The Corda has a PSU built in so I don't think you really wanted any information there. For power cables, I'm using a DIY Ven Haus with mine but got to audition a couple others. They do matter but there seems to be a point of diminishing returns hovering around ~$50. People here have gone on and on about the Virtual Dynamics so if you can still get one for $50, I might go that route if I were you. (It's normal price is $100, I think.)
For surge protection, there's no gentle way to say this: most surge protectors are complete crap. The good ones are by a company called Brick Wall and unfortunately cost ~$250. This may still be worth it to you if you have a great deal of other equipment plugged into the same Brick Wall such as your PC or Home Theater. If you do spring for the Brick Wall, do get the "audiophile" version as each of its connectors are isolated and that matters a lot if you end up plugging in monitors or different audio components. Keep in mind that this is the best solution for *surge protection*, not for filtering. In my opinion, protecting your equipment is more important than noise filtering but you get really ambitious, you'll want to pair a the Brick Wall with a regenerator or filter. Jude has reviewed some of these and is currently using one in conjunction with his Brick Wall. Honestly, although I think the power stuff is worth checking into, it's not your biggest bottleneck in your Corda. If you're going to spend that much effort and money, look into upgrading the Corda (see KurtW for that) or other amplifiers first--there's more to be had there. Surge protection isn't bad anyway though, especially if you have a lot of incidents like I've had.