• NuPrime STA-6 Stereo Amplifier

    Free Shipping!

    The NuPrime STA-6 Stereo Amplifier (Commercial)

    MSRP $ 399 (USD)

    NuPrime audiophile quality commercial products are typically not sold in retail stores. 

    Class A+D Stereo Amplifier Brigeable into a 160 watt Mono Amplifier

    With 2 X 90W Class A+D stereo amp, bridgeable into a 160W mono amp, STA-6 is designed with enhanced even-order harmonic circuitry that produces sonic characteristic similar to NuPrime STA-9, but leaning toward neutral with a slight hint of warmth. The STA-6's spacious, transparent, dynamic and luxuriously textured soundstage has to be heard to believed.

    The STA-6 amplifier is derived from the Single End Class A Module + Class D design first introduced in the STA-9. By joining a powerful high impedance singled ended amplifier circuit in the preamp stage with a well integrated Class-D power stage, the STA-6 offers the richness of Class A sound with the remarkable speed and clarity of NuPrime Class-D design. Audio enthusiasts are bound to be impressed.

    The NuPrime amp circuit improves on traditional Class-D design by using a self-oscillating circuit to generate pulse-width modulation. The amplifier switches at a frequency of 500kHz, well beyond the compact disc’s 44.1kHz sampling rate. Most class-D amps switch at 300kHz or lower. A new low noise switching power supply is designed specifically to complement the STA-6 amplifier. The overall result is unprecedented transient speed, smooth with lots of details and an almost shocking level of dynamic impact.

    The STA-6's frequency response to 50 kHz elevates vocals into emotional experiences; similarly, instrumental upper registers mimic a live performance’s shimmering heights.

    The STA-6 is designated for NuPrime Commercial product line and it is designed to be highly reliable under no-load condition and enhanced short circuit protection.


    • Inputs: RCA: Un-Balanced input x 1
    • Outputs: Stereo Speaker Out x 1 or Mono Speaker Out x 1
    • Power: 2 x 90W / 1 x 160W @ 8 & 4 Ohms. Same power at 8 & 4 Ohms as the output power is limited by the power supply.
    • Input Impedance: 47k Ohms
    • Gain: x 28
    • Signal to Noise Ratio: > -90dB at 1W, 10W, 100W
    • THD+N: 0.01% (Stereo) / 0.01% (Mono)
    • Frequency Response: 10Hz to 50kHz
    • Worldwide AC voltage: 90 VAC~250 VAC
    • Dimension: 200 mm W x 184 mm D x 60 mm H (including feet)
    • Weight: 1.65kg
    • With Package Weight: 2.2kg
    • Color: Black