OPUS 21

Can anyone with an Opus 21 who uses a Ridge Street Audio amblical advise me of the performance of this upgrade please?

adampeter01-31-2009 1:12pm

cruz123 Details Discussions Posts This discussion Message User 586 posts 02-02-2009 at 12:34am Copy Comment URL Report Comment Edit Delete http://forum.audiogon.com/cgi-bin/fr.pl?fcabl&1200431508&read&keyw&zzumbilical