NuPrime STA-6


Compact 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.

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SKU: NP-STA-6 Category:


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

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, while most competing class-D amps switch at 400kHz or lower. A specifically designed low noise switching power supply provides ample power in the STA-6 diminutive chassis. Due to the STA-6’s frequency response that reaches to 50 kHz, vocals elevate into emotional experiences and instrumental upper registers mimic a live performance’s shimmering heights. The overall result is unprecedented transient speed, smooth with lots of details and an almost shocking level of dynamic impact.

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


  • One pair of Un-Balanced RCA



  • One set of Stereo speaker (binding posts)#



  • 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.
  • THD+N: 0.01% (Stereo) / 0.01% (Mono)
  • Signal to Noise Ratio: > -90dB at 1W, 10W, 100W
  • Gain: x 28
  • Frequency Response: 10Hz to 50kHz
  • Dimensions: 200 mm W x 184 mm D x 60 mm H (including feet)
  • Weight: 1.65Kg
  • With Package Weight: 2.2Kg
  • Worldwide AC voltage: 90 VAC~ 250 VAC
  • Power On Consumption: 12.8W (220V) / 12.1W (110V)
  • Available in Black color only.


#Please refer to the manual for bridged mono connection


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