I would go with hospital grade receptacles (Hubbell, Pass Seymour) and save a lot of money to get the same results. The objective is to cover and grip the power cord prongs as tight as possible and that's what HG receptacles do.
But I think vintage guitar amps will do a lot better with a thicker gauge power cord. I remember plugging my Twin Reverb into a cheap power strip/extension and it sounded as if a blanket was placed over it.
But I think vintage guitar amps will do a lot better with a thicker gauge power cord. I remember plugging my Twin Reverb into a cheap power strip/extension and it sounded as if a blanket was placed over it.