Having spent some hours with my Etsuro Gold cartridge, I like to share some experiences and lessons learnt.
The Gold was fitted into the Ikeda 407 (old SS silver mat version) and a MY 2020 Acoustical Systems Axiom Tonearm.
(still fitted in the Axiom)
The Ikeda 407 hosted the Etsuro Urushi Cobalt Blue before, the difference to the Gold was brutal obvious.
(Both connected to 30ohm impedance on my Boulder 2008 Phonostage)
It very difficult to make a fair comparison, if one of the carts is better in every aspect.
So I changed to the Axiom, to replace the Soundsmith Hyperion.
This was more in a similar league. But to my surprise ( I like the Hyperion a lot) the Gold was better as well.
At least the close by Hyperion performance let me begin to fine tune and to understand the Gold better.
D Brakemeier (as myself) prefers Titanium screws to fit the cartridge to the headshell. I am using TechDAS screws with Titanium washers. The Etsuro Cobalt prefers a high torque and becomes more precise, the body and the base plate is A7075 alloy.
Using the similar torque for the Gold ended up in a not "best" performance The Sapphire base plate of the Gold definitely prefers (in the Axiom / Arche headshell) a more soft torque to sound free and with high resolution.
The range you can modify the sound of the Gold with a different headshell torque is higher, than I ever have realized it on another cart. With a too high torque the Gold even can sound dull, slow and with too big voices/instruments.
Now I can understand, that some listeners have heard the Gold in a not satisfying way.
I would assume, that the stability of the headshell will have a similar effect.
The Sapphire seem to be a very special and sensibel base plate material.
Setting up VTA , VTF and Antiskating took longer than expected, the Gold is very responsive to any change, but in a tricky way.
Around the best measure, the Gold starts to sound that kind of really good, that I was very often close to stop the iteration to find the maximum possible performance. In comparison a Colibri needs to be on spot to sound good, the Gold has a much wider area of good performance.
But to get the "over and above" performance of the Gold, the fine tuning work is similar to adjust a Colibri.
But than you can hear all the characteristics, which are already written into this thread, thanks to Mike !
It looks like that I have found my new reference combination, Etsuro Gold plus AS Axiom Tonearm