Frank,
I have a Shelter 901/SME(309 and VI) on Michell Gyrodec to Audio research PH3SE. Gain is more than enough. Believe it or not Shelter's 0.5mv rating is giving equivalent output of 0.9mv of Benz Glider or 1.0mv output of Van Den Hul cartridges. My preamp volume level is actually much lower when I use Shelter than 0.6mv Koetsu.
I have a Shelter 901/SME(309 and VI) on Michell Gyrodec to Audio research PH3SE. Gain is more than enough. Believe it or not Shelter's 0.5mv rating is giving equivalent output of 0.9mv of Benz Glider or 1.0mv output of Van Den Hul cartridges. My preamp volume level is actually much lower when I use Shelter than 0.6mv Koetsu.