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Replacement For Toshiba 2SK170/2SJ74
Replacement For Toshiba 2SK170/2SJ74
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Old 14th March 2019, 02:15 PM   #271
NicMac is offline NicMac  Italy
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Replacement For Toshiba 2SK170/2SJ74
From who are you about to purchase?
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Old 14th March 2019, 02:43 PM   #272
Skylar88 is offline Skylar88  South Africa
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Quote:
Originally Posted by quyda View Post
Hi,
I'm about to purchase from this guy for my FW F5 project, are you telling me that they are likely fake too?
Anywhere reputable I can buy from, preferably Toshiba's

Not Toshiba's, but Linear Systems from the DIYAUDIO STORE should be fine too.

Otherwise get Toshiba's from Spencer in Singapore.
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Old 14th March 2019, 02:44 PM   #273
bloozestringer is offline bloozestringer  United States
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I ordered a matched quad for another project from Boozhound.
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Old 15th March 2019, 12:31 PM   #274
quyda is offline quyda  Viet Nam
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Quote:
Originally Posted by NicMac View Post
From who are you about to purchase?
Sorry, forgot to include ebay link
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Old 15th March 2019, 12:31 PM   #275
6L6 is offline 6L6  United States
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Replacement For Toshiba 2SK170/2SJ74
Punkydawgs is 100% genuine parts.
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Old 15th March 2019, 12:41 PM   #276
Stixx is offline Stixx  Germany
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Quote:
Punkydawgs is 100% genuine parts.
^^^^^^^^^^^^^^ ^^^^confirmed.
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Old 15th March 2019, 12:43 PM   #277
quyda is offline quyda  Viet Nam
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Quote:
Originally Posted by 6L6 View Post
Punkydawgs is 100% genuine parts.
Glad to know! What's the difference between BL and GR btw?
And do you know why
Toshiba 2SJ74 + 2SK170 LAB MATCHED OCTET to 0.03mA / 4mV (10mA range)
is CHEAPER than
Toshiba 2SJ74 + 2SK170 LAB MATCHED OCTET to 0.03mA / 4mV (7-8mA range)
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Old 15th March 2019, 02:03 PM   #278
Dennis Hui is offline Dennis Hui  Canada
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Replacement For Toshiba 2SK170/2SJ74
That's Idss grading. GR: 2.6mA ~ 6.6 mA. BL: 6mA ~ 12mA.

There's probably more request for 7 to 8 mA parts from buyers.
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Old 15th March 2019, 02:15 PM   #279
kstagger is offline kstagger  United States
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Ditto: When I redid one of my Aleph J boards, I used 2SJ74s from punkydawgs - can confirm they are the real deal.
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Old 16th March 2019, 08:14 AM   #280
meanie is offline meanie  Singapore
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Click the image to open in full size.

Click the image to open in full size.

The J74 were too low to be listed in the BL grade, most likely fakes.
But the K170BL tested fine.... Here are the 50pcs samples, will probably order more of these. A few pair is almost perfect IDSS match !

Korg triode B1, here i come ...yeah !
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