Hello! This is my first time visiting this forum and I am sure it won't be my last. I have a project in which I need to replace some mercury relays because they won't fly international. To give some more info the project is designed to have three amplifiers hooked up to a switch box and choose which amp we want to use on the output to one set of speakers. It has to switch virtually to the point when it is not noticeable, thus the relays. These relays are rated 480VAC, 60A, 2 Pole, Normally Open, and the open/close timing is approx. 50ms. I need to replace with different relays and need to be around the same specs and honestly don't know a whole lot about relays. I know the basics and thats about it. If anyone knows about some high current/high voltage/fast switching relays that would be great. Would solid-state relays be a good replacement?