DIY SONY VFETS pt 3 - Got VFETs?

[SOelker]

I own 2 Tonkin THF-51 luckily. Do the N-Channel OS Kits work with Tonkins or only with Sonys?

 

[ItsAllInMyHead]

^ Read posts #1 through #24.

 

[guyome]

I own 2 Tonkin THF-51 luckily. Do the N-Channel OS Kits work with Tonkins or only with Sonys?

Yes, it will work

 

[SOelker]

Thanks, ItsAllInMyHead, got it.
I just am too eager to build and listen my first V-FET amp.

So, I‘ll wait a bit more.
Or check out Zen Mods Sissy SIT R.3 first.
Enjoy.

 

[SOelker]

Thanks for replying guyome!
I couldn‘t find any reference to the Tonkins though.
Have I missed somethin?

 

[ItsAllInMyHead]

In post #24. Exactly what you're looking for from the circuit's designer himself. 😀

This may also be of interest - https://www.diyaudio.com/community/threads/diy-sony-vfets-os2-official-thread.384256/

 

[Stanislav]

Question:
Would Yamaha 2SJ38 and 2SK98 be suitable for this project, taking into account they are lower rating parts?

 

[SOelker]

In post #24. Exactly what you're looking for from the circuit's designer himself. 😀

This may also be of interest - https://www.diyaudio.com/community/threads/diy-sony-vfets-os2-official-thread.384256/

Thanks again, ItsAllInMyHead!
Now I have found it.
stupid me.

 

[glenv6]

I was also hoping the THF-51 would have been included in this round. And we wait! 🤓☕

 

[SOelker]

Sorry for dumb question No 2 - I‘ll shut up after that:
I also own some Russian SIT KP-926 - TO3 package - P Channel (I assume) - unfortunately high Ciss of 1600pF.
Would they work with a P Channel kit?
Thanks again for your kind help!

 

[guyome]

Should be n-channel those ones

 

[R-K Rønningstad]

If we had P-channels….. (if we had som eggs we could have egg and bacon if we had bacon)

 

[SOelker]

Should be n-channel those ones

Thanks guyome!
I have read somewhere they would be equivalent to Sony SK 60 (but much worse). Datasheet also speaks about P-FET. So that’s why I assumed them to be P Channel.

 

[Rewind]

Was hopinh to use this kot with the Toki THf-51S, but I can wait for another design or stick to SissySIT. The DIy Sony kit is just so neat and quiet in my horn rig.

 

[jamayfie]

And another question to Jason: the store stacks the Mark Johnson cards; but how about the " Input stage “Nelson P” boards? ". I had hoped for those too including the Edcors. At least the PCB.

You can register your interest in a Nelson Pass front end card here:

https://airtable.com/shr2SThv16FVl1R3o

and they will be made available if there’s enough interest.

 

[guyome]

Is the aluminum bracket sold with the kit ?

 

[thompsontechs]

So do we need to buy 2 boards, or is it a pair? What exactly does, "parts kit'" mean in the purchase. Is it the board and parts needed t complete other than VFETs, or is it just a board, or two boards?

Also, I have the 2SK82 and the 2SJ28 dual die, so I guess I will need to look at the original and tweak accordingly? Maybe 6L6 will take a bite at that when he does the write-ups.

JT

 

[Nelson Pass]

Stupid question to Jason, but is a kit a stereo kit with two output cards? So two channels in the box?
[In the previous marvelous build, the left and right, if I remember correctly, were both upward facing with back-side power inlet connections mirrored in the same place, referenced to the back. >>Ben]

Two channels in the box.

 

[Nelson Pass]

Is the aluminum bracket sold with the kit ?

Yes

 

[Nelson Pass]

Question:
Would Yamaha 2SJ38 and 2SK98 be suitable for this project, taking into account they are lower rating parts?

I think so. I don't know the optimal R1/R2 ratio, though.