NuPrime STA-100 Power Amplifier

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  • Regular price $649.00

2x100W Compact Stereo Power Amplifier

The NuPrime STA-100 is the most powerful (2x100W@8 Ohm & 2x150W@4 Ohm) entry-level high-end audio amplifier in its price range. It has a neutral and detailed sound characteristic.

The Adaptive Voltage Switching Power Supply is the most innovative SMPS design introduced by NuPrime for the first time. The amplifier’s output signal feeds back into the power supply’s servo power stage, causing a change in the output voltages supplying the power stage of the amplifier. This design resulted in more details at a low music level and explosive power at a high volume.


  • Design incorporates high-speed gate driver error correction to achieve ultra-low distortion.
  • Advanced protection circuitry safeguard STA-100 from failure due to fault conditions such as short circuits, overload, over-temperature, and under-voltage.
  • High power output in small form factor.
  • Adjustable gain settings. 



  • Inputs: RCA: Un-Balanced input x 1
  • TRIGGER IN (DC 0V~15V). Floating or (DC 3V~15V) as running; less than 0.7V as standby.


  • Stereo Speaker Out x 1
  • TRIGGER OUT (12V,<0.1A)
  • DC 5V output via Type-A USB Connector (Maximum output 1.6A)


  • Power: 2 X 100W @ 8 Ohms, 2 X 150W @ 4 Ohms
  • Peak Output Power: 2 X 125W @ 8 Ohms, 2 X 175W @ 4 Ohms
  • Input Impedance: 47k Ohms
  • Gain: x15, x20, x30 adjustable settings
  • Signal to Noise Ratio: > 90dB at 1W, 10W, 100W
  • THD+N: < 0.005%
  • Frequency Response: 10Hz to 50kHz
  • Worldwide AC voltage: 100 ~ 240Vac
  • AC Fuse: Slow-blow, 5A, 250VAC
  • Dimension:  151 mm W x 136mm D x 51 mm H (including feet)
  • Weight: 1.8 kg
  • Color: Black (PANTONE 19-3924 Night Sky)

Customer Reviews

Based on 2 reviews
Gee Lim

Very good seller😐😐


Powerhouse in a small package. Love the amp. Immediate gratification without the cost or the bulk. Not your ordinary class D amp....expect it to impress you day one.....then everyday afterwards. It helped me to gain trust in the brand.