I’m sorry, but Denon DL103R on stock Technics SL1210 tonearm is a total mismatch. Low compliance MC Denon 103R works fine only on high mass tonearms. Technics stock arm is ok for MM cartridges of medium compliance, it can handle 30cu compliance cartridges with kab silicon fluid damper, but your Denon is the oppisite story.
I don’t know anything about new technics tonearm, but do you think it’s better than top notch Technics EPA-100 or EPA-100 mk2 or EPA-500 (or any other vintage tonearms like Lustre, Saec, Micro etc) you can easily mount on custom plinth with SP10-mk2 for much less than 4k in total (most likely for half price) to spend the rest on some amazing cartridges.
I don’t know anything about new technics tonearm, but do you think it’s better than top notch Technics EPA-100 or EPA-100 mk2 or EPA-500 (or any other vintage tonearms like Lustre, Saec, Micro etc) you can easily mount on custom plinth with SP10-mk2 for much less than 4k in total (most likely for half price) to spend the rest on some amazing cartridges.