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AMG STA Power AMP Stereo 130W / Mono 300W

HK$14,800.00
  • Brand: Nuprime
  • Product Code: AMG Sta
  • Availability: In Stock
Tags: Nuprime

    AMG STA Power AMP Stereo 130W / Mono 300W


      The Nuprime AMG STA comprises of several state-of-the-art innovations in power amp design. Its class-leading features include 1M Ohm input impedance, high instantaneous current for power delivery, 700kHz switching frequency, and Single-Ended Non-Negative Class A module coupled with Double Feedback Class D module for 300W mono amp power.

      The AMG series front panel embodies its spirit. It is milled from a 15mm harden aerospace aluminum alloy using a four-axis CNC machine with a diamond cutter through a 48 steps process. Design elements such as the 3D “floating” logo, the curved surface around the front panel switch, and diamond-cut edge bring the quality of ultra-high-end audio products to the affordable range of the AMG series.



    AMG STA PCB integrates ground wire shielding to isolate external interference. The 300 Mhz bandwidth JFET provides ultra-high input impedance and wide-band fast response. The dynamics of the design and the single-ended Class A circuit enriches the natural second harmonic.

    This design allows the most delicate details in the audio signal to carry through the chain. The level of transparency in sound reproduction is genuinely astonishing in this class of equipment, with a deft in creating a highly detailed sonic imagery.



    The AMG-STA uses the “Single-Ended, Non-Negative Feedback” Class-A module partners with a new “Double feedback” Class D circuitry. The Class D oscillating frequency has increased to 700kHz, which is 1.4 times that of the STA-9.


    Power Circuit

    The power supply uses a 380W special winding power transformer, which has 30% more peak power output of a similar volume transformer.


    The AC power input from the Inlet Connector to the power transformer utilizes a high current welding line to provide maximum power transmission.

    Besides, high-frequency 3rd-order AC power filter reduces external noise.


    A 20A lock wire terminal block connects the transformer to the motherboard, in parallel with two10A peak current rectifiers.

    The main current path, adopting a large-capacity current design, uses a low-impedance copper plate to maximize power delivery to the amplifier circuits.

    The main current path, adopting a large-capacity current design, uses a low-impedance copper plate to maximize power delivery to the amplifier circuits.

    With improvements to every area, the bar has been raised for what is achievable with audio performance in small form factor. Strong hints of the Evolution sound, such as the rich, natural details, and the smooth, inviting sound, can be heard through the AMG-STA. High-frequency extension and Low-frequency dynamic speed are much improved from the STA-9.

    Specs

    .Stereo Power: 2 X 130W @ 8 Ohm & 2 X 200W @ 4 Ohm
    .Mono Power: 300W @ 8 Ohm & 320W  @ 4 Ohm
    .Gain : 26 (stereo) & 52 (mono)
    .Signal to Noise Ratio : 100 dB @ 10W
    .THD+N : 0.006
    .Frequency Response : 10Hz~50K Hz +-0.2dB @ 8 Ohm.  58K Hz @ -3dB
    .Input Impedance: 1M Ohm
    .Sensitivity: 1.2 Vrms @ Stereo; 0.95 Vrms @ Mono