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Octals-med mu, low plate R

Posted by deafbykhorns on January 2, 2017 at 18:13:30:
Well, I moved from the 76 driver looking for a med mu driver for the 300b-GM70
5687 didn't have enough gain, sounded ok but nothing like the 76
7788 oscillates like crazy (probably long alligator clip leads) sounded thin
6e5p with CCS so far has been the best, gain is perfect, low distortion and very neutral

Downside is my amp is drilled for octal, I do have an adapter but curious if anyone knows of an octal with similar characteristics of the 6E5P (low plate R, mu >30)