Halcro Eclipse mono
Halcro Eclipse Mono pairs near-silent transparency with monumental control, delivering more than 500W into 4 ohms for effortless scale and unflustered dynamics. What Hi-Fi? found its presentation gorgeously real, with precisely locked imaging, lifelike instrumental placement and the rare ability to play loud without sounding strained. This is reference amplification built to vanish behind the music.
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Deliciously Crispy
Sound Quality
97/100
Build Quality
93/100
Value for Money
81/100
Pros
Exceptionally transparent, natural presentation with a convincingly “invisible” amplifier character.
Precise, stable imaging places performers accurately across a soundstage that scales naturally with the recording.
Delivers tremendous high-level composure and powerful control, with lab-tested output above 500W into 4 ohms.
Substantial, resonance-conscious construction and a durable aerospace-grade finish.
Cons
Its very large, 55kg floor-standing form demands careful installation and at least two people to move safely.
An uncompromising flagship purchase, with a pair priced at US$69,990.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 97/100
Reviewers describe an extraordinarily transparent and musically complete amplifier, combining near-unfiltered access to recordings with exceptional control, scale and spatial realism. Its presentation is said to remain composed and convincing at very high levels, with unusually stable imaging and a powerful sense of performers occupying real space.
Transparency Resolution
97/100
What Hi-Fi reports that the Eclipse Monos revealed a vocalist's talent as no other amplifier it had experienced, while finding percussion faultlessly reproduced. SoundStage's Eclipse review likewise calls the family sound 'mind-blowing' in transparency, clarity and purity, with the impression that no amplifier lies between listener and music.
Tonal Balance Musicality
96/100
The mono review calls the sound effortlessly gorgeous, staggeringly real, and notably full through the sound-field. Related Eclipse listening finds that the traditional clarity is paired with greater musical persuasion, engagement and satisfaction, including a lyrical, liquid midrange and grain-free treble.
Dynamics
97/100
What Hi-Fi found the Monos could play at unusually high levels without seeming loud, an especially persuasive trait on full-scale orchestral music. Measured output exceeded 500W into 4 ohms, and the Eclipse platform is also praised for explosive dynamic snap, deep punchy bass, and firm grip without smear, bloat or lag.
Soundstage Imaging
97/100
What Hi-Fi describes a perfectly centred image, accurately placed players, and a stage that expands only as the recording demands. It also found the illusion of a guitarist in the room palpable; SoundStage similarly praises stable, precisely rooted images and strong off-axis focus and coherence.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
93/100
The Eclipse Mono uses a heavily engineered, compartmentalised construction with substantial protection provisions, wide mains-voltage compatibility and multiple input modes including balanced and current-mode connections. Reviewers specifically note thicker casework intended to suppress resonance and microphonics, improved heatsink-pillar connections, and a tough aerospace-grade finish; the related stereo model is described as machined from solid material with aluminium sections up to 10mm thick.
Value for Money
81/100
At US$69,990 a pair, the Eclipse Monos remain an exceptionally costly purchase, and What Hi-Fi explicitly says they are not cheap. The reduction from the AU$135,000 launch price helps, but the reviews do not make a direct case that they are a bargain against competing flagship amplifiers.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
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Specifications
- Power
- Power output into 4 ohms resistive > 500 W Power output into 8 ohms resistive > 280 W
- Distortion
- At full power output, all harmonic distortion orders: THD <-120 dB (<300 parts per billion) up to 20 kHz (100 kHz B.W.) at 450 W into 4 ohms. THD @ 1 kHz <-134 dB (<200 parts per billion). For sum of 19 and 20 kHz tones, each delivering 112.5 W into 4 ohms = peak power 450W, resulting intermodulation products each <-120 dB relative to output. SMPTE-IM intermodulation products each <-120 dB relative to output.
- Inputs
- an unbalanced voltage mode input with an impedance of 22 kOhms a balanced voltage mode input with an impedance of 22 kOhms + 22 kOhms a current-mode input with a 60 Ohm input impedance (infinite impedance current source) a minimal path voltage mode with an input impedance of 660 Ohms
- Noise
- The equivalent input noise at the input is 5 nV/sqrt(Hz) for the voltage modes and 6 pA/sqrt(Hz) for the current mode.
- Frequency Response
- 3Hz – 215kHz: -3db 7Hz – 90kHz: -1dB
- Slew rate limit
- Maximum slew rate for both small signal and maximum output voltage is 100V/μs (which is equivalent to a maximum output voltage at approximately 250 kHz).
- Power supply
- active power factor correction minimizes mains current harmonic distortion operates at all voltages from 85 to 270 V r.m.s. 45-65 Hz, without any internal or external switches less than 100 parts per million mains hum and ripple on the amplifier power rails conforms with PFC and EU emission standards set for 2002
- Overload
- Recovery from hard overload at 20 kHz into 4 ohms is 1 ms.
- Protection
- is short-circuit proof has over current limiting has gradual power limiting if amplifier becomes too hot will cut out if a continuous D.C. offset appears on output will cut out if output current exceeds 12A average continuously over a period of a few minutes is protected against most input overloads
- Components
- For reliability, all semiconductors are at least industrial grade in both the power supply and amplifier. All electrolytics are rated to 105°C in both the amplifier and power supply. only highly linear resistors and MKP10/ FKP1 capacitors are employed in the critical audio path six-layer PCBs are used in the power amplifier to minimize stray magnetic fields and to accurately define voltages four-layer PCBs are used in the power supply to minimize E.M.I. and voltage transients, which improves reliability and power efficiency
- Compartments
- a power supply unit an input amplifier section a power amplifier compartment an output filter compartment
- Filtering
- Series and common mode EMI filtering is present: on the mains input between the amplifier and power supply High frequency filtering is present at the inputs and output.
- Dimensions
- Weight, 135 lb or 62 kg Height, 31 in or 79 cm Width, 16 in or 40 cm Depth, 16 in or 40 cm Shipping weight, (one pair including pallet) 400 lb or 180 kg
Manufacturer's Description — Halcro
The all new Halcro Eclipse amplifiers herald a new era in the Halcro story. The original Halcro dm amplifier hit the market to disbelief – orders of magnitude lower distortion than anyone believed possible. The Eclipse amplifiers take musical expression to a new height.
The new Halcro team have spent the past couple of years exploring every aspect of the unique platform for possible improvements. We present – the new reference in amplification.
Available in both stereo and mono versions, the Eclipse series is unparalleled in its ability to render details formerly lost in the distortion.
The Eclipse enjoys a completely redesigned input stage, further reducing non-linear effects and distortion. There are multiple independently tracking power supplies, superior internal shielding and higher output power. Finally the Eclipse amplifier offers a new, modern, ‘lighter’ take on the distinctive and award winning Halcro aesthetic. Even this contributes to better performance with the new, machined-from-solid casework reducing microphonics.
Halcro amplifiers offer an unmatched insight into the music. They position everything precisely in the soundstage due to their unique ability to avoid adding ‘ghost’ notes that are thrown into the mix by the non-linear distortion of a conventional amplifier. Lack of distortion aside, one of the many things that make Halcro amplifiers so good is the way they maintain the phase coherence of the signal source. Phase coherence is a measure of the degree to which a system maintains the relative timing of various notes or tones within complex music.
When it comes to driving your loudspeakers musically, the Eclipse has no peer. The Eclipse mono produces 300 watts/per channel into an eight-ohm loudspeaker, 550 watts/channel into four-ohms with a peak power of 2.1kW for the most dynamic of transients.
Beyond all the technology, there is only one thing that matters: the ability to convey the emotion of music!
Verified Dealers
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Authorized dealers for Halcro Eclipse mono
- Audio Gallery — online and in-store — Las Rozas de Madrid, Comunidad de Madrid, Spain (website)
- Audiofeel — in-store — Doetinchem, Gelderland, Netherlands (website)
- Audioplus Hi End — in-store — San Benedetto del Tronto, Marche, Italy (website)
- Avantgarde — in-store — Kowloon, Hong Kong (website)
- Hifi Collector — in-store — Uraidla, South Australia, Australia (website)
- HiFi Connoisseur — in-store — Sunnybank, Queensland, Australia (website)
- Klarsund — in-store — Krokslätt, Västra Götalands län, Sweden (website)
- Nirvana Sound — in-store — Cheltenham, Victoria, Australia (website)
- Outlet AudioVideo — in-store — Majadahonda, Comunidad de Madrid, Spain (website)
- The Audio Salon — in-store — Los Angeles, California, United States (website)
and 2 more verified dealers