CDs Vs LPs

Confirmation bias is a straw man argument. The person stating it as a truth, (he believes it must be true, so he thinks it has to be true in reality) then never backs up with any proof. The proof is on the person claiming it is confirmation bias. And where is the proof? Nowhere. All it is is the person claiming it is confirmation bias believing that is what it is.

@Elizabeth  +1. Well said!

"Confirmation bias" is not a "strawman argument," Elizabeth, it is a psychological reality.  When you spend a lot of money on an audio upgrade, you disconnect the old crap and hook up the new stuff.  You typically have neither the time, interest, equipment or capability to leave the old crap hooked up so that you can do instantaneous A/B comparisons with the new stuff.  Additionally, because audio memory is so extremely perishable, without an instantaneous comparison, a high end upgrade could sound like anything....marginally better or worse but you couldn't tell....couldn't remember.

But know this.  If you spend enough money, the new stuff will sound better.  Guaranteed...pretty much.  Not a bad thing if, in the end, it makes you feel good.

Also know that confirmation bias can lead to the experimenter interpreting results incorrectly because of the tendency to look for information that conforms to their hypothesis, and overlook information that argues against it.  It is a significant threat to a study's internal validity, and is therefore typically controlled using a double-blind experimental design.

No REAL audiophile does, nor will he believe the results of, contradictory double-blind experimentation.This is why Joe Nobody hooks up a $2000 power cord to his Oppo disc player and reports that the new playback is now "Jaw Dropping!"

Clearly LPs over CDs.
Well then, my LP gears (phono preamp, stylus, arm, turntable) are much more expensive than my CD player, costing about $7K vs $2K.
The most expensive stylus I have had is Ortofon SPU Gold Reference, which is about the same price as the most expensive CD Player I've ever had, Arcam FMJ CD23.
I wonder if $5000+ CD player would come close to my LP gears, but so far, I have not tried any CD players that cost that much.

dynaquest4 shows the way to know.. By going back to the old stuff. "Do you hear a difference?" yet he is 'certain; no one ever does this???                            
Guess what.. I do swap back and check on how stuff changed. Blows the theory right out of the water....        
For ihcho.. I used to have to use an extra tube preamp for my digital gear before I bought a Marantz SA-10 ($7000 US) Now my digital is better than the vinyl. But the digital also costs more than the vinyl setup in my current rig.I am certain if I added a better cartridge and phono box... I could reverse the scenario.