Invert Polarity in Digital Domain


Just curious if anybody has heard any differences with CD players which have the option to invert absolute polarity in the digital domain.

I have the Levinson 390S and I hear a clearer (especially voices!), albeit narrower soundstage with polarity setting to normal (interestingly, the player powers up to polarity=invert as the default). This holds true over a wide variety of discs, and for all types of music. The inverted absolute polarity setting is often more involving, though. My preamp and amp do not invert polarity.

I do not hear any differences at all by inverting polarity on the preamp (in the analog domain), by the way.

Thanks for any input.
hgabert

Showing 5 responses by hgabert

Thanks for posting some of the labels and their general polarity settings (as you have experienced it)! I need to test that.

My speakers are B&W 802 Nautilus, and I am not sure if they are "polarity-coherent." For example, the well-known audiophile war horse, Holly Cole's "Don't Smoke in Bed," has the piano either a little muddy, but bass and voice nicely defined (Polarity=normal), or, piano prominent and clear, but bass and voice recessed (Polarity=inverted).

On the DG Pollini: Chopin "Etudes, Preludes, Polonaises," I hear more piano texture with polarity inverted, and more sheen at the top end with polarity setting to normal.

What setting do you usually leave it on?
Thanks, Dopogue.

This is very helpful!!!

P.S. I think I know why I don't hear any differences by switching the preamp's polarity (I have the VTL 5.5): It's a phase reversal (according to the manual), and so might not be a true polarity inversion. I thought the two were the same, but apparently not.
Hi George, this sounds very interesting, and thanks for the post. However, I'm confused: are you saying that there is one absolute polarity for all (or nearly all) digital media, and that the above label lists are bogus? This is, if you have speakers with 6 dB first-order Butterworth crossovers, and if your entire chain is polarity-consistent, if I understand you correctly.

I did experience some truth to the label list posted by Dopogue (even without my speakers exhibiting the 6 dB first-order Butterworth crossover, or so I believe). For example, on my system, most Deutsche Grammophone discs sound correct in inverted mode, whereas Philips Classical sound mostly better in normal mode!

This is based on some extensive comparisons over the last two weeks, all with classical music, and mostly chamber music (that's where I hear any polarity-based differences the easiest).
Edesilva: Could very well be that the phase invert button on my pre-amp is dysfunctional, as it does make a popping sound when I engage it. Who knows?

Undertow: Yes, "direct/non-inverted" can sound more direct and even compressed, but it depends on the label. E.g., most of my Philips Classical now sound wonderful in non-inverted/direct mode.

I'm really grateful for all the comments from everybody, I feel I can now enjoy my music again (and I know why!).