I also have a Muse 9 Sig v3 and have also asked this question with no reponses. I have called Muse and of course they assure me it is better, but I can't find a dealer to compare and no responses from audiogoners makes me think it may only be a prototype.
Muse Model 9 Signature vs Model 10
I own and love my Muse Model 9 Signature (series 2) DVD/CD player. Best CD play back I've owned. I'm considering a trade/upgrade to a Model 10 and would like any opinions/advice from others who have done the same or made comparisons between the two (including video comparisons). Thanks