Evolution Two-SE
$ 4,199.00
The Evolution Two-SE is a mono amplifier (RMS Power 300W@8 Ohm, 600W@4 Ohm) that offers a breakthrough in distortion reduction and it is the most powerful, dynamic, natural and detailed amplifier in all Nuprime series. The upgraded Evolution Two-SE competes with the world’s finest Class A amplifiers.
| Weight | 12 kg |
|---|---|
| Dimensions | 375 × 430 × 57 mm |
| Color | Black, Silver |
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)
- 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
- Enhanced THD+N performance:
- 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.) - 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.
- 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.
SPECIFICATIONS
- Power Output (RMS): 300W @ 8 Ohms , 600W @ 4 Ohms
- Power Output (peak): 410W @ 8 Ohms , 820W @ 4 Ohms
- Gain: 26.44 dB; Voltage Gain: 21
- Sensitivity (to rated power): 2.1Vrms
- Input Impedance: 47K Ohms
- Output Impedance: 2m Ohm
- THD+N: 0.001% at 1kHz (5W), 0.002% at 1kHz (200W), 0.002% across 2W–200W range
- Frequency Response: 10Hz to 50kHz (-3dB)
- Trigger IN
- Standby Power: 1W @ 115V outlet, 1W @ 230V outlet
- Idle Power: 16W @ 115V outlet, 14W @ 230V outlet
- Worldwide AC voltage: (115VAC / 230VAC) with Voltage Select Switch
- AC Fuse: Slow blow , 7A , 250VAC
- Color: Black or Silver
- Product Dimension: 57 x 430 x 375 mm (H x W x D)
- Package Dimension: 642 x 594 x 254 mm (H x W x D)
- Product Weight: 10.5kg
- Package Weight: 14kg
NuPrime Audio Evolution Two Mono Power Amplifier
– Roger Kanno, soundstagehifi.com
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I loved having the NuPrime Evolution Two amplifiers in my system. They reminded me a lot of my reference Anthem M1s ($3999 each). Rated at 1000W into 8 ohms, the Anthems have a lot more power than the NuPrimes, but I never felt that the NuPrimes were lacking in that regard even when driving the hybrid electrostatic ML ESL 9s.
Both amplifiers had a similarly neutral sound with just an added touch of richness to make them wonderfully engaging no matter what I played. In both the Anthems and the NuPrimes, this was achieved without sacrificing the precision and detail required to extract the nuanced information present in high-quality recordings.
Playing “Full of Life,” by Christine and the Queens, I noticed that both amps presented a similarly large soundstage populated distinctly by the orchestral parts, backing vocals, and lead vocals. But there were some differences. With the NuPrimes, the higher-pitched notes of the violin and viola sounded more distinct than the lower-pitched notes of the cello and bass. The strings were all more clearly delineated than the backing vocals. Letissier’s lead vocals were imaged slightly more forward with the Anthems, resulting in a greater presence and a more immediate sound, but the NuPrimes did a better job of maintaining the sustain of Letissier’s haunting voice. The most noticeable difference between the two amps was in how they reproduced deep bass. The NuPrimes sounded extremely solid and satisfying, but the Anthems could go a little lower, and with more power, although they too were not always as taut as I would have liked when played at very high volumes.
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