Thiel Owners

jayant  Not often, but surprisingly, polarity invert makes some of my piano-only CDs sound more forward and sharp.  Also, there are several pieces on Helmut Walcha's  Bach's Organ Works that sound less dense. 
Could be my imagination; however, I think it helps. 
As for the the BP6 and BP26, the separate power supply for the 26 might help, although my reason for switching to the 26 was to get the balanced outputs.

brayeagleI have heard the BP-26 with and with the separate power supply. It never disappointed me one way or another. I can report that the SST/SST2 series of power amps respond very well to a Tubed pre-amp.
Much Thanks! for address the reverse polarity query. I suspect that some CD titles out there were recorded with polarity issue(s)?
Happy Listening!

Correction: with and with out a separate Power Supply.

I know that there is some polarity jumble out there. In the 1980s early CD period, the BBC did a study that determined "most people" preferred aggressive sounds (trumpet, drums, etc.) to be in reverse polarity so that the cone moves inward on its initial transient attack.

In today's world of large track counts and greater reliance on recording technologies, it seems that more records are made in proper polarity and don't require any diddling.   

tomthiel
Good to see you today. The information that I have read referred to the Classical music genre bring the most affected. It is an interesting subject.
Happy Listening!