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CV4024s

And, I've got CV4024s in my VTL ST-85 driving EL-34s. When I first dropped them in, they sounded like the worst 12AT7 I'd ever heard: congested, shrill but dull, all jumbled together...I felt a twinge of vertigo just listening to them, almost as if I were spinning or something. Very disconcerting.

I let them break in, and after about 20 hours, I listened again. Holy Cow...now they sounded absolutely wonderful! Deep and clear, with a lot of bass and weight. I've never heard such a dramatic break-in difference.

Such a strange experience.

Personally, I feel that it is difficult to "characterize" the sound of a driver tube. They are *SO* dependent on the driver circuit, amount of feedback, operating point, etc. A particular 12AT7 that sounds "open and airy" in one circuit could sound "dull and tubey" in another.

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