2-Channel (stereo) Amplifier with Source Override

Connect an Alexa Echo Dot (Voice Assistant/Streamer) into Source Input 1 and let Alexa take priority over whatever is connected to Source Input 2.  Source 2 is heard until a signal is detected from Source 1 at which point the zone will instantly (less than 0.2 seconds) be switched to Source 1.  Our proprietary auto-detect-and-switch circuit detects input signals at significantly lower volume levels than standard auto-sensing circuits and without creating "false positives". Use the Delay knob to set how much time should pass without a signal from Source 1, from a couple of seconds to a few minutes, before returning to Source 2. A rotary volume control is provided on the front panel, but for most installs this will be set to a fixed "maximum" position when each of the connected sources includes a variable volume output. Common connections for Source 2 include the variable audio output from a TV or the variable audio output from a zone in a distributed home audio system. 40 watts X 2 into