NuPrime EVO-STA, Руководство пользователя

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NuPrime Evolution STA Stereo Amplifier
The NuPrime Evolution STA offers a breakthrough in distortion reduction. We called that Only Distortion
Cancellation (ODC) design, continued advancing the state-of-the-art Class-D for the past decade.
A typical feedback error correction design inverts the output signal for summation with the original input
signal to derive the negative error signal, which adds to the next cycle of the input signal to form a more
accurate output signal. Nuprime’s ODC Class-D design derives the error signal from MOSFET devices and
the output filter circuit directly, significantly reducing the negative feedback signal, which resulted in a
substantial reduction in distortion THD+N of 0.0025% @1kHz(5W), and less than 0.01% THD+N at 1KHZ (
2W~100W). This breakthrough improvement in Class-D design resulted in a natural and pure sound
characteristic .
Notable Features
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NuPrime breakthrough Only Distortion Cancellation (ODC) Class D design.
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Preamp stage and Class D oscillation circuit utilizing high-end NJR MUSES8820 op-amp
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650KHz high-speed switching frequency allows greater resolution to be achieved.
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The 550W high-power ultra-thin toroidal transformer power supply has been enhanced to deliver
cleaner and more stable power with lower noise floor. The entire power path fully adopts 40A
ultra-high current and low resistance terminals. Improve current dynamic capability. Total of
52,000uF power supply filter capacitors.
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High quality copper PCB trace instead of usual cables are used to connect the power supply to
the amplifier’s circuitry, maximizing power delivery.
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Hybrid Class-D technology that retains the merits of both Class-A and Class-D amplification.
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A stereo amplifier with dual mono implementation.