12au7(5418) Tube Roll: Mullard vs. CBS vs. Westinghouse

CBS-Westinghouse-Mullard tues

The matched quad of the Mullard CV491 Long Plates cost me a small fortune. They sound great and were the seated “incumbents” in my reference system.  It was time to stop enjoying for a second and get into some serious listening with two other great tubes: the CBS-Hytron 5814 and Westinghouse 12au7 Carbon Plates.

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