Moved Audio Quest cable to my DAC. WOW

I just moved my Audio Quest power cable to my DAC and noticed a more realistic open and better detail. 

Did you replug the cables BEFORE you moved them?

EVERYTHING EXACTLY as before? [i.e. different length that moved the power cables so one is not over the power transformer of another piece of equipment]

Line voltage checked?

Line noise checked?

Heavy load devices also operating? Hair dryer? Refrig? Heat Pump?

Engineers and physicist have beliefs just like everyone else. Selling stuff alters perspective.

Lack of rigor and confirmation bias accounts for most of what the untrained hear.

In both cases above, measurable parameters were the result of the changes: Pointing Angle and Boat Speed.

In both cases the boats were optimized for expected conditions. Had the '83 race been a flat drifter series, the outcome could have been the other way.

Too often in the HiFi space claims are made with no data to back them up. And being universal when they clearly cannot be in divers systems and rooms.

It’s a curse having an electrical engineering background.

I thank my Dad for having a real HiFi in the 50’s rather than some piece of furniture w a radio. Lenco transcription turntable, Bogen tube amp and a University CoAx in a box bigger than I was.

And a Mom who sang and played piano.

And as military brat, I got to hear lots of live, unamplified music in parades and concerts.

The Bogen had playback curve selector to match the label. Finding the best sound for the label was my first tweaking experience, about age 5 😎

I knew great sound long before I was an engineer.

Good engineering requires verification and replication. All too often ’improvements’ have untested secondary causes. Or specific to a particular instance.

I'm not saying it's illusion but that the ascription is not necessarily the proximate cause.

In the case of the power cord / DAC there are innumerable other factors that can account for the SQ change claim.

Having designed and built professional recording equipment, I was ever on the alert not to be fooled by randomness.

 Mcintosh doesn’t believe in power cables of quality for some reason.

McIntosh are designed by engineers. They have test gear. They don't have to 'believe'.

If someone could point me to a measured difference between amplifier power cables at the speaker, I'd be eternally appreciative.