Sony VFET Amps

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[FONT=Arial, sans-serif][FONT=Arial, sans-serif]Recently there has been renewed interest in SITs, partly because two audio companies have stepped up to the plate and spent the money required to fabricate new devices suitable for audio power amplifiers. The first of these is Digital Do Main in Japan, which has produced two audio amplifiers based on newer versions of original Yamaha Silicon parts.[/FONT]The other is First Watt, which arranged for a production run of a new SIT device using a newer Silicon Carbide process by SemiSouth.[/FONT]

But where get SIT Devices now ?

same problem like before !

High-tech manufacturer SemiSouth Laboratories closes after decade-plus run
 
Acronman sent me 8 pair of 2SJ28 F rank and 2SK82 E rank to see how
well they get along together. Assuming they do, this will enable the use of
these available parts.

More later...

:cool:

You are indicating we can't use pairs of 2SJ28/SK82 with same KE-33 rank (i.e. 2SJ28 F rank and 2SK82 E rank could be a better match) ?
Rethinking, I guess I got it :While pairs with KE-33 are still available for purchase the stock is too low already - not enough for 10 DIY Sony Vfet amps ?
 
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More later...

:cool:
Today electronics have posibility to operate in nano scale.

Carbon nanotube field-effect transistor - Wikipedia, the free encyclopedia

other is a Vertical Slit Field Effect Transistor

Vertical Slit Field Effect Transistor

Single electron transistors or graphene be relatively new but miniaturisation and precision is huge to compared with early days and cost is lower...
make mass production of triode like characteristic transistors be very apreciated in audio aplications any news about?
Maybe Linear Systems make them real?
What Yours Science-Fiction-Transistor :bulb:?

AT&T Archives: Genesis of the Transistor - YouTube

Lovely documentary from Bell Labs
Have Fun
:knight::treasure::ghost:
 
:bulb:
 

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No, Acronman still has a few of matched ranks. On my todo list this week is
to verify operation of his remaining N and P ranks together for use by DIYers,
which will open up some more supply before the bitter end.

:cool:

Without response to my question:bawling:

Anyway its nice to say thanks to Mr Pass for his guidance in Diyers builds.
Hope KE and KF can be work together:bulb:
Greetings
:knight::treasure::ghost:
 
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