70% of the time it can be heard every time. I agree the difference can be heard and I used to spend the time but I gave up years ago messing with polarity. Both my preamp and DAC have switching. Problem is often the entire recording may not be inverted but possibly in the studio a mic or one or more piece of equipment may be out out of phase from the rest but not all. I find the more my system has become refined the less I mess with some of these tweaks but might revisit as both remotes have invert button so why not. Cool thing is on my preamp from the vents on the lid, the blue LED’s turn off when polarity is inverted so it’s easy to see from my seat.
Why don‘t servers/players incorporate polarity switches
Why is it that most digital servers don‘t incorporate the ability to switch polarity whereas in my experience only ~20% of recordings are in polarity? It‘s a standard feature in Puremusic and other PC/Mac based software and really makes a noticeable difference in sound quality. So much for progress and golden ears...