Pathos InPoL Legacy
The Pathos InPoL Legacy delivers a lavish Class A sound, pairing glowing tonal richness with a vast, immersive soundstage. HiFi News admired its vivid vocals, smooth textures and effortless musical flow, while its 100W-per-channel design brings authoritative scale. This is a statement integrated for systems that prize emotional realism, spacious imaging and fatigue-free refinement.
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Deliciously Crispy
Sound Quality
95/100
Build Quality
91/100
Features Connectivity
83/100
Value for Money
85/100
Pros
Exceptionally expansive, three-dimensional soundstage with convincing ambience and precise image placement.
Rich, smooth and highly expressive midrange reproduces vocals and instrumental textures with impressive naturalness.
Substantial Class A power and drive deliver strong dynamics and effortless output with suitable loudspeakers.
Cons
Bass prioritises tuneful integration over the tightest slam, with some softness versus similarly priced rivals.
Its 140kg, exceptionally deep chassis, high idle power draw and heat output demand serious space, ventilation and installation planning.
Analogue-only connectivity omits digital inputs, streaming, phono capability and system-integration features.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 95/100
Reviewers portray the InPoL Legacy as a lavish, natural-sounding Class A amplifier with exceptional spaciousness, tonal richness and a notably immersive musical manner. Its presentation favours generosity and flow over strict analytical dissection, while still delivering finely resolved textures, strong drive and unusually large-scale imaging.
Transparency Resolution
94/100
Hi-Fi News heard exquisitely defined instrumental textures, vivid vocals and a wide-open, grain-free presentation, while also praising the resolution of quiet ambient detail. Stereophile similarly found pure, convincing instrumental tone, though it noted that the Pathos is not an analytical amplifier and can trade some individual-event definition for a more integrated musical whole.
Tonal Balance Musicality
96/100
The amplifier's tonal character drew especially enthusiastic praise: Hi-Fi News described a thrilling midband, butter-smooth delivery, and a natural blend of smoothness, richness and bite. Stereophile called its sound seductive, composed, warm and generous, while acknowledging that this is a deliberately coloured, indulgent presentation rather than a strictly neutral one.
Dynamics
92/100
Hi-Fi News found superb dynamic attack and ample power for deep bass lines, while Stereophile praised the amplifier's exceptional drive and reported that it could play intensely loud with sensitive speakers. Measurements confirm substantial output into 8 and 4 ohms under dynamic conditions, although its limited current delivery makes it best partnered with medium-to-high-sensitivity speakers of roughly 6 ohms nominal impedance or above.
Soundstage Imaging
97/100
Soundstage performance is a major strength. Hi-Fi News heard a wide, almost horseshoe-shaped stage with pinpoint percussion and convincing venue ambience, while Stereophile described immense width, depth, height and life unlike other amplifiers it had heard in its system.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
91/100
The InPoL Legacy is hand-built in Pathos's own facility and uses premium Neutrik input connectors, WBT speaker terminals and an in-house power supply derived from the company's monoblocks. Its 140kg chassis, elaborate packaging and substantial physical execution underline the seriousness of the construction, although the reviews say little about long-term reliability.
Features Connectivity
83/100
Connectivity is focused on analogue sources, with three balanced XLR and three single-ended RCA inputs, dual WBT speaker terminals, and remote input and volume control. There are no digital inputs, streaming facilities, phono stage, headphone output or provision for an add-on digital module, so it suits a separate-source high-end system rather than an all-in-one setup.
Value for Money
85/100
At roughly £51,995 to £60,000, the InPoL Legacy is firmly a reference-level luxury purchase, with its price reflected in the unusual Class A architecture, hand-built construction and extreme physical scale. The available reviews are strongly enthusiastic about its performance but do not directly assess whether it is good value against competing amplifiers at this price.
Reviews & Sources
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Specifications
- Type
- Reference stereo integrated amplifier Pure class A– double INPOL technology – fully balanced
- Tubes
- 4 x ECC803 tung-sol2 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 1KHz0,5% @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
Manufacturer's Description — Pathos
Pathos introduces the new integrated amplifier with patented InPoL technology: InPoL Legacy
As Heritage was meant to be a tribute to the work of Gianni Borinato, co-founder of Pathos, a heartfelt acknowledgment of his innovations and contributions to the world of audiophiles, similarly InPoL Legacy represents the ideal legacy of Gaetano Zanini, co-founder, and owner of Pathos. A superb design, the ultimate in Pathos technology packed into an integrated amplifier,which takes the listening philosophy developed over 25 years by the company to extremes,both in terms of component choice and the absolute performance of this masterpiece.
We have not set limits
At Pathos, we set ourselves an ambitious goal: to make the best Pathos integrated amplifier ever, one that would match, if not surpass, the InPower and Adrenalin power amplifiers.
In designing the new InPoL Legacy, we, therefore, set no limits on ourselves – primarily concerning weight and size, which we have previously tried to limit.
The result is greater grit, never abrupt but well controlled. Large excursions in intensity are sensitive to the smallest variations: compared to other Pathos amplifiers, InPoL Legacy can boast greater dynamics and a full, complete, defined sound.
The Pathos listening philosophy is expressed in the soft, smooth, fatigue-free sound. We have also improved the nuances by choosing excellent quality components without any compromise.
The heart of the InPoL Legacy is the patented dual InPoL technology, in bridged configuration, combined with a tube stage.
InPoL soul
InPoL® (Linear Pump Follower) was created to develop an amplification stage without feedback, with limited distortion and a satisfactory attenuation factor.
For this purpose it has beenused a single solid-state component in follower confguration, with hypothetical voltage gain = 1 and with high current gain.
The polarization is pure class A to avoid crossover distortion. InPoL technology allows the theoretical pure class A efficiency to be increased from 25% to 50%.
The dual InPoL configuration allows increased power while containing circuit size. The amplifier is fully balanced, resulting in a significant reduction in noise and distortion.The tubes voltage amplification characterizes the sound of InPoL amplifiers, as rich, warm, and never tiring.
Technical features
InPoL Legacy is a fully balanced dual-mono amplifier. The power supply comes from Adrenalin and InPower, with one capacitive inductive filter per channel. The two toroidal power transformers are the largest we have ever made. While we have always previously limited the size and weight of the amplifiers, in this case, we set no limits.
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 pole 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.
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- Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
- Alta Fedelta — online and in-store — Lombardia, Italy (website)
- Analogue Seduction — online and in-store — Whittlesey, England, United Kingdom (website)
- Art & Voice — online (website)
- Audio Affair — online and in-store — Deritend, England, United Kingdom (website)
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- Audio Zaal — online and in-store — Binnenstad, Utrecht, Netherlands (website)
- Auditorium — in-store — Hamburg-Mitte, Hamburg, Germany (website)
- COMMERCIAL ELECTRONICS — online and in-store — Vancouver, British Columbia, Canada (website)
- George Meyer AV — in-store — Los Angeles, California, United States (website)
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