Converting old amp to IEC power receptacle?

Here's an inline socket - you can attach it to the cord and not have to change the chassis. - shorten the cord for better performance.

http://www.futurlec.com/Plugs-IEC.shtml

I used a dremel to cut the hole when I installed an IEC in my Harman Kardon amp. A little bit of filing to clean it up and in it went. This amp also had a two conductor power cable so I left the ground unattached.
I also rewired the the AC cable from the IEC with higher gauge wire. Probably a two hour job.

Did it! I ordered one where they had the cutout template online, so I just used a drill bit and a Dremel I used a big vacuum cleaner to hopefully suck up the metal shavings as they were created. Then I blew the whole thing clean with compressed air. So, by the time the receptacle arrived in the UPS, it was all ready to go. There's still a length of thin 18-gauge wire inside the amp, but it's just between the power board and the IEC receptacle. There's no ground on my amp, so I just left the center plug of the IEC empty.

Way to go!
Replacing the 18 gauge inside the amp is way simpler than swapping out the receptacle. Might as well go all the way.

Foodchain11 please provide a link to the cutout template.

What Timrhu said +1. Get rid of that bottleneck with better wire. Replacing the fuses with HI-FI Tuning or Synergistic Research will make a difference too(if you haven't already).