Dear @mijostyn : With a removable headshell tonearm design you always can take away mass, AT/Denon have headshell as ligther as 4gr.-5gr. .
In the other side the 545 review that Soundlabs posted in its site came by Enjoying Music and guess what, the speakers were reviewed mated precisely to the Pass 350 !
@lewm the issue on the coupled transformer is not rocket science but just common sense that for what you posted I can think is different from mine. That's all. Pun is not intented. Period with.
R.