NuPrime Evolution STA New Evolution Post-Grade
The Evolution STA has made breakthroughs in reducing distortion and is comparable to the flagship Evolution One in terms of sound quality. Stereo power amplifier in dual mono configuration with a power rating of 230W @ 8 ohms.
NuPrime Evolution STA, which we call ODC Distortion Cancellation Design, is an advanced Class D audio technology that has been advancing for years.
A typical feedback error correction design is to invert the output signal to the original input signal to obtain a negative error signal, adding to the input signal to reduce distortion. NuPrime's ODC-D Class design, which derives the error signal from the MOSFET device and the output filter circuitry, greatly reduces the amount of negative feedback, resulting in a significant reduction in distortion THD+N while bringing natural and pure sound characteristics.
peculiarity
NuPrime's groundbreaking ODC unique distortion elimination Class D design.
The pre-stage and Class-D oscillation circuits use the high-end NJR MUSES8820 operational amplifier.
High speed switching frequency of 650kHz enables greater resolution.
550W high power ultra-thin toroidal power transformers have been enhanced to provide cleaner, more stable power supplies and reduce noise floor. The entire power path is completely using 40A ultra-high current low-impedance terminals to improve the current dynamic ability. A total of 52,000uF power supply filter capacitors.
Replace the usual circuit with high-quality PCB traces to maximize power output.
Hybrid Class D technology, retaining the advantages of Class A and Class D amplification.
Stereo power amplifier with dual mono structure.
Evolution STA Post-Evolution sound characteristics:
Wider and deeper soundstage without loss of clarity at maximum depth. The details are presented in a realistic way, without artificial enhancement.
Faster dynamic range and wider frequency domain
Ultra-low distortion, natural and pure
Cleaner backgrounds with more detail and micro-dynamics
Class A-like warm tone
parameter
RMS rated output power: 230W @ 8 Ohms, 310W @ 4 Ohms
Peak output power: 270W @ 8 Ohms, 360W @ 4 Ohms
Buff: x21
Sensitivity: 2Vrms
Input impedance: 47K Ohms
Total harmonic distortion and signal-to-noise ratio: 0.0025%, 95db @5W; 0.007%, 105db @50W; 0.01%, 110db @100W
Frequency Response: 10Hz to 50kHz (-3dB)
Trigger switching signal input and output
Standby power consumption: 1.7W @ 230V
Power consumption in the vacant state: 26W @ 230V
Fuse tube: slow melt type, 7A, 250VAC
Size: 430mm wide x 372mm deep x 66.5mm high
Weight: 10.5Kg
Packing size: 642mm x 594mm x 254mm
Packing weight: 14Kg
Exterior color: black or silver