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In Reply to: 12BZ7 vs 12AX7 vs 12AU7 : AES/Cary SixPac amps posted by AbeCollins on July 7, 2008 at 14:25:41:
Abe,
The 12BZ7 isn't too hard to find as yet - you had one suggestion from another poster, I have some, and I'm sure others do too.
What is hard to find is a non-microphonic one. Those large plates tend to be microphonic, no question about it. I reject about 25% for microphonics issues.
The low plate resistance and high mu of the 12BZ7 really makes it kind of unique, I'd get a few for spares as they aren't expensive, and I'd use them instead of the subs for as long as I could.
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Follow Ups
- RE: 12BZ7 vs 12AX7 vs 12AU7 : AES/Cary SixPac amps - Jim McShane 07/7/0816:14:28 07/7/08 (0)