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ARC REF 3, Nagra PSA, & Phase Inversion

Last night, while I was auditioning a Nagra PSA for my primary system, at the suggestion of a friend, I inverted the phase on the REF 3. The sonic effects were remarkable. The speakers disappeared further. The sound stage became much more defined and deeper; it extended a little more forward, quite a bit more backward, and even a little wider. Imaging, which had always been quite good, was also markedly improved. And the overall musical presentation was more relaxed (for lack of a better word) and musical (to my ears). I was really shocked but also quite pleased with the changes I heard!

Can someone explain what exactly goes on with phase inversion and how it can cause the changes I heard (and perhaps other changes that occurred and I did not recognize them)?

Thanks in advance!
4musica44107

Showing 2 responses by ryder

ryder
1,738 posts
 
4musica44107,
May I ask what other preamps have you used with the Nagra PSA apart from the ARC Ref 3? Have you tried a passive pre with the PSA? What are you thoughts on other preamps used with the Nagra PSA? Thanks in advance.
ryder
1,738 posts
 
Hi Steven,

Thanks for the prompt response. Reason I asked the question is I am considering the PSA but cannot justify spending the same amount of money on the Ref 3 preamp. Although I have no doubts the Ref 5 would evidently be a major step-up from the Ref 3, that unit is financially beyond my reach. Was hoping a more modestly priced preamp would still cut it with the PSA. Anyway I will have a chance to listen to the Nagra in my system soon and see how it will match with my Harbeth speakers.

Cheers.
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