Anthem STR Power Amplifier

This dual-mono powerhouse can drive any pair of speakers

Our customers rave about the clean, powerful sound of Anthem's receivers and separates. Those qualities reach a pinnacle with the STR Power Amplifier. This stereo amp actually contains two powerful independent monoblock amplifiers. And this is one dual-mono design that provides the "full monty": each channel has its own circuit board, heat sinks, and toroidal power transformer.

Anthem still builds amplifiers the old-fashioned way using tried-and-true Class AB design. Transistors in critical stages are hand-selected and matched for the lowest possible distortion. The STR will deliver gobs of stable, continuous power at high output levels, even when driving low-impedance speakers.

Astonishing power

The STR Power Amplifier produces 400 watts per channel into 8 ohms and a mighty 600 watts per channel into 4 ohms, with both channels driven. Anthem even rates this amp into 2 ohms — at 800 watts per channel — which tells you how confident they are of its robust design.

Anthem's engineers used 16 high-current bipolar output devices per channel, to deliver effortless, instantaneous power that can handle even the most challenging material. Using multiple output devices helps reduce distortion, and increases stability to ensure years of thrilling sound.

Incredible dynamics

Very few stereo amplifiers, even "audiophile" models, use dual toroidal power transformers, like the STR does. These low-impedance transformers ensure ultra-quiet performance and virtually unlimited dynamics. The full power and impact of all your music will come through intact.

Advanced protection

Anthem's exclusive ALM (Advanced Load Monitoring) constantly monitors internal temperature, current, and voltage to ensure safe, uninterrupted operation. ALM is not in the signal path, so it never gets in the way. Instead, ALM engages instantly, but only in the most extreme circumstances, to protect the amplifier and speakers from damage, while lowering the chance of a line fuse blowing during an over-current condition.

Made in Canada, respected around the world

For more than two decades, Anthem has been making award-winning high-performance audio/video equipment for music and home theater. Anthem power amplifiers are designed, engineered, and built in Canada.