[gibosi]

   

 
Looking at the box it actually says right on it, "Manufactured by Canadian Radio Manufacturing Corporation Limited..." which appears to be Rogers itself.
 
http://en.wikipedia.org/wiki/Rogers_Vacuum_Tube_Company
 
I had no idea they made their own tubes.

 
RCA commonly licensed technology to Rogers and others, so it is certainly possible that this is an RCA-designed tube manufactured in Canada by Rogers. If so, being manufactured in a different factory, it may well sound somewhat different than a "genuine" RCA.

 

[Badas]

Just took this pic for reference. From left to right Chatham, Tung-Sol, Sylvania, Raytheon and RCA.

The Chatham is very different from the rest. Different construction on the bottom. It has very, very light grey colour plates. I also a set of 6080 Chathams with the same colour plates.
Tung-Sol is also different from the RCA type. Shorter bottle (hard to tell in pic) and whole tube assembly is lower down.
Tung-Sol and Sylvania have grey plates
Raytheon and RCA have black plates.
I have Raytheon and RCA with and without chrome tops.
Sylvania, Raytheon and RCA look identical in internal construction and bottle size.

 

[Skylab]

I have a number of tubes made by Rogers in Canada. Nice tubes.

 

[Badas]

I threw in the Chahams in late last night for a listening session. Damn these are nice. Smooth with really great bass impact. Best I have heard.

Just out of interest I have thrown in a set of Bendix/Chathams 6080WB's in this morning. Just to listen to a set that doesn't use the coke bottle shape ( test tube shape). These are supose to be great. Graphite plates etc.
Well. Not impressed. Bass has gone on holiday. Very boring. The Chathams were way better.
I will give my Tung-Sol 7236's a shot next. Also test tube shape. They have heaps more power than all of my other tubes. I have noticed that previously.

 

[hypnos1]

I threw in the Chahams in late last night for a listening session. Damn these are nice. Smooth with really great bass impact. Best I have heard.

Just out of interest I have thrown in a set of Bendix/Chathams 6080WB's in this morning. Just to listen to a set that doesn't use the coke bottle shape ( test tube shape). These are supose to be great. Graphite plates etc.
Well. Not impressed. Bass has gone on holiday. Very boring. The Chathams were way better.
I will give my Tung-Sol 7236's a shot next. Also test tube shape. They have heaps more power than all of my other tubes. I have noticed that previously.

 
Hi Badas.
 
Those Chathams sure are very nice tubes...in my new Feliks-Audio Elise, the difference between these (driven by a pair of 'chrome dome' 7N7s) and my GEC CV2523s doesn't actually justify the cost of the latter...unless one has managed to get some before the madness set in!... But if money's no object, go for the GECs!!

 

[tropicana]

Hi, I was offered a Raytheon branded Bendix 6080. Can anyone verify?
I have only heard of Chatham and Tung sol rebrands.

 

[JamieMcC]

Yes their are Raytheon branded Bendix 6080 with graphite plates but you don't see them very often I have only seen the solid column type.

 

[GrindingThud]

The Raytheon Bendix I've seen are like theses in this list and have dimpled plates vs graphite. There may also be graphite variants, although I've never seen one.
http://the-key.enix.org/~krystal/review-tube-bottlehead.html

 

[Badas]

These look interesting:
 
http://www.ebay.com/itm/pair-Cetron-JAN-6528A-6080-6AS7G-tubes-unused-/251793793543?pt=UK_Sound_Vision_Valves_Vacuum_Tubes&hash=item3aa0146207
 
Can they really be used in a 6AS7G / 6080 circuit?

 

[Skylab]

These look interesting:

http://www.ebay.com/itm/pair-Cetron-JAN-6528A-6080-6AS7G-tubes-unused-/251793793543?pt=UK_Sound_Vision_Valves_Vacuum_Tubes&hash=item3aa0146207

Can they really be used in a 6AS7G / 6080 circuit?

Almost universally NO. They will fry most power transformers in amps that use the 6AS7G. And on top of that, I had an amp that could use them, but they sounded horrid. Any 6ASG will sound better.

 

[Badas]

Almost universally NO. They will fry most power transformers in amps that use the 6AS7G. And on top of that, I had an amp that could use them, but they sounded horrid. Any 6ASG will sound better.

Thanks heaps. Out of my ebay wishlist.

 

[Badas]

Skylab,
 
I was reading your post here from 5 years ago.
 
http://www.audioasylum.com/audio/tubes/messages/22/220349.html
 
Very interesting. Great information.
 
Has your opinions changed much?

 

[Skylab]

No, haven't really changed my opinion from there. I have since then been able to get 2399's which I also really liked, although it wasn't obvious to me that they were any different from 5998's. Looked identical.

 

[Badas]

No, haven't really changed my opinion from there. I have since then been able to get 2399's which I also really liked, although it wasn't obvious to me that they were any different from 5998's. Looked identical.

The 5998 has been on my wishlist now for 6 months.
 
Do you know a good supplier? Ebay prices are crazy.
 
Others have also compared the 7236 to the 5998. Would you agree?
 
I have the 7236 and I like. But they don't blow me away.

 

[Nic Rhodes]

6528 are monster that need 5a on the heaters, avoid unless you know what you are doing.