What To Do With Those 2SJ28's

[Soundhappy]

I watched the video's but did not hear any news about the V-fet SE amplifier. I do hope it is coming.

Circuits are still being designed, with several candidates. They all
occupy 4 TO-3 holes per channel on a bar which fits on the larger sinks
in the store.

I have a couple things to wrap up, and then you can expect kits early 2019.

Last news

 

[Soundhappy]

I watched the video's but did not hear any news about the V-fet SE amplifier. I do hope it is coming.

Was BAF 2018 V-fet kit information from Stereophile

Burning Amp 2018 Set For September 30 in San Francisco | Stereophile.com

Best regards

 

[wdecho]

Last news

I forget about the promise of early 2019. Thanks for the reminder. I was hoping for some info at the BAF 2018 but I will use patience. I have been looking forward to the circuit and kit for some time now.

 

[Soundhappy]

What to Do with Those 2SJ28's ?
Build a new class A of course
Get fews "new" ones to test , JS and JD-33 grade from vintage Sony Vfet amp.

 

[Zen Mod]

oh yeah , you're nutz in all 3 colors

 

[Soundhappy]

Actually more colours with 2SJ28 JA-33 and 2SK60 and 2SJ18 T-54 grade

 

[El Reino]

What to Do with Those 2SJ28's ?
Build a new class A of course
Get fews "new" ones to test , JS and JD-33 grade from vintage Sony Vfet amp.

Tell us more

 

[Soundhappy]

My luck was find fews used 2SJ28 in swap meet from Mr. J Didden " Linear Audio " magazine director.
Sunday evening if free time I do vfet's test's and open boxes with two medium horn's
who is "the new brick's" for 3-voices bi-amplified system build.
Heavy weight Technics tourntable SL-7 included Greetings

 

[Nelson Pass]

The design for the new DIYaudio VFET kits uses one VFET per channel.

The N channel and P channel VFETs have separate artwork, and slightly
different performance.

Each channel goes onto a bar similar to last time which holds 4 TO-3
devices and mounts on the DIYaudio store heat sink hole pattern.

The output stage is a follower, and has a socket for different front ends.

Availability should be March or so.....

 

[Berny]

Each channel goes onto a bar similar to last time which holds 4 TO-3

Of these 4 TO-3 parts, how manny are Vfets? (In parallel?)

Thanks

 

[vdi_nenna]

The output stage is a follower, and has a socket for different front ends.

Is there a simplified schematic?

 

[Dennis Hui]

Very exciting. Thank you Papa!

 

[Nelson Pass]

Is there a simplified schematic?

No. It's going to be a surprise.

 

[dantwomey]

Very exciting. Thank you Papa!

I second that!

 

[R-K Rønningstad]

No. It's going to be a surprise.

SIT input stage and “Beast of 451 JFET output stage”!?
Merry Christmas to Papa and all you followers, and thank you for both entertainment and sharing of knowledge.

 

[plasnu]

Great News!

My luck was find fews used 2SJ28 in swap meet from Mr. J Didden " Linear Audio " magazine director.
Sunday evening if free time I do vfet's test's and open boxes with two medium horn's
who is "the new brick's" for 3-voices bi-amplified system build.
Heavy weight Technics tourntable SL-7 included Greetings

The magazine page attached looks like an SIT amp with an output transformer. Are you going to make one like that?

 

[Dennis Hui]

No. It's going to be a surprise.

Ohhh.....even better. Much fun ahead.

 

[Soundhappy]

The magazine page attached looks like an SIT amp with an output transformer. Are you going to make one like that?

TKS45F323 SIT is much easier to discover a meteorite in the house garden.
Esoteric & rare & exotic & cost new was ~ 570$ one pcs.

 

[WBS]

So, how many do you have Soundhappy?

 

[Soundhappy]

Only papers with schematics on my bench.

Interesting question Who build with TKS45F323 ?