If you check well the body of Sumile is exactly the same of My Sonic Lab Signature Gold
Then Mr.Asai worked in the last years in Air Tight where produce the cartridge in My Sonic Lab,so could be a copy of them,but i never listen,could be also better,but this is the same family,i think.
I hope so. English is not Gian's first language so I am not so sure. In any case, I hope it is clear that It is MY and not Airtight.
The specs would lead me to believe that it is not an Air Tight/MY clone which have different internal impedances and output from Asai-san's carts. It looks like he's using his own formula.
That is my understanding also. This new cartridge reminds me of my MSL Sig. Gold which I think has an impedance of 1.4 ohm and an output of 0.5 mV, but the body looks very similar.
A major difference between the two carts is the Sumile uses a boron cantilever whereas the MSL uses duralumin, a hard aluminum alloy. Another is weight - Sumile 14.5g vs MSL 10g due to the gold plated stainless steel base of the Sumile.