MERAK is an amazing monoblock power amplifier born for the 21st century. It is the perfect combination of inspiring artistry and ingenious design. AURALiC create MERAK by merging the sophisticated amplifier design philosophy with modern audio technology, and dressed it up with a compact appearance.
The heart of MERAK is AURALiC Hybrid Analog Amplify technology. By joint using it with ORFEO Class A output module, input isolation transformer, linear power supply and several latest technologies, AURALiC has successfully brought the design essence of analog age back to life. With the new generation of switching technology, MERAK achieves 400W continuous output power while maintains its efficiency at 90%. Benefited from linear power supply and a 56, 000uF capacitors array, energy storage of MERAK is more than 120 Joule, this enables MERAK to deliver 16 amps peak current which equal to about 900W power into large, power-hungry loudspeakers, easily presenting the magnificence of stage, reproducing the tiniest detail of music to you.The sound of MERAK is sweet, warm and vivid with great artistic appeal; it fulfills AURALiC's elegant and graceful aesthetic taste. Thanks to the Hybrid Analog Amplify technology and power management circuit, MERAK realizes the perfect balanced between driving capability and energy consumption. Comparing to the other traditional power amplifiers, MERAK is more environmentally friendly by reducing the carbon emission of 1100kg per year, making it to be another nova of ‘green' hi-end equipment.
AURALiC introduce a cutting edge technology:
Hybrid Analog Amplify to MERAK . This technology combines the advantages
from linear and switching amplifier circuits. It uses linear components
to handle the input signal, to process the voltage amplification so as
to achieve very low noise and distortion. Meanwhile, low impedance, high
speed switching components was deployed in output stage to maximize the
driving capability and reduce heat dissipation. With Hybrid Analog
Amplify technology, MERAK owns excellent linearity, great output power
as well as high energy efficiency.
Hybrid Analog Amplify technology utilizes high quality input isolation transformer made by Lundahl and AURALiC ORFEO Class-A module in signal amplify circuit. The isolation transformer contributes a perfect EMI noise attenuation while maintains the signal integrity; it can reduce EMI noise by 100dB even under non-ideal situation which is 1000 times superior to the traditional circuit design. AURALiC's patented ORFEO Class-A module is also used here for driving the output stage. ORFEO Class-A module is not only powerful in driving capability but also show itself with vanishingly low distortion at less than 0.001% within complete audio band.
The output stage is powered by Hypex UcD technology. AURALiC has modified and optimized the Hypex design based on mathematician models between subjective auditory sense and objective testing data. Comparing to the original solution, high order distortion components (mostly from 4th to 7th ) were effectively suppressed by over 10dB , this lead to a significant improvement in listening experience. In additional, the output stage owns a frequency-constant output performance when driving loads from 4 to 16 ohm, making it suitable for driving various kinds of loudspeakers.
Strong, smooth and constant power supply is
essential to monoblock power amplifier like MERAK . To satisfy this,
AURALiC tailor made Purer-Power Linear Power Solution for a pure and
abundant power supply. The 500VA main transformer used in MERAK is
customized with patented low noise, narrow band technology from Plitron ,
following by a 56000uF capacitors array. Purer-Power Linear Power
Solution can store up to 120 Joule energy, keeping the noise and source
impedance at lowest level as well as offering excellent current
To let MERAK sounds as transparent as possible, Purer-Power Linear Power Solution was designed to offer an astonishing purifying ability. It can strongly isolate common-mode and differential-mode interference from both within and outside audio band as high as 90dB while reshape the electrical circuit and remove DC current. The power solution can also effectively prevent electrical circuit from being interfered by those current entering into system via power supply, by which means to ensure more stability of circuit and more purification of sound.
Continuous Output Power
Peak Current Output
>16 amp (40 ms)
20Hz - 20KHz, +/- 0.5dB
<50uV, 20Hz-20KHz, A-weighted
1 x XLR, Sensitivity: 2.2Vrms(RCA input requires adapter)
1 x XLR invert output ( for BTL mode)
1 x Cardas patented CE binding post
2ohm to 16 ohm
warm-up mode: 5W
playback mode: 15W/450W (idle/max. output)
Considering the two high-performance competitors covered above, my nod for ultimate value & performance falls on today's AURALiC Merak. Of higher fidelity than the ICEpower integrated, not quite as brilliant but uncomfortably close to the Ncore equivalents which sell for nearly twice the coin, the $5.000/pr Meraks have simply nailed that most attractive balance of them all...
„Class A? Oh ja. Class D? Oh weh“, mag sich manch ein insbesondere auf unaufgeregte, artefaktefreie Natürlichkeit bei der Wiedergabe stehender Audiophiler denken. Aber mal ganz jenseits allen Klischee-Denkens: Gerade mit Blick auf eine solche Hörpräferenz liefert das Auralic-Gespann wahrhaft Großes ab.
A English translated review is available on 6moons.
Die Meraks zeigen, was moderne Class-D-Technik zu leisten imstande ist. Klanglich sind sie eine zackige, sichere Bank, außerdem sind sie an jeder Last einsetzbar. Klasse!
Through long-term research and test, we find out that audio signal could easily be disturbed by electromagnetic interference and get distorted. Such distortion could lead to the lacking in the sense of natural liveliness and smoothness of the music replay. The protection from traditional aluminous or ironic cabinet to audio signal is very limited. Therefore, in the times of CD as the main music player, the tiny details in music could not be represented fully as a result of the limitation of electricity properties from recording media and replay equipments. Along with the gradual widespread of Hi-Rez format music, the characteristics of replay equipment, the abilities of discovering and reproducing tiny details of music in particular, became the bottleneck of the whole system′s development. Also, external electromagnetic interference, for the 1st time, turned out to be the heart of the matter.
In order to satisfy the needs of Hi-Rez format music replay, AURALiC researched and developed a kind of cabinet material named AFN402, which is an alloy of iron with certain portion of nickel, silicon and other rare metals. AFN402 could not only isolate external electromagnetic interference effectively and efficiently, but also restrain resonance. The isolation ability within audio frequency and above audio frequencies from AFN402 turned out to be 3 times and 10 times of that of traditional cabinet respectively.
Alire™ Resonance Damper
As is well known, Resonance could affect the phase of audio signal tremendously and could cause the instability to soundstage. As a result, resonance has always been one of the key directions for research in audio system. The electric current in conductor could cut external magnetic field under resonance and thus produce the induced current with specified frequency in conductor, which will make audio signal get distorted to a certain serious degree no less than that from electromagnetic interference.
In order to restrain vibrations, AURALIC researched and developed a new kind of material, Alire Resonance Damper, which was made by arranging and pressing multiple raw materials of diverse resonance frequency from layer to layer. Through sticking Alire to the inner side of cabinet so as to make the 'sandwich' structure, resonance could be effectively restrained and its resonance frequency could be changed. All the chassis of AURALiC series products are covered by Alire, which could exempt the products from both electromagnetic interference and vibration interference and ensure provide purist signal to the initial stage of music replaying.
Power supply of audio equipment is one of the most key parts in influencing its electrical characteristics and sound representation. The aim of Purer-Power technology is to provide pure and stable power supply to audio-frequency circuit. It works as follows: the AC power from electrical network goes through AURALiC power purification module; then the purification module will strongly isolate common-mode and differential-mode interference from both within and outside audio frequencies frequency as high as 90dB; after that, the module will reshape the electrical circuit and remove DC current. To summarize, AURALiC power purification module could effectively prevent electrical circuit from being interfered by those current entering into system via power supply, by which means to ensure more stability of circuit and more purification of sound.
The purified electrical current enters into the primary transformer to get voltage changed. According to diverse situations and property needs, AURALiC has tailed-made the multiple standards of transformers series and set up the partnership with Plitron as its producer. With regards to those transformers designed for very specific needs, the workers are to adopt man-made method. Those transformers are made from the iron core of special specifications and unique wiring, which will definitely improve its effectiveness and lower its internal resistance as well as its vibration. Therefore, the transformer of such kind will work very quietly without impacting their surrounding electrical circuit.
DC supply circuit in purer-power technology has been designed on the simulate battery properties. It works like this: DC current goes into filtering circuits (which are made of a set of huge storage capacitors) and isolates efficiently the noise within and above the audio frequency; then the current goes into high speed, low noise, low impedance, multi-stage regulators; these regular circuits provide pure and stable current to audio frequency power supply. From the above description, we can see that DC supply circuit in Purer-Power provides lowest noise and highest stability. In the contrast, internal resistance of battery changes according to the residual amount of electricity and produce electrochemistry noise consequently. Therefore it is evident that DC supply circuit in purer-power technology owns better electrical characteristics.
|Tip Echipament||Putere Monoblock|