Starkrimson® Ultra Amplifier Modules -- 250/500W into 8/4ohm

I am proud to introduce this state-of-the-art gallium nitride (GaN) audio power amplifier mono module that is capable of 250/500W into 8/4ohm loads.

The modules can be preordered here: (preorder pricing ends May 31st ):


  • Fully balanced from input to output (w/ differential input)
  • Differential and single-ended audio inputs
  • Extremely low noise and distortion
  • 2-ohm capable
  • Overcurrent, overvoltage, and thermal protection
  • 20A output current


  • Gain (balanced input): 19.05dB
  • Gain (single-ended input): 25.05dB
  • Signal-to-Noise Ratio (SNR): 120dB (A-weighted)
  • Power output into 8Ω/4Ω: 250W/500W
  • Input Impedance balanced/single-ended: 44k/22k
  • Sensitivity (balanced input): 5Vin for 250W into 8Ω
  • Sensitivity (single-ended input): 2.5Vin for 250W into 8Ω
  • Size: 4.95" (125.7mm) x 3.75" (95.3mm) x 1.45" (36.8mm)
    • 6 x M3 / 4-40 mounting holes
  • Required Power Supplies for Module (Hypex SMPS1200A100 provides all required voltages)
    • +/-36V (+/-30 to 42.5V) - Amplifier Power Rails
    • +15V (11 to 16V) - Mosfet Driver Supply - Referenced to -36V rail - 100mA minimum
    • +/-12V (+/-10 to 22V) - Analog Supplies - 100mA per supply minimum

Full test results published here:…8/#post-786323

Reminder… preorder pricing ends May 31st.

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For those that have ordered bare boards, orders have started shipping. Be on the lookout for an email from shippo ( with your tracking information.

For those that ordered completed modules orders will start shipping in about 2 to 3 weeks.

For those interested, the preorder is now also open for the fully assembled and plug and play units here:

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For those that my be interested my article in Compound Semiconductor: