top of page


Two-Channel Revolution. 


The STR Power Amplifier is the beating heart of a world-class 2-channel sound system. It delivers massive power generation, with audiophile-quality output in a smartly designed component.      


Designed, engineered, and Crafted in Canada, the STR Power Amplifier delivers 400 Watts/channel into 8 ohms with both channels driven, a massive 600 Watts/channel into 4 ohms (both channels driven) and 800W in 2 ohms, for true no-holds-barred performance.      


Inside, the STR Power Amplifier uses two colossal transformers and multiple high-current output devices so the most subtle details and dynamic peaks are handled equally well. Outside, its beautifully designed cosmetics, including a 7-inch graphic control display and secure, highly conductive audiophile connectors provide a perfect match to the STR Preamplifier.   



Features & Functions  

  • 400W / 600W / 800W into 8 / 4 / 2 ohms
  • 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
  • Available in Silver and Black Finishes
  • Crafted in Canada 

Anthem STR Power Amplifier

  • STR Power Amplifier

    Output (per channel, continuous, 20 Hz - 20 kHz, <1% THD) 
       400 Watts  8 Ω
       600 Watts  4 Ω                 
       800 Watts*  2 Ω         


    Total Harmonic Distortion (THD) at 400 W
       0.0007% (at 1 kHz)
       0.004% (at 20 kHz)


    IMD at 300 W
       0.0006% AT ITU-R (19 kHz + 20 kHz)
       0.0016% at SMPTE (60 Hz + 7 kHz)  


    SNR, IEC-A, ref. 400W, 121dB

    Frequency Response, 20 Hz to 20 kHz, ± 0.1 dB 

    Power Bandwidth, -3 dB at 400W into 8 ohms, 91 kHz  


    Slew Rate:  30 V/μs     


    Damping Factor (20 Hz to 1 kHz), 360   


    Channel Separation 101 dB (100 Hz), 98 dB (10 kHz)      


    Input Impedance 10 kΩ (RCA), 15 kΩ (XLR) 

    Input Sensitivity (for 400 W into 8 Ω), 2.1 Vrms         

    Voltage Gain: 29dB



    Power Requirement

    120V version: In countries where the line voltage is 120V, this product operates from a single phase AC power source that supplies between 108V - 132V at a frequency of 60 Hz.  

    220V-240V version: In countries where the line voltage is 220V, 230V, or 240V, this product operates from a single phase AC power source that supplies between 198V and 264V at a frequency of 50 Hz. 


    Power Consumption
       Standby: 310 mW
       Idle: 65 W 
       Typical Playback Levels: 150 W - 300 W    
       High Playback Levels: 600 W - 1100 W              



    6-3/4"H x 17"W x 18-1/2"D (not including power cord) 

    Weight : 60 Lbs  


    *Maximum 3 seconds due to high current draw.


    Specifications are subject to change without notice

bottom of page