Anthem STR Stereo Power Amplifier

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.

Power amplifier

• Impedance 8Ω 4Ω 2Ω
• Power Output (per channel)
• (Continuous, 20 Hz - 20 kHz, <1% THD) 400 W 600 W 800 W*
• * Maximum 3 seconds due to high current draw.
• THD (400 W) 0.0007% (1 kHz), 0.004% (20 kHz)
• IMD (300 W)
• ITU-R (19 kHz + 20 kHz) 0.0006%
• SMPTE (60 Hz + 7 kHz) 0.0016%
• SNR (IEC-A, ref. 400 W) 121 dB
• Frequency Response (20 Hz - 20 kHz) ± 0.1 dB
• Power Bandwidth (-3 dB at 400 W into 8 ohms) 91 kHz
• Slew Rate 30 V/µs
• Damping Factor (20 Hz - 1 kHz) 360
• Channel Separation 101 dB (100 Hz), 98 dB (10 kHz)
• Input Impedance 10kΩ (RCA), 15kΩ (XLR)
• Input Sensitivity (for 400W into 8Ω) 2.1 Vrms
• Voltage Gain 29 dB

Power requirement

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

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

Dimensions

• Height 6-3/4” (17.2 cm)
• Width 17” (43.2 cm)
• Depth (not including power cord) 18-1/2” (47 cm)
• Weight (unpacked) 60 lb (27.3 kg)