WTB Soekris 2541. I am located in Brooklyn, NY. Willing to pay a fair price based on condition.

In this instance, the 275A it won't work I don't think.  Assuming you run B+ on the plates of 425v anyway.  The 275A is rated to only 300 volts based on the WE datasheet (the WE datasheet for the 300B states it is only rated to 400 volts http://frank.pocnet.net/sheets/084/3/300B.pdf, but I know...

I think Dave was following up on the 275A issue.  The 275A only has a plate dissipation of 17 watts (as opposed to the 300Bs 36 watts).  Are the amps run such that the current and voltage on the plates would be less than 17 watts?   Shawn

I want to clarify that I don't dislike the bass.  It is that I am not used to the bass slam in my ears the way the Dharma's do it.  The K10s are different, more like a closed speaker, not a ported one.     Shawn

I have no bleach. My pair is linear through the mids region. If anything, the bass slam from these being overly aggressive is my only complaint. I don't mean bloated, I mean in your face. For the last decade I have only used IEMs and CIEMs. The bass is non-existent on any CIEM I own compared to...

Mine come in tomorrow.  I will let you know what I hear....

It is probably a cathode bias. You can read about that on numerous sites. I don't love power amps with cathode bias, even if all preamps are done that way.

I think the 274b has a big voltage drop and people love that tube.

Do you make the 300B amp with switchable driver tubes?  If so, which ones?  Has anyone used a 2C50 in any amp yet?

Awesome.

Wow. Who made the silver transformers? What values does the impedance switch select (how many ohms)?

Yep.  And at current prices/exchange rate, you are talking $1420 or so.

Right. Just an FYI.

FYI: Tak has increased prices by 5,000 yen per tube.

I don't mind a deep line.  I have waited a long time for stuff in the past.  Can I confirm I am on the list though?   As to the Elrogs, I think that it is a business point.  If they fail in many amps, Elrog would be better served to change them so they don't have to deal with warranty claims...

That is an interesting question.  Should they change the resistance to "normalize" their tube?  I think they would have to as they will sell a lot fewer tubes if they only work in select amps.   Glenn, where can you find the queue for a build from you?  I just wonder how deep the list is.

I have heard Elrogs can be prone to failure. Have they fixed that issue?

I am joining the queue (I hope Glenn agrees to have me).  I will go down the 300B path as well.  I am likely to order a new pair of TA-300Bs to compare to my Western Electric 300B pairs once the time comes. 

I know, but I am sure it was not sold as a fake originally.   

Here is another example of a Sylvania faked into a WE.  I am done posting on this, but here you go:  http://page18.auctions.yahoo.co.jp/jp/auction/w124821733

OTL. That explains it. Never owned an OTL amp.

6 is crazy unless that is just rolling tubes. If there are 6 sockets to fill, I would spend too much in tubes, unless they were all 12SN7s or 13D1s.

Also, be careful, there are a lot of old 274B fakes that are Sylvania's (or worse) with either rebases or fake bases.  One way to tell is often the font on the tube or the date code.  As far as I know, if WE made it with a WE label and it is post 1946 it will have a date code that is either...

I meant base, not socket, but you got what I meant.

I just saw one of those pop up on Ebay.  I have 40s and 50s 274Bs from Western Electric and Sylvania.  The mica plates on the top are a dead giveaway that that tube was made by Sylvania.  You can see pictures of the Sylvania one like I have in this Japanese auction...