[rayshader]

Hi guys, I am quite sure this isn't a BGRP, has anyone come across this version from the gt series? Any particular info for this variant? Thanks​

 

[bcowen]

Hi guys, I am quite sure this isn't a BGRP, has anyone come across this version from the gt series? Any particular info for this variant? Thanks​

Definitely a BG, just not a RP. The penetrations through the top mica are linear indicating a flat plate versus the U-shape you'd see in the round plate version. I've never heard one with that configuration so can't offer anything helpful from that perspective, sorry.

 

[rayshader]

Definitely a BG, just not a RP. The penetrations through the top mica are linear indicating a flat plate versus the U-shape you'd see in the round plate version. I've never heard one with that configuration so can't offer anything helpful from that perspective, sorry.

Wow, what keen eyes you have! Yes its a flat plate configuration indeed. I found no information on this particular variant either, sonically I like it better than the mouse ears. Thanks for your input.

 

[Paladin79]

Wow, what keen eyes you have! Yes its a flat plate configuration indeed. I found no information on this particular variant either, sonically I like it better than the mouse ears. Thanks for your input.

Often if you use a high intensity light you can see the inside. I have heard those in both the black and clear glass. They are decent tubes but nothing memorable.
This should be the round plate version, it is also a GT. I loaned it out with one of my amps but should get it back one day. The recipient thought more of the Melz 1578 I sent and kept that as I recall.

 

[attmci]

Often if you use a high intensity light you can see the inside. I have heard those in both the black and clear glass. They are decent tubes but nothing memorable.
This should be the round plate version, it is also a GT. I loaned it out with one of my amps but should get it back one day. The recipient thought more of the Melz 1578 I sent and kept that as I recall.

These are very decent reference 6SN7GT.

 

[Paladin79]

These are very decent reference 6SN7GT.

They are certainly a good tube. As I recall they probably made the top twenty in some testing friends and I are working on.

 

[rayshader]

Often if you use a high intensity light you can see the inside. I have heard those in both the black and clear glass. They are decent tubes but nothing memorable.
This should be the round plate version, it is also a GT. I loaned it out with one of my amps but should get it back one day. The recipient thought more of the Melz 1578 I sent and kept that as I recall.

I know full well what a bgrp is, I had a peek into the formation the day i received the tube too. In my limited journey I have not come across any flat plate variants from TS Gt series and staggered for the matter thus asked. To reply to a dialogue between me and another with a description "decent tubes but nothing memorable", serves little to the question asked if the comparison is against the Melz 1578 costing much more. I am sure Melz 1578 outperforms many. Thanks for your input anyway.

 

[Paladin79]

I know full well what a bgrp is, I had a peek into the formation the day i received the tube too. In my limited journey I have not come across any flat plate variants from TS Gt series and staggered for the matter thus asked. To reply to a dialogue between me and another with a description "decent tubes but nothing memorable", serves little to the question asked if the comparison is against the Melz 1578 costing much more. I am sure Melz 1578 outperforms many. Thanks for your input anyway.

I responded directly to the narrative when I said I had heard both the black glass and clear glass. Not being memorable means they did not cause a lasting impression one way or the other. I would be hard pressed to think of any Tung Sol I disliked.

I also stated I had not received one of my round plate black glass back yet. I sent a friend several tubes and she chose to keep a 1578, that was a statement of fact not a comparison. The bgrp is worth more.

 

[attmci]

The NIB TS black glass round plate 6SN7GT are very rare and cost over $200 a couple of years ago. It pairs very well with the 421 or 5998. Strongly suggest your tube lovers to give it a try.

 

[Paladin79]

The NIB TS black glass round plate 6SN7GT are very rare and cost over $200 a couple of years ago. It pairs very well with the 421 or 5998. Strongly suggest your tube lovers to give it a try.

I have several of two types of bgrp and those are fine combinations, we use a matched quad of Tung Sol 5998’s in the four amps I designed for 6SN7 equivalent testing. WE 421’s are less easy to find in matched quads, for me anyway.

 

[Renexx]

https://www.ebay.com/itm/164508236603?hash=item264d747b3b:g:MIMAAOSw5epfrUjS

is this a real GEC 6080? the sticker is different. maybe some kind of military version of it?

 

[Slade01]

https://www.ebay.com/itm/164508236603?hash=item264d747b3b:g:MIMAAOSw5epfrUjS

is this a real GEC 6080? the sticker is different. maybe some kind of military version of it?

Regarding the sticker - it looks like a Marconi Sticker (newer looking version) so yes it looks like a real GEC. Construction (though harder to see) looks like it is GEC. The KB/Z code is indicative of the Hammersmith M-OV factory. I posted an example of the older logo below. But yeah - GEC/Marconi-Osram Valves - same umbrella. M.W.T sticker is of the old Marconi Wireless Telegraph company.

For further confirmation, you might want to try asking the 6AS7G Tube Rollers Forum they might have more information as well.

 

[jonathan c]

Caviar for the Linear Tube Audio MZ3…(runs on 12AT7 and 6SN7/12SN7…)

 

[Paladin79]

Caviar for the Linear Tube Audio MZ3…(runs on 12AT7 and 6SN7/12SN7…)

A great year and NOS! Those tubes are getting more and more expensive, I looked at some this morning and the prices often push $150 or they are slightly used.
Certain models of that tube finished towards the tops in my groups preliminary tube tests after going through eight people, they just have few weaknesses if any. Some prefer more of a booming bass but I have always preferred the tightness and recovery on the Melz. Mids and upper end to die for, Focal Utopias are not held back with those tubes, IMHO.

 

[jonathan c]

A great year and NOS! Those tubes are getting more and more expensive, I looked at some this morning and the prices often push $150 or they are slightly used.
Certain models of that tube finished towards the tops in my groups preliminary tube tests after going through eight people, they just have few weaknesses if any. Some prefer more of a booming bass but I have always preferred the tightness and recovery on the Melz. Mids and upper end to die for, Focal Utopias are not held back with those tubes, IMHO.

I’m looking forward to putting these in the LTA MZ3. Even with the 1959 vintage of these, I find the transition from “analytical” listening to “involvement” listening so easy…