Hockey Puck SIT 2SK180 by Tokin source NOS

[Soundhappy]

Watanabetomoaki quads are precisely matched with curve tracer
Two pairs(4pcs) THF-51S (2SK77,2SK180,2SK182) TOKIN SIT (V-FET) NOS Original | eBay and 2SK182ES Matched quad (4pcs) of 2SK182ES (2SK77,THF-51S)TOKIN SIT V-FET NOS Original | eBay

 

[Soundhappy]

Without matched paralell pairs for push-pull output stage You need just two single triodes for stereo amplifier.

1pc 2SK182ES (2SK77,2SK180,THF-51S)TOKIN SIT (V-FET) NOS Original | eBay Genuine transistors

 

[Soundhappy]

It's a 2SK180 teaser Anniversary today

 

[davidjt]

That's a co-incidence - a couple arrived in today's post. Must be a good sign. Just need to decide what to do with them.....

 

[codyt]

Same, haven’t decided what I’ll do with them. Leaning toward Sissysit.

 

[Soundhappy]

The situation is much better than in 2015, they are still available and Mr. Pass has plenty of them in stock today.
Maybe this allow for small runs of commercial amplifiers and fresh DIY articles for Greedy Boyz ?

http://www.roehrentest.de/SIT_EN.pdf

 

[Soundhappy]

After watching Mr. Guttenberg interwiev with Mr.Pass the answer is:
new Pass Labs , with the special parts inventory
and mysterious "allow us yet new avenue for amplification"

 

[Soundhappy]

Very long life span, no need output transformers, no degeneration,
have gain and the price is much more affordable than 211,845 or high power Eimac vacuum tubes.
B+ is less 1000V..
Find some huge heatsinks & VA psu transformer with filter capacitors
and You ready for class A amplification OTL with transistor triode
1pc 2SK182ES (2SK77,2SK180,THF-51S)TOKIN SIT (V-FET) NOS Original | eBay

 

[Soundhappy]

Japanaise DIY blog K180シングルアンプ（1） - hohon77’s diary
with some other GaN Fet exotica transistors inside , SIC Mosfets for curious amateurs etc.
パワーアンプ III （5） - hohon77’s diary
Bump

 

[Soundhappy]

Enjoy 2SK180 | THF-51S are back in stock Huurraayy

Rough Matched pair (2pcs) (without data) of 2SK180 (2SK77,THF-51S)TOKIN SIT | eBay

Rough Matched quad(4pcs) (without data) of 2SK180 (2SK77,THF-51S)TOKIN SIT | eBay

1pc THF-51S (2SK77,2SK180,2SK182ES)TOKIN SIT (V-FET) NOS Original | eBay

Roughly matched pair (without data)THF-51S (2SK77,2SK182) TOKIN SIT NOS | eBay

 

[sierra_gva]

@soundhappy

Happened to be in Montpellier today. All the bars and restaurants are closed but "Place de la Comédie" and the old town was so full of people. Too many people for my liking so instead I ordered my THF-51S parts from Tomoaki. Since you seem quite versed in the subject of SIT amps, I am looking forward to your ideas, comments and contribution when NP will publish his designs.

 

[Soundhappy]

@ Sierra_gva

Enjoy Montpellier , have a good time !
In the south weather is on the hot temperature side
drone montpellier on Vimeo

Before C-19 was

Montpellier on Vimeo

 

[Soundhappy]

@soundhappy

..I ordered my THF-51S parts from Tomoaki. Since you seem quite versed in the subject of SIT amps,
I am looking forward to your ideas, comments and contribution when NP will publish his designs.

Cool OK, I am doing preparation for two cute mono blocks with Tokins.
Santa Claus last year brought me large heat sinks for this purpose.
Now next step is looking for psu transformers.
Stay in tune & best regards

 

[analog_sa]

Japanaise DIY blog K180シングルアンプ（1） - hohon77’s diary

A very interesting blog, thank you!

 

[Samuel Jayaraj]

Which is the more versatile device to buy? THF-51S or 2SK180 or 2SK182?

I own a pair of matched THF-51S from Prasi. I am inclined to using them in SissySIT monoblocks.
And I also have a set of PCBs of SIT3X. But no second pair of SITs.

Asking for your valuable suggestions. Thanks.

 

[Soundhappy]

@ Samuel Jayraj

If you ready have this SIT-3X pcb's then next logic step is buy 2SK182ES and IXYS pucks IMHO.
Get one SIT piece for spares, who know the future..
With small modifications all Tokin can play in the same amplifiers circuits,
and sound the same or very similar Best regards

 

[Soundhappy]

A very interesting blog, thank you!

+ Kaneda DIY blog with V-fet schematics etc. :^) Enjoy

 

[Samuel Jayaraj]

Soundhappy, that you advise to get 2SK182ES for my SIT3X boards is spot on. Except that the designer himself says that you can do with a N channel MOSFET instead of a SIT in that position. This is such a deterrent for me
So I am thinking of swapping SITs from SIT3X to future designs. Hence, the question.

Having SissySIT playing with IRF 9240/240 Mosfets, the sound of which I really like, using THF-51S for a real SissySIT is a no brainer.

 

[Soundhappy]

Maybe look at curves trace can stimulate your decision ?

Hockey Puck SIT 2SK180 by Tokin source NOS

If you use mosfet substitute for SIT-3X build
then waiting for new future Mr.Pass design is the best choice I agree with You.
Have a nice day

 

[egellings]

Those "hockey pucks' look like TO-3 cases to me.