NuPrime AMG STA-SE

The AMG STA-SE incorporates numerous cutting-edge innovations in power amp design. Its exceptional features include a 1M Ohm input impedance, high instantaneous current for efficient power delivery, a >700kHz switching frequency, and a unique combination of Single-Ended Non-Negative Class A module with Double Feedback Class D module, resulting in a powerful 300W mono amp output. The exceptionally smooth sound characteristic of the AMG STA-SE sets it apart from other top NuPrime amps like the AMG One, Evolution STA, and Evolution Two.

Special Edition Enhancements (AMG STA-SE vs AMG STA)

• The enhanced Class-D circuit boasts a 30% reduction in MOSFET temperature during high-speed operation exceeding 750KHZ (more precise PWM waveform), enhancing energy efficiency and ensuring sound stability. In terms of sound performance, this results in a more relaxed and natural expression.
• Employing aerospace-grade ultra-high-precision resistors with a minimal error margin of 1/1000, our system exhibits ultra-low drift, with a temperature drift coefficient of only 15 parts per million. Generally, it’s rare for amplifiers in this price range to use such ultra-precise components. This ensures that negative feedback sampling remains unaffected by external temperature variations and environmental factors, enhancing accuracy and detail in music reproduction. The result is a clearer presentation of musical intricacies, facilitating easy comprehension of musical expression.
• A newly devised and fine-tuned secondary negative feedback circuit enhances sound delineation and imaging precision, yielding sharper sound contours and improved spatial positioning.
• Leveraging a large-capacity current power supply capacitor design and employing low-impedance routing for the primary current path, our system enhances dynamics and energy. Instantaneous supply current is boosted to 1.5 times that of the original AMG STA design.
• With a Class D oscillation fundamental frequency ranging between 700 and 750KHz, our system achieves excellent high-frequency extension and sound resolution.
• Our newly developed AC power supply minimizes external radiation noise interference, while a redesigned SMPS power module ensures an ultra-low noise system power supply for circuits that required low voltages. The result is a darker and wider sound background, enriching the auditory experience.