Anthem STR Power Amplifier
Technical specifications
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Channels
2
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Power Output RMS (Per Channel) 8Ω
400 W
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Power Output RMS (Per Channel) 4Ω
600 W
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Power Output RMS (Per Channel) 2Ω
800 W
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Power Bandwidth
91 kHz (-3 dB at 400 W into 8 ohms)
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Input Sensitivity
2.1 Vrms
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Input Impedance
10kΩ (RCA), 15kΩ (XLR)
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Voltage Gain
29 dB
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Slew Rate
30 V/μs
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Frequency Response
8Ω = 20 Hz – 20 kHz ± 0.1 dB 4Ω = 20 Hz – 20 kHz ± ?? dB 2Ω = 20 Hz – 20 kHz ± ?? dB
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Channel Separation
101 dB (100 Hz), 98 dB (10 kHz)
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Crosstalk
n/a
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Signal-to-Noise Ratio
121 dB (IEC-A, ref. 400 W)
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Total Harmonic Distortion + Noise
0.0007% (1 kHz), 0.004% (20 kHz) @ 400 W
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Intermodulation Distortion
ITU-R (19 kHz + 20 kHz) 0.0006% @ 300 W SMPTE (60 Hz + 7 kHz) 0.0016% @ 300 W
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Damping Factor
(20 Hz – 1 kHz) 360
Description
The STR Power Amplifier is the beating heart of a world-class sound system, a statement in unwavering performance. As our flagship power amplifier, it is engineered to deliver immense power and audiophile-quality output in a single, elegantly designed component.
Designed, engineered, and Crafted in Canada, the STR Power Amplifier delivers 400 Watts/channel into 8 ohms, 600 Watts/channel into 4 ohms, and a staggering 800 Watts/channel into 2 ohms—all with both channels driven. This is true no-holds-barred performance, providing immense headroom and effortless dynamics.
Inside, a true dual-mono design with two colossal transformers and multiple high-current output devices ensures the most subtle details and dynamic peaks are handled with equal authority. Outside, its beautifully designed cosmetics—including a 7-inch graphic control display and secure, highly conductive audiophile connectors—make it a perfect sonic and visual match for the STR Preamplifier.




