Opt primary impedance for audionote M10 phono pre

[noyan]

Hello,
I am planning to build M10 tube preamp. Does anyone know the primary and secondary impedance values of the output transformer?
Thanks
http://www.diyparadiso.com/schemas/pre amps/m10 schema duidelijk.gif

 

[Koonw]

Audio Note
TRANS-027 impedance ratio 33:1 or 19.8K:600
Can use Tango np126 or Lundahl LL1540

 

[Koonw]

Here is additional info on Chinese web site

Trans 027 data:
PRI DCR 397，Inductance 110H，Sec DCR 20 Ohms *2 , Impedance ratio 33:1

 

[noyan]

Thank you very much!