A better question might be where are the volume attenuators set at normal listening levels with a particular amplifier. Look here then do a broad search.
http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1137965724&read&keyw&zzpremier+series
Contact the manufacture for more definitive information...
http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1137965724&read&keyw&zzpremier+series
Contact the manufacture for more definitive information...