When I was refreshing/upgrading ST-70s, I found that certain improved cords(ie: Zu Births and Mothers), could be fit into the chassis, through the original cord’s hole, with a large grommet. Didn’t want to butcher the original metal. The ARC preamps I owned, both got minor surgery, to fit IECs, plus internal wiring(beside my usual PS mods). Aluminum chassis are nice/easy to work.
Vintage preamp/amp power cords
Let me just say I don’t want to start a discussion if power cords make or don’t make a difference. I’m just curious to know if folks with older gear with captive power cords mostly considered a replacement with IEC type plug. The power cord on my McIntosh MC2200 is literally a little better than a high quality modern lamp cord, But it’s been there for almost 30 years. The main objective of the replacement would be safety as well as Sonics, if any.