HELP PLEASE : Toroïdal PSU for Classe A Pass A3 board

Hi amigos,

Just got this Pass A3 modules. I want to build a double Mono board.
But looking for the appropriate Toroïdal PSU.

Recommend PSU is : AC20V-0-AC20V

I am pretty lost with those Toroïdal stuff... I have one 300VA with 2x17V secondary but I guess it is nor the right one....

TTS300/D230/17-17V BREVE TUFVASSONS - Transformateur: toroidal | 300VA; 230VAC; 17V; 17V; 8,82A; 8,82A | TME - Composants electroniques)

The AC input board has 3 faston inputs, any idea ?

Can someone give any appropriate Link (Europe would be better) :

Pass-A3.jpg


I found this but I don't want to buy via Aliexpress...

Transformateur toroide en tissu noir GZLOZONE 500VA pour passe A3 amp 19V 0 19V 19V 0 19V L3 26 | AliExpress
 
Thanks read it.
I wonder the following as well :

Can I connect a + - 30V SMPS 300W (30-0-30 VDC) to the AC module input ?

Usually 20 V AC = 30 V DC
So I guess that I can use any SMSP 30V DC / 300W and the Diode Bridge will automatically convert DC to AC and vis versa.

6196_SMPS300RS_1.jpg