The Reference 6J5 Thread (L63, 6C5, 12J5, 6P5, etc.)
Apr 23, 2022 at 10:41 AM Post #2,102 of 2,486

OldSkool

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Good thing for burn-in. The NOS GEC L63 upper treble is starting to mellow at 20 hours. Treble is now down to 6J5G Visseaux territory but with more detail. Nice!
 
Apr 23, 2022 at 10:29 PM Post #2,103 of 2,486

jonathan c

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Good thing for burn-in. The NOS GEC L63 upper treble is starting to mellow at 20 hours. Treble is now down to 6J5G Visseaux territory but with more detail. Nice!
I really enjoy the double GEC L63 via @Deyan adapter on the Schiit Lyr 3. I will not be returning to 6SN7s for Lyr.
 
Apr 23, 2022 at 10:42 PM Post #2,104 of 2,486

Slade01

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I really enjoy the double GEC L63 via @Deyan adapter on the Schiit Lyr 3. I will not be returning to 6SN7s for Lyr.
This! Dual Single Triodes trump nearly 99% of 6SN7s any day of the week. I'll stand by that pepsi challenge.
 
Apr 23, 2022 at 11:03 PM Post #2,105 of 2,486

bcowen

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I really enjoy the double GEC L63 via @Deyan adapter on the Schiit Lyr 3. I will not be returning to 6SN7s for Lyr.
They sound pretty good n the Incubus too. :laughing:

6080WB Chatham and L63 GEC.jpg
 
May 2, 2022 at 8:59 PM Post #2,107 of 2,486

jonathan c

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May 2, 2022 at 9:23 PM Post #2,108 of 2,486

bcowen

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May 2, 2022 at 9:26 PM Post #2,110 of 2,486

jonathan c

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LOL! We may have to reclassify my Incubus as a 90-degree amp. :laughing:
Make it seem sophisticated…call the Incubus ‘orthogonal’…🤔☑️
 
May 2, 2022 at 9:29 PM Post #2,111 of 2,486

jonathan c

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LOL! We may have to reclassify my Incubus as a 90-degree amp. :laughing:
Second response: classify it as the world’s only ‘electrically in-phase, structurally half out-phase amp’.
 
May 2, 2022 at 9:30 PM Post #2,112 of 2,486

bcowen

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Make it seem sophisticated…call the Incubus ‘orthogonal’…🤔☑️
Problem is that *my* Incubus is correctly oriented. @Paladin79 just built all the other ones sideways 90-degrees. :laughing:
 
May 2, 2022 at 9:32 PM Post #2,113 of 2,486

jonathan c

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Problem is that *my* Incubus is correctly oriented. @Paladin79 just built all the other ones sideways 90-degrees. :laughing:
…the Copernicus Incubus…? around which all others orbit?…🤣🤣🤪
 
May 3, 2022 at 9:09 AM Post #2,115 of 2,486

les24preludes

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I've been doing a shootout of my 28 6SN7s and the plate/anode construction is basically these:
1. T plates, early 6SN7GT
2. ladder plates, many types
3. angled plates
4. round plates e.g. Brimar

The best sounding ones are the T plates, which are mellow, the angled plates which are a tad brighter but still smooth, and the Brimars. I found the ladder plates a tad edgy and hollow, especially on orchestral strings which were smooth with the T plates in particular.

I'm about to make a rig to try out 6J5 types - I have a couple of 6J5G round plates and several 7193/2C22, all of which are ladder plates. I remember from many years ago that the 7193s sounded pretty good, so I was surprised to see they are ladder plates. Maybe the top caps help.

Anyway, looking to buy a few more 6J5 types so looking for recommendations for smooth and mellow sounding ones, maybe some of the very early ones. Loctal 7A4 possible too. Must have a gain of 20.
 

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