Just replaced my generic big bottle 6SN7 driver tubes. Right away worth the money. Better tone more air more musical. Not bright at all! No break in needed but I am sure things will only get better.
Interesting. I was going to get them but there is another thread on these indicating some issues the tubes develop after a period. If you have a need for 12AX7, they have a BT version which is excellent at Grant Fidelity.
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