Power cord connectors

In my case they did not make any difference in my tube phono as well as tube phono preamp. They did eliminate a strange ticking noise that my tube power amp was making.
However they made a huge difference in both of my class D sub amps. Tightened up the bass and in one case really beefed up the very lowest octave.

Well, one thing's for sure, those big hollow dumaflaches resonate.

I recently purchased some gold plated copper connectors off of ebay and found they provided a noticeable improvement and only $24 for mains and iec - only took a week to arrive - great service

Have them on my DIY Furutech cables

They replaced some gold plated brass connectors