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Anthem STR Power Amplifier

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  • $ 5,999

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Anthem STR power amplifier is the beating heart of a world-class 2-channel sound system. It delivers massive power generation, with audiophile-quality in a smart component. Designed, engineered, and crafted in Canada, the STR power amplifier delivers 400 Watts / channel into 8ohms with both channels driven, a massive 600 Watts / channel into 4ohms (both channels driven) and 800W in 2ohms, for a great performance. 

Inside, the STR power amplifier uses two colossal transformers and multiple high-current output devices. Outside, its beautifully designed cosmetics, including a 7-inch graphic control display and secure, highly conductive audiophile connectors provide a great match to the STR preamplifier.


  • 400W / 600W / 800W into 8 / 4 / 2ohms
  • Cascoded complementary feedback input stage
  • Sixteen bipolar output devices per channel
  • Dual mono design
  • Massive toroidal transformers
  • Soft turn-on
  • Four power on / off options
  • No rail fuses
  • Advanced load monitoring technology
  • Graphic front panel display for the power meter, status, and easy setup navigation


  • Power Amplifier: Impedance:
  • 8Ω: 400W
  • 4Ω: 600W
  • 2Ω: 800W
  • THD (400W): 0.0007% (1kHz), 0.004% (20kHz)
  • IMD (300W):
    • ITU-R (19kHz + 20kHz): 0.0006%
    • SMPTE (60Hz + 7kHz): 0.0016%
  • SNR (IEC-A, ref. 400W): 121dB
  • Frequency Response (20Hz - 20kHz): ± 0.1dB
  • Power Bandwidth (-3dB at 400W into 8ohms): 91kHz
  • Slew Rate: 30V/μs
  • Damping Factor (20Hz - 1kHz): 360
  • Channel Separation: 101dB (100Hz), 98dB (10kHz)
  • Input Impedance: 10kΩ (RCA), 15kΩ (XLR)
  • Input Sensitivity (For 400W into 8Ω): 2.1Vrms
  • Voltage Gain: 29dB
  • 120V Version: In countries where the line voltage is 120V, this product operates from a single phase AC power source that supplies between 108V and 132V at a frequency of 60Hz.
  • 220-240V Version: In countries where the line voltage is 220, 230, or 240V, this product operates from a single phase AC power source that supplies between 198V and 264V at a frequency of 50Hz.
  • Power Consumption:
    • Standby: 310mW
    • Idle: 65W
    • Typical Playback Levels: 150W - 300W
    • High Playback Levels: 600W - 1100W
  • Dimensions: 6 3/4"h x 17"w x 18.5"d
  • Weight: 60 lbs


WARNING: California Residents - Proposition 65. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to



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