maybe i can get some input on this. I just bought a cheap Sherwood receiver with Digi-Link III to trigger the amp (and it works ). I've hooked up an oscilloscope to the Digi-Link III output and saw a 5.5 Volt step, followed by a 12V spike. So the question now is how do I reproduce that pattern without the receiver, so I can trigger amp? Do you think there is any way to modify the standard 12-V trigger on most other receivers to do this pattern? I've tried to manually approximate this pattern via a crude breadboard circuit, but nothin'...I'm obviously missing something else. Any clues?