Go for it. Cut the cord about 6 inches from the back of the unit, and retain the stock pc remnant. Install an IEC on the stub and start your pc auditions. If none of them work any better than stock, then you can always reinstall the remnant onto the amp, either by splicing or complete internal replacement. As long as you have the skill for this type of procedure, then the only thing you have to fear is fear itself. The gains could be rather significant.
Just my .02
Good luck.
Just my .02
Good luck.