This can be useful when using a preamp with Home Theater Bypass mode together with a surround sound processor in the same system. 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. Even when driving lower or complex impedance loads, the result is audibly superior performance. This keeps output impedance remarkably low while making more power available to the amplifier. The amplifier sections are Direct Connected to the power supply capacitor bank. Soft Turn-OnĪ sequence-controlled soft turn-on significantly reduces power line transients and in-rush current during start up, thereby preventing accidental tripping of circuit breakers.
While some amplifiers oscillate or run out of power when driving lower impedance loads, the STR Power Amplifier remains perfectly stable under all conditions. The amplifier channels are thus able to deliver stable, continuous power at maximum output without affecting one another, even when driving the lowest impedances. As well, both the power supply impedance and internal cabling inductance are minimized to deliver a clear path for maximum power. Massive Toroidal TransformersĬonservatively rated, in a low-profile design shaped to minimize hum, the low-impedance toroidal power transformers - one for each channel - make no sacrifices when it comes to delivering a continuous supply of pure, clean, low noise power. The use of multiple bipolar output devices in class AB configuration also dramatically reduces distortion while ensuring extreme linearity, extensive bandwidth, and stress-free reliability.Įxperience 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. Sixteen Bipolar Output Devices Per ChannelĪnthem engineers incorporated sixteen bipolar output devices per channel, resulting in peak production that is effortless and instantaneous, cinching even the most challenging material. Transistors in critical stages are hand-selected and matched for lowest possible distortion. Eight low-noise bipolar input devices are configured in a complementary active-load cascoded feedback arrangement for reduced distortion, exceptionally linear response and superior bandwidth. The STR Power Amplifier benefits from our proprietary input topology-a unique departure from the classic differential input stage. Cascoded Complementary Feedback Input Stage