2SK1530+2SJ201

[tinitus]

Does it not bother you at all that the amp might have sounded better with correctly matched devices?

not one bit
Im happy if it sounds good 🙂

If not, why buy matched devices at all🙂

like I said, it helps to ensure they are genuine 😉

besides, apart from a standard F5, I also plan to use them in multiples for a classAB, and the matching is needed 😉

 

[kgrlee]

Matching FETs

... use Idss matched K170/J74 even if Papa clearly says that they have to be Yfs matched.

Within a FET family and probably within a type of construction, it appears that Idss, Yfs & Voff are well correlated.

I don't have much experience matching MOSFETs but I do with small signal JFETs used in mikes ... the 2n54xx & u3xx range

You certainly see this in the datasheets. If Idss is matched, it is likely that Yfs in the sensible current range is matched and so will Voff
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Anyone have a pointer to EKV models for these MOSFETs?

 

[Jallhalla]

please, lets not confuse the poor man more than 'need be'

Poor man? Thanks for that one!

Of course n - p matching makes a difference, even if its not necessary. I dont HAVE to build the f5 either, even though it feels like it right now. 🙂

But no one knows where to find these as only two unmatched pairs? Seems like blues also have matching quads.

 

[NicMac]

As Zen Mod told me a few days ago: choose your own poison🙂