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12AX7 tube alternatives for Jolida JD-100

After using Mullard, Telefunken and Amperex 12AX7s, I've substituted 5751 command series blackplate, 12AU7WA, GE5814 and 6414 Raytheon blackplate, a 12AT7 variant.

I thought the 5751 was nice with lower gain and warmth, but still had grain that smears sound.

The AU7 and its variant was too sterile.

I'm impressed with the 6414. Focused sound, holographic, good bottom to top presentation without being too edgy.

Anyone else tried something like this?
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Showing 3 responses by abucktwoeighty

abucktwoeighty's avatar
abucktwoeighty
1,079 posts
 
I tried the Sylvania 5751 triple mica black plate and loved the richness, but not the heavy bottom end. Went back to the Svetlana 12ax7's until someone posted something about the Chinese Full Music 12ax7's. I bought a pair for around 70 dollars, and found they were very comparable to the Sylvanias, but balanced across the board in my system. Sold the Sylvanias, love the Full Music!
abucktwoeighty's avatar
abucktwoeighty
1,079 posts
 
Look on ebay for the Full Music 12ax7's. I got mine there for $69.99 plus $5 for registered mail shipping from Hong Kong. Gold pin new in box.
abucktwoeighty's avatar
abucktwoeighty
1,079 posts
 
I think you'll like these. The Svetlanas I was using lacked good bottom end, so I put down some serious money for the Sylvanias, which really improved pretty much everything. But they brought along some serious bottom end, a little too much for my liking, so I went back to the Svetlanas. I read a post here on A'gon about the TJ Full Musics, and did what you did. I feel they are just as good as the Sylvanias, if not better. They are balanced from top to bottom and sound great! If I remember correctly, they didn't take a real long time to break in. Keep us posted.
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