Dear @stereo5 : Obviously with all respect.You arrived to Agon in 2008 and you have 6,283 posts that are a lot and that could means you were/are participating in hundreds of threads in the forum.
So, it is weird that from all those years you never had the opportunity to read any of the over 850 SPU references/posts in Agon.
Nothing wrong with that,only that the SPU cartridges are perhaps the most famous Ortofon cartridge models.
Never mind, it's just that I was thinking " loud " in that issue. Sorry.
R.