I removed the captured power cord from a vintage Harman Kardon amp and installed an IEC socket. I also removed the original 18 gauge cable that ran from the throughout the amp up to the power transformer and replaced it with 14 gauge wire. It was a fun project, but I won't say I heard a difference.
If you can do it yourself, I say go for it. If you're going to pay a couple hundred dollars...that's a different question.
If you can do it yourself, I say go for it. If you're going to pay a couple hundred dollars...that's a different question.