phase control on BAT VK pre amps

You will only hear the effect of inverting the phase if you have a recording with only 2-3 mics in true stereo.

50% of recordings are out of phase anyway, so this can get really tricky.

The Chesky disc has two demos, in which phase is reversed. The first with one trumpet(actually two tracks, one reversed). The next with a full jazz band, which they reverse the phase on, without telling you at what point. My son and I both noted the exact moment of reversal, different days, no prior discussion. I own a number of recording(CDs and vinyls) that I have marked for reverse phase playback. As Ralph mentioned; there are many more in which no differences will be noticed.

"My son and I both noted the exact moment of reversal, different days, no prior discussion. I own a number of recording(CDs and vinyls) that I have marked for reverse phase playback. As Ralph mentioned; there are many more in which no differences will be noticed."

Keep in mind that the Chesky CD is made for demos. Most likely, they selected tracks that emphasize whatever quality they want you to hear.

"Keep in mind that the Chesky CD is made for demos. Most likely, they selected tracks that emphasize whatever quality they want you to hear." GEE, Ya think? Chesky recorded those tracks, and reversed the phase, to demonstrate the Wood Effect, and enable one to see if they can discern it. That WAS the point!

" I own a number of recording(CDs and vinyls) that I have marked for reverse phase playback."

If you can hear the differences, why mark them? Are you sure you're not dealing with psycho acoustics here? It seems likely that you wouldn't know the difference if the albums weren't pre marked for you.