Evolution Two-SE

The NuPrime Evolution Two-SE represents a breakthrough in distortion reduction. Utilizing our proprietary “Only Distortion Cancellation” (ODC) design, this amplifier advances the state-of-the-art in Class-D amplification, a process we’ve refined over the past decade.

Traditional feedback-based error correction designs invert the output signal, compare it to the original input, and then use the resulting negative error signal to correct the next cycle for improved accuracy. In contrast, NuPrime’s ODC Class-D technology directly extracts error signals from the MOSFET devices and output filter circuits, significantly reducing negative feedback.

Compared to the Evolution Two, the Evolution Two-SE features a new ODC circuit that enhances interference handling by a factor of 10, resulting in improved total harmonic distortion (THD) performance.

Key Upgrades & Enhancements (over Evolution Two)

1. Updated ODC Circuitry
   • Enhanced THD+N performance:
     • 0.001% at 1kHz (5W)
     • 0.002% at 1kHz (200W)
     • 0.002% across 2W–200W range
     • For reference, the original Evolution TWO measured 0.003% @ 5W and 0.006% @ 100W
2. Upgraded Feedback Circuitry & Class-D Oscillation Resistors
   • Military-grade ultra-low error resistors with an ultra-low 15ppm temperature coefficient.
   • Significantly improved resolution and refinement. (Same high-precision feedback resistors as the AMG-STA SE upgrade.)
3. Newly Developed Class-D Power MOSFETs
   • 3x increase in peak current delivery, significantly enhancing driving capability.
   • 2-ohm load compatibility for driving demanding speaker systems.
4. Precision CNC-Machined Aerospace-Grade Aluminum Heatsink Module
   • Improved thermal stability and sustained high-current output performance

This breakthrough improvement in hybrid Class-D design resulted in a natural and pure sound characteristic.

Notable Features

• NuPrime breakthrough Only Distortion Cancellation (ODC) Class D design.
• High-end LME49860 op-amps in the preamp and Class-D oscillator stages for ultra-low noise and distortion.
• 650kHz high-speed switching frequency for superior resolution.
• 900W high-power ultra-thin toroidal transformer power supply, delivering cleaner and more stable power with reduced noise floor.
  • 40A high-current, low-resistance power terminals for improved dynamic response.
  • Total power supply capacitance: 48,400µF per channel (supports 2Ω load drive capability).
• 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.
• True mono amplifier design.

The Evolution Two-SE sound characteristics can be described as:

• Expansive soundstage with deep black background
  • Rich, authoritative control that effortlessly drives ultra-low impedance speaker systems.
  • Maintains precision and detail even at 200W output without losing clarity.
  • Large orchestral recordings reveal every nuance, from the farthest percussion and brass to subtle pedal movements—all naturally reproduced without artificial enhancement.
• Faster dynamics with a wider range and full-spectrum power.
• Ultra-low distortion with pure, natural sound quality.
• Clean background with enhanced micro-details.
• Warm tonality reminiscent of Class-A amplifiers.