Aleph Ono and FET matching

[rsbay]

Hello,

I know I have to match the input FET's Q10 ... Q13 (2SK170) in the
moving coil part of the Aleph Ono. The question is how I should do
this and which are the parameters I have to take care of ?

Should I also match other devices in this circuit ?

Regards

Ralph

[WALTER BURKHARD]

Fetmatcher circut

[rsbay]

Hello Walter,

thanks for your reply. Do you know with Idss is preferred for the Aleph Ono ?

Should I also match the IRFD9110 ?

Regards

Ralph

[wuffwaff]

Hi,

you will need a fairly low Idss to get the highest gain out of the ONO. I think it was around 4mA. There´s a large thread concerning this.
If you can´t get 170gr´s you can also use bl´s with different source resistors but then you can´t choose the highest gain setting. This shouldn´t be a problem with all but the most silent MC´s

William

[VS]

Originally posted by WALTER BURKHARD
Fetmatcher circut

Hi,

By the PCB color it seems you also have build a XOno clone. The original XOno have 2SK170BL or GR? And what about 2SK389 also ?

Can you resume all the diferences bettewn Ono and XOno?

Best regards,
VS