[grokit]

What about the RCA's, how do they fit into this overview?
 

 
For instance, is the RCA 6AS7G interchangeable with...
 

 
...the RCA 6AS7G A?

 

[hodgjy]

They are the same plate construction and have the same electrical ratings. Theoretically, they should sound the same. Some users claim to hear differences. If this is the result of manufacturing differences, glass bottle shape synergy, or expectation bias, I cannot say. Although, I can clearly hear a difference between an RCA 6080 and an RCA 6AS7G.

What about the RCA's, how do they fit into this overview?



For instance, is the RCA 6AS7G interchangeable with...



...the RCA 6AS7G A?

 

[Skylab]

The RCA '6AS7GA" in that pciture is quite obviously a 6080...weird that they labeled it such...

 

[grokit]

Thanks guys. Any comments on how they sound?

 

[dannie01]

Found some GEC 6AS7s on eBay, see HERE if anyone is interested. 

 

[Ultrainferno]

Quote:

Found some GEC 6AS7s on eBay, see HERE if anyone is interested. 

 
I paid 14£ for 1 NOS GEC 6AS7G, these are going for +125£. Crazy

 

[dannie01]

Quote:

 
I paid 14£ for 1 NOS GEC 6AS7G, these are going for +125£. Crazy

 

 I bought a pair about 2 years back for the WA22 and cost even higher, ridiculous. 

 

[rosgr63]

Some sellers quote crazy prices.

 

[telecaster]

For the tube roller, some photo of 6AS7G/6080:
 
GE JAN 6AS7G. Impressive tube, good all around. Nice bass, nice treble, excellent mids.

 
The missile Bendix JAN CEA 6080 WB, very nice sounding, dynamic and big soundstage. Excellent definition.

 
The GEC 6080 CV2984, rare bird. Best refinement in sound, my prefered tube. Good bass, good definition, incredible imaging.

 
The RCA 6AS7G from the fifties aka the black plate. Excellent bass.

 
black plates GE 6AS7G copper rod and non copper rod: Excellent like the RCA BP if not a slight better bass definition than the RCA. It would be hard to differenciate them but I give a slight preference to the copper rod.

 

[Skylab]

The Bendix doesn't get talked about much, it's a rare bird, great tube. Unusual plate structure more like a 6336.

 

[grokit]

 
I've got a pair of these RCA's incoming, but the lettering is different.

 

[grokit]

Quote:

 
The GEC 6080 CV2984, rare bird. Best refinement in sound, my prefered tube. Good bass, good definition, incredible imaging.

 
I would really like to try these, how do they compare to the globe style, any differences?

 

[rosgr63]

Quote:

The Bendix doesn't get talked about much, it's a rare bird, great tube. Unusual plate structure more like a 6336.

Indeed.
So far I have identified 4 different types of structures in my Bendix collection.

 

[john57]

Quote:

Indeed.
So far I have identified 4 different types of structures in my Bendix collection.

I was aware of just two types. Solid and slotted plates. First time I heard of two more.

 

[rosgr63]

1. Triangular type plates with Copper Posts
2. Plates with a Hole and Copper Posts
3. Plates with a Hole and Steel Posts
4. Rectangular type plates with Steel Posts.
 
I think the coolers on top may also be different.
I'll have to check my tubes.