build quality is among the best, with all pieces fashioned from solid aluminum
- The system delivers an effortless and truly reference-level sound
- Produces deep and powerful bass that energizes the room with ease
- Offers stunning analogue playback with incredible soundstaging, holographic image, depth, and width
- Delivers music with startling clarity across all genres
Product Considerations
- The Reference Preamplifier lacks a remote, focusing on a purist design
- The Reference Three speakers are very heavy—weighing 100kg net
Comparisons (according to reviewers)
- The Avid Hifi Reference system performed similarly well with Fanfare for the Common Man, producing impressive bass and dynamics, compared to the YG Acoustics system with Boulder
Takeaway: The AVID HiFi Reference system is a top-tier system delivering exceptional sound quality and effortless power. It is designed to provide an extremely enjoyable and immersive music experience, making it a worthwhile investment for serious audiophiles.
Video review
Our take on the brand
What competes at this price?
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
Our Summary
Product Strengths
- Strong physical presence and handsome aesthetics, featuring lacquered copper heatsinks, venturi tunnels, and Breguet-style dials.
- MxV upgrades bring significant improvements in core music reproduction areas such as sound stage, detail, and dynamics.
- The Momentum M400MxV sounds 'louder' and more powerful even when set to the same levels as its predecessors.
- The Momentum MxV amplifiers have the ability to bring out the best in loudspeakers
Product Considerations
- The D'Agostino Momentum MxV monoblock is a heavy piece of equipment, weighing 43kg apiece without optional stands.
- The Momentum M400MxV may run warm
- DIP switches for input loading are inside the unit, which requires removing the top cover when switching between cartridges
Comparisons (according to reviewers)
- The Momentum MxV amplifiers bring much of what inspired the larger Relentless Epic 800 and Relentless Epic 1600 to a smaller form factor and price point
- The early Momentum Stereo delivered around half the power of the monoblocks, compared to the Momentum Stereo.
Takeaway: The D'Agostino Momentum MxV amplifiers bring high-end performance in a visually striking package, capable of significantly enhancing the listening experience through improved detail and dynamics. The upgrade path for existing owners also makes it a worthwhile long-term investment.
Video review
Our take on the brand
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Our Summary
Product Strengths
- Refined and powerful sound that can compete with the best
- Big and authoritative sound, dynamics, and deep bass
- Natural and lifelike midrange, and a treble that's so extended that it allows you to find the magic in hi-rez digital
- Enormous soundstage in all directions
- Able to play loud without strain, distortion, or compression
- Offers a refined and powerful sound that can compete with the best
- Big and authoritative sound, dynamics, and deep bass
- Able to play loud without strain, distortion, or compression
Product Considerations
- The power receptacle is 20 amps, and a suitable power cord was not included
- Large and heavy amplifier weighing 55 kilos without packing material, so placement needs consideration
Comparisons (according to reviewers)
- Vs Burmester 909 and 088, the True Life Audio TSI-300 did not make singers ten feet tall, like some big systems do, but there was a stronger sense of the sound going far beyond the room boundaries, while the Burmester gear had an unexpected talent for keeping the images and the soundstage confined to a realistic, lifelike size
Takeaway: The True Life Audio TSI-300 seems to do everything it needs to do without compromise, delivering drama and raw emotion. It will appeal to those who love a big and authoritative sound, dynamics, and deep deep bass without sacrificing musicality.
Video review
Our take on the brand
Our Summary
Product Strengths
- The Brama's graceful sound, looks, fit, finish, and feel make it a standout as a complete package, delivering the sonic goods.
- The Brama offers a finely resolved ease to the sound that does not trade resolution for warmth, but rather offers grace and delicacy.
- It is a completely clean, clear silent runner, with absolutely no discernible self-generated interference.
- The Brama's greatest appeal lies in presenting music as a door already open, without obstruction caused by perceived sonic shortcomings.
- It is a master at fluidity, richness without ever sounding overripe, and dynamic impact that feels right as opposed to overcooked.
Product Considerations
- The control knobs get warm to the touch, but that is just aluminum doing its heat dissipation thing.
Comparisons (according to reviewers)
- Using the Brama's pre-out as pre, the Riviera monoblocks turned the rich cornucopia of sounds into a more believably dense and dimensional garden as compared to the Brama as integrated amp.
Takeaway: The Vinnie Rossi Brama Integrated Amplifier offers graceful sound and attractive design, making it a compelling choice. Its effortless purity and full-range reach invite the listener into the music.
Video review
Our take on the brand
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
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