Hybrid Analogue Amplifier Technology
AURALiC introduce cutting edge technology: with a Hybrid Analogue Amplifier in 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 are deployed in output stage to maximize the driving capability and reduce heat dissipation. With Hybrid Analogue Amplifier technology, MERAK owns excellent linearity, great output power as well as high energy efficiency.
Hybrid Analogue Amplifier technology utilizes high quality input isolation transformers made by Lundahl and AURALiC ORFEO Class-A module in the signal amplifier circuit. The isolation transformer contributes perfect EMI noise attenuation while it maintains the signal integrity; it can reduce EMI noise by 100dB even under non-ideal situations, 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 shows itself with impressively 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 with the original solution, high order distortion components (mostly from 4th to 7th) were effectively suppressed by over 10dB, which lead to a significant improvement in the 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.
Purer-Power™ Linear Power Solution
Strong, smooth and constant power supply is essential to a 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 levels as well as offering excellent current transient performance.
To let MERAK sounds as transparent as possible, Purer-Power Linear Power Solution was designed to offer astonishing purifying ability. It can strongly isolate common-mode and differential-mode interference from both within and outside audio band as high as 90dB and reshape the electrical circuit and remove DC current. The power solution can also effectively prevent the electrical circuit from being disrupted by current entering into the system via power supply, to ensure more stability of circuit and more purification of sound.
Advanced Power Management
For better balance between performance and energy saving, MERAK is equipped with AURALiC's advanced power management circuit. MERAK will automatically run at warm-up mode as soon as the mains power is connected. In warm-up mode, MERAK shuts down its output stage to save energy while it leaves the Class-A signal amplifier circuit and Purer-Power supply unit in working status. At little expense of less than 5 watt energy consumption, the signal amplifier circuit, which usually requires warm-up to achieve the best performance, is always in best order. When MERAK wakes up for operation, it always presents you with the best sound.
Advanced power management also imparts MERAK with an intelligent wake up and auto sleep function. When this function is active, MERAK will monitor its input and wake up by any valid music signal above 5mV within 0.5 second, ensuring that you will not miss the starting chapter of music. When the signal stops for 5 minutes, MERAK will go back to warm-up mode. The intelligent wake up function is controlled by a computer based signal processor and can distinguish any interference from music, such as the pop noise when you plug or unplug the input cable.