I've done searches, and I've found several relevant threads, including:
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1071960668&openfrom&1&4#1
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1015294796&read&keyw&zzwalsh
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1116082199&openfrom&6&4#6
However, I'm trying to find direct comparisons between Microwalsh and the older models. Perhaps I've overlooked something in my search, but I haven't found a direct comparison.
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1071960668&openfrom&1&4#1
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1015294796&read&keyw&zzwalsh
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1116082199&openfrom&6&4#6
However, I'm trying to find direct comparisons between Microwalsh and the older models. Perhaps I've overlooked something in my search, but I haven't found a direct comparison.