Not a silver bullet for great preamplifier sound. In my Audible Illusions preamp, the switch from 6DJ8 Bugle Boys to the Matsushita brought the SQ down. These appear to be very well made tubes, but not for my AI pre, perhaps others?
Verified purchase: Yes | Condition: New
Very good tube. One of the best
Verified purchase: Yes | Condition: New
Verified purchase: Yes | Condition: New
Sounds Great
Verified purchase: Yes | Condition: New
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