Woo's New Flagship WA33
Dec 17, 2022 at 11:29 PM Post #2,551 of 3,214
My second Tak 274B in less than three years fried tonight. Makes me very scared about the 2A3 quad. Back to the 596 for now. Hope the Elrog is back in stock soon. I cannot keep buying these things every 18 months.
Any warranty left on them?
 
Dec 17, 2022 at 11:33 PM Post #2,552 of 3,214
The first one fried at 13 months and they would not budge a bit. This on I bought used and it lasted about 16 months. So no joy.
 
Dec 17, 2022 at 11:46 PM Post #2,554 of 3,214
I have had the stock EH or Sovtek, KR, WE, USAF and Takatsuki. The Tak stands above all but man I can’t rent the damn thing for $1K every 15 months.
 
Dec 18, 2022 at 3:02 AM Post #2,556 of 3,214
My second Tak 274B in less than three years fried tonight. Makes me very scared about the 2A3 quad. Back to the 596 for now. Hope the Elrog is back in stock soon. I cannot keep buying these things every 18 months.
My first fried after a little over a year too. I’m scared for my 2nd one, which is over a year old and my Tak 300Bs which are also over a year old. Taks fry too quickly and they only give you a 1 year warranty. Meanwhile other manufacturers charge less and offer 3 year warranties. I’m considereing never buying a Tak again if mine fry in a little over a year again. A 1 year warranty is not acceptable, especially with how much the Tak’s cost.
 
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Dec 18, 2022 at 4:48 AM Post #2,557 of 3,214
I’ve been using my KR 274B Monday - Saturday and using the Tak 274B on Sunday only since I keep hearing they fry fast.

Smooth Sundays are nice.

I also want to try the Elrog though. They sound promising!

Luckily I am liking KR 274B more than Tak.
Tak has better resolution but bit thin and bright, KR add body which I like.

By the way, how long KR 247b likely to last, mine is few months old with around 200hrs play time.
 
Dec 18, 2022 at 10:30 AM Post #2,558 of 3,214
After two frying in 1+ years I am done with Tak 274B. Fool me once blah blah blah. I will wait for up to 4 months for Elrog to come back in stock then look for a KR 274B. The KR comes in second among the other rectifiers I have tried. I will not pay $3K for a Western Electric and for those of you who know me EML is absolutely not an option.
 
Dec 18, 2022 at 11:28 AM Post #2,559 of 3,214
Have you guys considered you are running a 5U4G spec with 274B which naturally is going to limit the life of your tubes?

I know it's acceptable to run both but there is no free lunch when doing so.
 
Dec 18, 2022 at 1:39 PM Post #2,560 of 3,214
Have you guys considered you are running a 5U4G spec with 274B which naturally is going to limit the life of your tubes?

I know it's acceptable to run both but there is no free lunch when doing so.
The WA33 uses 4 2A3’s and 1 274B ( along with 4 6C45’s ). Are you saying the users mentioning longevity concerns were using the 274B’s where the 2A3’s should go?
 
Dec 18, 2022 at 1:52 PM Post #2,561 of 3,214
The WA33 uses 4 2A3’s and 1 274B ( along with 4 6C45’s ). Are you saying the users mentioning longevity concerns were using the 274B’s where the 2A3’s should go?
The Wa33 actually uses 4x 2A3's and 1x 5U4G rectifier.

The 274B can be used as direct replacement for 5U4Gs but might not run under ideal parameters, which can negatively impact longevity.

Similar to how you can replace 2A3s with 2.5V 300Bs (i.e. Sophia Electric or EML)
 
Dec 18, 2022 at 1:52 PM Post #2,562 of 3,214
The WA33 uses 4 2A3’s and 1 274B ( along with 4 6C45’s ). Are you saying the users mentioning longevity concerns were using the 274B’s where the 2A3’s should go?
No. The WA33 is specced with the 5U4G. Not as primary 274B.
 
Dec 18, 2022 at 2:27 PM Post #2,563 of 3,214
And Woo Audios recommended upgrade rectifiers tubes are both 274B(Takatsuki and Sophia). Apparently Woo does not share your concerns.
 
Dec 18, 2022 at 2:33 PM Post #2,564 of 3,214
And Woo Audios recommended upgrade rectifiers tubes are both 274B(Takatsuki and Sophia). Apparently Woo does not share your concerns.
Does that make Woo correct? By example. you could ask Takatsuki, right.

My point was the 274B isn't a direct-replacement in the sense of whole equivalence.

And the consequence is simple, many tube manufacturers are getting slagged without proper context.

To be fair.
 
Dec 18, 2022 at 3:35 PM Post #2,565 of 3,214
Yes it does make Woo right. I trust the manufacturer of my amp.
 

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