[parbaked]

  I for one would like to get my hands on a 45 amp asap.  Been doing some reading and from what I've seen most get into the 45 game with a Yamamoto or a Korneff clone.  In the headphone dept there  is the EC 4-45.  I got a pair of Tango irons pick for a SE build but still undecided on what kind of design to use.  Hope after my 300b from Glenn is done and when funds are available Glenn can come up with a design.  Planning to use an RGN1064 as rec and maybe a c3g or c3m as the Yamamoto.  Most people say that after you get used to the 45 signature sound its hard to listen to other tubes.  Specially for vocals and jazz music.  

Hi George...here's a pic of a Yamamoto clone with vintage Tango iron for you.

Spoiler: Warning: Spoiler!

 

I am sure Glenn can build a moar better one!
 
I agree that the 45 tube is special. I much prefer it to the 2A3 or 300B but I'm only using speakers.
I have not had any luck with 45 Globes so I'm enjoy later, cheaper 45 ST. I like them all.
At least the NOS 45 ST are less expensive than 2A3 and 300B tubes!

 

[parbaked]

  One of my amps uses 45's or VT 52's which are an upgraded/special 45.
 
I am hooked on the VT 52's.
 

Hi Stavros...you just had to say it!
My TK45 amp has the same iron as yours but I don't have the switch to change the OT filament voltage so I can't use VT52 or 50s unless I rewire.
You should not be tempting me.

 

[Neogeo333]

Steven your teasing me with that pic.   And now that one can also use vt52 and 50 with a switch it's even more tempting.   
 
Your right in the price of those globes type  alright. The prices seem to keep going up.   Then again 50s and vt52 ain't cheap either.   Too bad the 45 and 50s have limited compatibility with speakers.  

 

[rosgr63]

Raytheon VT 52 Engraved Base Box Plates are great tubes.
 

 

 

[parbaked]

  Steven your teasing me with that pic.   And now that one can also use vt52 and 50 with a switch it's even more tempting.    

The Yamamoto and Korneff only use 45 tubes.
I would choose the Yamamoto clone but I'd buy a real Korneff, built by Jeff, if I come across one.
 
The amp that can use 45 and VT-52 is by Attilio Caccamo of Tektron Italia.
His amps have a switch that changes the output transformers filament voltage between 2.5V, 5V and 7.5V so you can run 45, 2A3, 50, VT-52 or 300B.
It is an interesting amp to have if you collect these tubes.
You can roll tubes without rolling amps!
I have one of his 45 amps but it doesn't have the switch so I'd have to rewire the output transformer voltage each time to change tube types. This is why Stavros should not tempt me with his 45 Specials!
 
Tektron sell their transformers, so it might be possible for Glenn to build an amp that can use 45, 2A3 VT-52 and 300B tubes. http://www.tektron-italia.com/

 

[Neogeo333]

Another great tube of that variety is the 182/482 and 183/483 similar to a 45 but with 5v filament.  Wow,  a nice iron that can use all those low power dht would be perfect. 
 
Let see if I can find out how much the wife is worth. 

 

[Xcalibur255]

Then you've got the 71A and the 10Y if you can live with less than a single watt of power.  Both very special tubes.  Glenn used to use the 10Y as the driver stage for his 300B designs before the C3g supplanted it.  My 45 was originally intended to use a 10Y driver stage, but I got cold feed on the idea because those tubes are becoming so incredibly hard to find now.  But...... if you get a good pair you may never need another one.  Tubes with thoriated tungsten filaments last forever.
 
There is also the underrated 46 tube, which can be run in a 45 amp with an adapter at the expense of slightly less power output.  I have a pair and for some reason have never really taken the time to play around with them.  I think the fact that I had no idea how much plate current to put on them was a major factor.  The data sheets are oddly vague on that key data point if memory serves.

 

[Neogeo333]

Then there's the DHT from Europe like the PX4 and PX25.  

 

[parbaked]

  There is also the underrated 46 tube, which can be run in a 45 amp with an adapter at the expense of slightly less power output. 

Jef Larson, who built my 6197 SEP amp, built an amp running the 47 tube.
He said it was his best effort to date:
 

 
You could almost build one from this up-skirt pic:

Spoiler: Warning: Spoiler!

 

 

[Neogeo333]

  Jef Larson, who built my 6197 SEP amp, built an amp running the 47 tube.
He said it was his best effort to date:
 

 
You could almost build one from this up-skirt pic:

Spoiler: Warning: Spoiler!

 

If one know how to properly solder, it looks more simple than a Bottlehead kit.  

 

[daigo]

Point to point soldering always makes me nervous.  Really need to be organized for that type of circuit building.  

 

[Xcalibur255]

 
Here are the globes.  Pic is terrible but best I can do.  The bias issue from yesterday must have been a fluke, they are very stable and don't seem to be drifting from each other, hard to find in tubes this old.  I think I scored a very nice pair of globes here.

 

[rosgr63]

Great looking amp Tyrell

 

[MoatsArt]

.

 

[whirlwind]

I am very close to being done reading this whole thread 

 
I am like on page 696.
 
I can say that great food and great amps, sure do not lack in this thread and it has been so cool to watch Glenn's creations appear in chronological order.
 
I have learned quite a lot about tubes also, which many people in this thread know about....especially Starvos and Glenn.
 
When I see the under side along with the top side of one of Glenn's new creations, they just speak of quality through and through.
 
I am going to be so proud to own one of these creations.....and I am sure that I will have many questions about some tubes in the not so distant future.