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In Reply to: RE: AT7 tube recommended posted by sony6060 on August 20, 2023 at 03:36:15:
NOS because there is no current mfgr. More robust cathode than T7 but otherwise same characteristics. Mac used them as the cathode follower drivers in original MC275 / MC75.
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Follow Ups
- NOS 12AZ7 is also a decent choice - Steve O 05:11:28 08/20/23 (0)