NuPrime Audio Evolution STA Stereo Power Amplifier

$5,908.05

$4,923.37 Exc. VAT |

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NuPrime Audio Evolution STA Stereo Power 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 0.002% @1kHz(5W), and less than 0.005% THD+N at 1KHZ (2W-100W). This breakthrough improvement in Class-D design resulted in a natural and pure sound characteristic.

Features

NuPrime breakthrough Only Distortion Cancellation (ODC) Class D design.
Preamp stage and Class D oscillation circuit utilizing high-end NJR MUSES8820 op-amp.
650KHz high-speed switching frequency allows greater resolution to be achieved.
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.
High quality copper PCB trace instead of usual cables are used to connect the power supply to the amplifier’s circuitry, maximizing power delivery.
Hybrid Class-D technology that retains the merits of both Class-A and Class-D amplification.
A stereo amplifier with dual mono implementation.

Power Output (RMS): 230W @ 8 Ohms , 310W @ 4 Ohms
Power Output (peak): 270W @ 8 Ohms , 360W @ 4 Ohms
Gain: x21
Sensitivity (to rated power): 2Vrms
Input Impedance: 47K Ohms
EVO STA WATT / THD / S/N (typical) : @5W (0.0025% ,95db) , @50W (0.007% , 105db) , @100W (0.01% , 110db)
Frequency Response: 10Hz to 50kHz (-3dB)
Trigger IN and OUT
Standby Power : 1.5W @ 115V outlet, 1.7W @ 230V outlet
Idle Power : 24W @ 115V outlet, 26W @ 230V outlet
Worldwide AC voltage: (115VAC / 230VAC) with Voltage Select Switch
AC Fuse : Slow blow , 7A , 250VAC
Dimension : 430mm x 372mm x 66.5mm
Weight : 10.5Kg
Package Dimension: 642mm x 594mm x 254mm
Package Weight : 14Kg
Color : Black or Silver

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