Kagtha, thank-you for posting this solution. I followed your detailed instructions (see post #85 in this thread) and was able to modify three 16x60 amplifiers in about an hour and a half. They all work great!If you can solder then you will be able to use your 24V power supply (19-30V also seems to work fine) to activate your Crestron Amplifier without any popping issues or requirements like pressing the "little red bypass" button in the back. You will not be required to keep power going to the Amp @ all times any longer, you will still need to figure out your own way to use a 12V trigger.
BTW, I wont be judging your soldering skills as mine are worse than yours :frown: