Anthem STR – Power Amplifier 2 Channel Stereo Power Amplifier 2x400W


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The Anthem 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.

STR 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

Experience the immense dynamics of up to 800 clean watts delivered into demanding 2-ohm loads, or 400W into 8 ohms/600W into 4 ohms continuously and with both channels driven.

Soft Turn-On
A sequence-controlled soft turn-on significantly reduces power line transients and in-rush current during start up, thereby preventing accidental tripping of circuit breakers.

No Rail Fuses
The amplifier sections are Direct Connected to the power supply capacitor bank. This keeps output impedance remarkably low while making more power available to the amplifier. Even when driving lower or complex impedance loads, the result is audibly superior performance.

Power On/Off Options
In addition to the traditional options for power-on, the STR Power Amplifier allows trigger mode and audio signal sensing to be combined so you would never need to think about turning the amplifier on or off manually. This can be useful when using a preamp with Home Theater Bypass mode together with a surround sound processor in the same system.

Power Amplification
-Impedance: 8Ω / 4Ω / 2Ω
-Power Output (per channel)
-(Continuous, 20 Hz – 20 kHz, <1% THD) 400 W / 600 W / 800 W
-THD: (400 W) 0.0007% (1 kHz), 0.004% (20 kHz)
-Frequency Response (20 Hz – 20 kHz)      ± 0.1 dB
-Power Bandwidth (-3 dB at 400 W into 8 ohms)  91 kHz
-Input Impedance: 10kΩ (RCA), 15kΩ (XLR)

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

-Height: 17.2 cm
-Width: 43.2 cm
-Depth (not including power cord): 47 cm
-Weight (unpacked): 27.3 kg

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