The power cord looks really cheap for such a quality amp. A polarized 2
prong male end to plug into the wall and only 2 prongs on the amp. What
can I replace this with and not be unsafe? Seems all aftermarket power
cables have 3 prongs.
There is nothing unsafe about what you have now. Millions of homes are wired that way, and even more appliances. There are even power cords that LOOK like they have a ground, that is you see a ground pin on the plug, but they are not grounded because nothing is connected inside. They do this because it is one of the easiest ways to improve the sound of any power cord.
Jeff Smith of Silversmith was at my place recently. Jeff recommends this and even carries around a cheater plug to demonstrate. Sure enough the cheap black rubber power cord everyone gets for free did sound better than expected when used with the cheater plug. So if you already have no ground then don't expect as much improvement as you otherwise would get going from black crap to a quality aftermarket PC. It will be better, just not as much as otherwise.
