Have tried a pair between deHavilland superverve and Bam[use Nirvana SL's between Bam and Music Reference RM-200 with Pursangs to Merlins]. They do make a possitive difference.A back ground that is quiet, quiet, quiet and I have JPS dedicated line. Guiatars and plucked strings sound more natural and more controled bass. Have listened only a few hours. Can not add much more. Peace, jlowens
