Hi !
What tubes are those? RF pentodes ? I can not find much information about them...
Thanks
These are the best audio preamp DHT tubes and drivers ever made!
Made for the German PTT and so made to last. Made from the 1920's.
Open nickel anodes and truly amazing open and detailed. Unlike you ever heard.
I never read an article that did not praise them as the best.
But truly rare and expensive.
John
Made for the German PTT and so made to last. Made from the 1920's.
Open nickel anodes and truly amazing open and detailed. Unlike you ever heard.
I never read an article that did not praise them as the best.
But truly rare and expensive.
John
The Valvo Ba/Bas are €80/Pair or €140/Quad
The Siemens will be up for auction on Ebay in a few days.
They will be substantially more expensive.
The last pair I sold on Ebay a year ago went for $510
Offers for the Siemens can be made by email: audionics@gmail.com
This way you can asure that you get them before auction.
The Siemens will be up for auction on Ebay in a few days.
They will be substantially more expensive.
The last pair I sold on Ebay a year ago went for $510
Offers for the Siemens can be made by email: audionics@gmail.com
This way you can asure that you get them before auction.
The Valvo are identical to these but gold colour.
http://cgi.ebay.com/2-Tube-Aa-VALVO...pt=Vintage_Electronics_R2&hash=item35ad6db59f
Only my price is 50% of that price.
N
http://cgi.ebay.com/2-Tube-Aa-VALVO...pt=Vintage_Electronics_R2&hash=item35ad6db59f
Only my price is 50% of that price.
N
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The Siemens Ba and the Valvo Aa are available from "Ask Jan First" for €20 and €14 each, respectively.
Ask Jan First ® ; electron tubes and more
John
If you look carefully or ask Jan you will see that they are sold out for years. The prices are from many years ago too.
The glass tipped Siemens Ba (SIF PTT2) are super rare and if any are offered it is always the modern version Ba(s) that is offered.
I aksed Jan and he told me the Valvo ara sold out and the Siemens are the late 1960's shouldered version. Not the glass tipped 1920's version.
I'm not surprised that the Valvo sold out. I mentioned his website to a guy who sells an amp with the Aa as the first stage, so he may have bought the rest. I bought eight of them and Jan mentioned to me that there was a run on them. They are the same as the ones in this auction: 2 Tube Aa VALVO Triode Globe Box Plate Akin of Bas - eBay (item 230542914975 end time Dec-24-10 15:08:08 PST)
John
John
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