Thanks you so much, the answers to my questions were very interesting.
Those answers open the way to other questions at all.
I can start to plan my new amp, first of all I will make a 3D CAD design of the metal frame with Hashimoto OPT and PT/Choke on top in order to find the best placement.
The PT-240 will be the ideal choice, it will be fantastic with 230V/50-60Hz primary winding.
Just for information, I agree with you about special order (Hashimoto needs a minimum quantity to produce it!) so how much it may costs with this special European primary winding ?
Choke Coil C-10-200W:
What means Series (10H/200m) / Parallel (2.5H/400mA) operation ?
Would I use series connection or parallel one to fit the Shishido schematic ?
How will I have to connect the numbered tap on the choke coil to make a series / parallel connection ?
I calculated the minimum inductance of the choke coil on the CLC in the Shishido design by my own...it should be greater than about 1,6 Henry (With a C1=47uF and a C2=220uF).
So I think I have to overtake at least 2.5H/200mA values for the choke coil.
How much does may costs a set of:
2x H-20-3.5U (Yes it is superb !)
1x PT-240 (Special order with a 230V/50-60Hz primary winding when available)
and delivery to Italy by mail ?
Are there Hashimoto's distributor here in Europe ?
Thank in advance