NuPrime Evolution STA Power Amplifier

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  • Regular price $6,475.00

NuPrime Evolution STA Stereo Power Amplifier

The NuPrime Evolution STA offers a breakthrough in distortion reduction. Coined the Only Distortion Cancellation (ODC) design, NuPrime has continued advancing the state-of-the-art Class-D for the past decade. Reaching a similar performance level as the Evolution One monoblocks, the Evolution STA offers the best of the ST-10 and the AMG STA while improving the performance to a higher level.


  • 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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